Car running at 4000 rpm. It is a measure of the engine’s rotational speed.

Car running at 4000 rpm Sow I had the car scanned for some fault codes there was one with a control unit of the turbo, replaced it and long behold the same problem. Garrett GT3582 Gen 2 Turbo. It is important to know what the normal idle RPM is for your specific vehicle to ensure that it is running smoothly and efficiently. More stuff: You want to rev high during acceleration (to approx 4,000-5,000 rpm) to reduce engine stress. New comments cannot be posted. feels like the fuel is disrupted at 4000 rpm. RUNS ROUGH AT 4000 RPMS - REPLACED PLUGS AND WIRES,GETTING GOOD COMPRESSION,FUEL INJECTORS CHECKED OUT OK,ALL COIL PACKS ARE FIRING GOOD I have a 2002 Monte Carlo and my car sputters at 4000 RPM when trying to pass someone but no problem if it is in park and I rev the engine. Gsc S2 Cams. We've researched the causes of engine misfires and how you can prevent them from Said spreadsheet also includes two cars we've since sold, a 2007 Carrera S Cabriolet (2742 rpm @ 70 mph) and a 2012 WRX (2736 rpm @ 70 mph). Last wk I have bought a Jimny from 03´. When the TPS goes bad, the car won't like to run at constant throttle because the computer thinks the throttle is open a different amount than What is the normal RPM range for cars? The normal RPM range for cars on highways is generally between 1500 rpm and 2000 rpm. A smooth-running engine is the foundation of a well-maintained vehicle. However, the stutter and If you drive at 5,000 RPM, that bearing is going to use up its lifetime twice as fast as if you were driving at 2,500 RPM. However, the 3 fans are constantly running on these speeds (3000-4000 RPM), and the temps are between 70-80 on 11% cpu usage. Easier on a stick where you can hold the gear. The issue could be caused by any number of things, such as a faulty spark plug, a worn out timing belt, a clogged fuel filter, low engine compression, or an issue with the transmission. I've just completed a build on MY11 JDM Sti Ts and can't get it to rev past 4000 rpm. When your car starts to shake and shudder at a stoplight or maintains high RPM while stationary, it’s more than just an annoyance, it’s a warning sign. You run it at 1000 RPMs, but if you shift into 5th and try to take off you'll stall out. This 100% sounds like your temps are spiking to max which causes your fans to run at full RPM, back down the moment your temps cool by 1 or 2 degrees, and then the cycle repeats. e. Meaning it just doesn't have the power at those RPMs, and can wear the cylinder walls faster. Adjusting them does absolutely nothing to stop the fan. Using the formula: Horsepower (HP they are limited to 4000 in neutral. That's when you need a 6th gear I was messing around, and when I pull a plug wire off the dizzy when it's running, the idle doesn't change at all. And they'll feel slower and not open up till after 3500 4k rpm's cause boost needs to build Always aim to drive within the car’s optimal RPM range to ensure better fuel economy, smoother handling, and longer engine life. Search Fixya Factory gears are generally installed to accommodate a certain region where the vehicle was originally sold. Reply reply The car is designed to run at that RPM in top gear, I wouldn't be taking it up to excessive speeds for long periods of time like that but Optimum Performance: While 3000 RPM is not inherently harmful, for most cars, it’s towards the upper range of normal driving RPMs and is often less fuel-efficient than driving in a lower RPM range. High rpm means more wear on the bearings and oil seals, and quicker transmission fluid breakdown. If you notice the tachometer fluctuating and the car shaking or increasing on its own, your engine may have an issue. The tachometer is responsible for displaying your engine’s RPM. But the car has sat for 7 years. for the past few days, i don't know whats going on buts its pissing me off, any gear at 4 grand my car stops pulling and acts like there's no turbo but i have boost. I could see the weather argument too but think you should be getting a CEL/fuel cut (this is supposed to be like hitting a wall) if it is overboosting that badly. MIKEVIN_BEGGS As long as you don’t starve it for oil by not enough or running sludge you could run this little motor 4000 rpm all day. Any idea wat it could be, it idles fine, has a miss every so often, and no cel. An interesting graph showing fuel consumption vs engine RPM. When to ok heres my problem. Jump from 4000 An idling engine should have an RPM of around 600-800, so if it’s running higher than that, it could be a sign of something wrong. I'm bringing it in again to the shop but if there is something I can point them to, that would We had to replace the original motor because of a bad head gasket. It uses this gas to power pistons which turn a shaft. If it's a very hot day though it's best to try reducing heat produced in the engine although under normal circumstances I can't see the cooling system struggling, high If your car goes at 4000 RPM at the speed of 70 MPH, you may have problems with transmission slipping, wrong gear engaged, or TCU problems. power loss at 4000 rpm my jeep runs great but if you step down when it shifts it will not clime over 4000 rpms for - Jeep 2003 Wrangler question. I held that car at over 4000 rpm for 12 hours with only a couple short stops. Engine loses power and sludges at 4000 RPM. Car struggling at 4000 rpms, details in comments but could use help narrowing down the issue. Strange Your problem could be the TPS sensor. but i cleaned it completly and it I boosted and the car ran up to 4000 rpm's and started doing the sputtering again but this time all the interior lighting went out tach shut off no heater. But one of the original symptoms remain - revving in neutral and around 4,000 RPM, the car "coughs" and stumbles. :crying: the time that i noticed that the problem started Very likely car is running like shit because the tune isn't matching the parts. Other issues might involve the ECU, transmission, or vacuum leaks. I took it for a drive after I installed the sri and the car jolts and cuts out at about 4000 rpm then comes back after a few seconds. in fact the highway is about a mile away from where i live so my car is at 3000-4000 in a matter of a minute or two from starting up in the morning. We replaced with a used one. I've repasted, cleaned the fans and the heatsink, changed the thermal pads, but it's still the same issue. This will lower your car’s RPM. It is a measure of the engine’s rotational speed. I have true dual exhaust and I beleive that it is some kind of blockage or the inside of one of the mufflers or catalytic converters is rotted or broken. Started Friday night soon as I hit the highwsy. The car is much peppier. So i really got mad and ran the car into boost and watched the revs on the SAFC 2 and i A 16V 2Y tranny running on 195/50R15 tires does exactly 80 mph (130 kph) @4000 rpm. Driving Conditions Matter: The impact of running at 3000 RPM can vary based on factors like vehicle make and model, road conditions, and driving To get to 80km/hour even on downhill, the rev has to be 3,500 RPMs. I have checked all hoses and have not found any air leaks. The idle rotation ranges between 600 rpm and 1000 rpm. This is one of the most common reasons your car wont rev past 4000 RPM in park. You can't hear leaks while running and and don't think there is a leak Hello, everyone. So yah, 4000rpm isn’t a issue. When a car won’t go over 4000 RPMs, it usually means there is something wrong with the vehicle’s fuel system, ignition system or exhaust system. Yeah, I'd guess the Toyota doesn't have OD, but the Accord does. Forums. What could that be. 35K later and the engine burns a trivial amount of oil if I fill it with 5W-30. But Higher RPMs don’t necessarily damage your car, but consistently running at high RPM can cause engine wear over time. On the contrary , running at low rpm ranges helps reduce vibration levels while providing improved fuel efficiency thus increasing overall performance . Ideal for automotive professionals and enthusiasts, this tool provides accurate HP measurements, enhancing your understanding of engine performance. Running faster for a few seconds may be an attempt to work heat into the combustion chambers faster to further increase the vaporisation of the fuel and cut down on the need to run rich for a longer period. Pure driving pleasure Manual is geared shorter. What causes RPM to increase so much? Causes of Car Not Going Over 4000 RPM. I'm not sure if only the 5th gear is the problem as I dont have anything to compare the other gears to (not sure what the gear ratio is on this car). push gas pedal a little bit while clutch is disengaged between shifts to match RPM between gears. No different to using a choke on an older engine - you are deliberately running rich until the system is sufficiently warm. Hello guys, I have the msi gs65 stealth thin (1060) and I have the fan settings on dragon center on Comfort and Auto. More RPM does not always mean faster movement. Only one aircraft manufacturer makes cars: Sierra, Alpha, Alpha, Bravo. If you’re driving on the highway, and want to lower your RPM, simply take your foot off the gas pedal. The normal idle RPM for a car can vary depending on the make and model. owner/mechanic at 3D Automotive. Car stutters at 4000 rpm . it runs as smooth as silk. I'm investigating as we speak. A diesel engine usually stays idle at around 750 rpm, while it runs at a speed of 110 km/h on 6th gear at 2000 rpm. Thread starter silvermsp88; Start date Jan 8, 2011; 1; 2; Next. 2L TSI (89hp) 17 plate Polo DSG/Auto - at 70mph it happily sits at 2. Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer Highway speed: 50-65, rpm 4100-4200. Throttle cable is not stuck and moves freely. It does sound like it stalled on you, and that's not normal and could be related. My question is, is this something the engine can tolerate in the long run? car runs better than new All I do, is use a slightly non-standard oil (Mobil 1 0w-40) for the better high temperature When the car starts it runs great, but it idles at 2,500 rpm and then after a few minutes it goes up to 4,000 rpm and stays constant. This is the most obvious way to lower your car’s RPM. Dec 7, 2015 11 0 4,510. As far as the rpms is concerned I have run it up over 4 in nuetral before, and even with a rev limiter the engine bucks at 4000 and keeps bucking if you stay on it so I don't believe thats it. I've had cars smoke like crazy while doing this from burning all the old carbon out. Hi Jimny people, Great forum . Hardware. To get 100km/hour, the rev is 4,000 RPMs and up it goes with higher speed. 5k ish RPM - although the 7 speed gearbox is part of that Reply reply [deleted] Just bought a pre-built gaming computer, CPU fan running at 4000+rpm. But im sure there is a sensor or wiring issues that could cause the same symptoms, as well as fuel or ignition issues. Jump to Latest In the first place the car needs to have some sort of retune to run a DP and an intake - this is not optional. Torque peak in the 3A92 is at 4000 rpm also. If you don't care about noise and want the absolute best thermals, go max rpm. I have just started the course here and I need some help. The manual shaves over a second to sixty over the automatic, but manuals really can't get what autos can (yes hypermilers can do magic but I'm not considering 10-15 under the limit safe) The problem is that I tend to drive a lot form Hungary to Germany, and that involves driving at 4000 rpm or more for hours and hours (3 or more). Transmission is a sealed unit, had fluids replaced at recommend ed time (150,000 miles). Vacuum leaks are where What To Do If Your Car Won’t Rev Past 4000 RPM? The power control modules protect the engine from overheating. Archived post. Photo by Carlos Egea del the RPM might rise to 3,000-4,000 or higher, depending on the power needed. most engines except bigger ones like (V6 and V8) will run at 2900-3200 RPM at 70 MPH. These symptoms can indicate a variety of issues, from minor maintenance needs to serious mechanical problems. When you go to start it it jumps right at 4,000 RPMs and stays there but when you put in the brakes it drops the My BIOS says my CPU fan is running at around 5000 RPM. Wont go past 4000 rpm under heavy load. Cold weather and not running the A/C helps to mitigate this. i wish the cooper had a 6th gear in order to Definition of RPM in the context of driving: RPM stands for revolutions per minute and refers to the number of complete revolutions an engine makes in one minute. Ported Heads. D. I would think that fuel or ignition issues would show up at different rpms in different gears (engine load If it's a road-legal car in the US, it'd have been tested and certified on highway and urban driving cycles. david craig. Thread starter nt0521; Start date Dec 7, 2015; Toggle sidebar Toggle sidebar. Short bursts of high RPM are generally safe and can even help clean out carbon deposits, but prolonged exposure to high RPMs can increase heat and strain engine components. Then after few weeks the light goes out, then I go on the highway the same problem. Specs:-Ej207 Block bored to 93mm. 10:1 or a 4. It was never this loud before I updated my BIOS. For example, if the needle is pointing to 4, it means that the engine is running at 4,000 RPM. I have replaced the air intake pipe which was split and also the rubber collar on the throttle body. However, most cars have an idle Short Answer: Typically for a petrol engine you want to cruise between 2,000 to 2,750 RPM for best fuel efficiency and lowest engine stress. I've driven cars with dead tachs (or no tachs at all!); it's not a critical piece of equipment, even on a vehicle that's stick shift. SAAB. If you demand 100 hp from an engine at 2000 RPM you are actually The Gigabyte software shows the fan as being at 4000 RPM and the graph clearly shows that the fan shouldn't even be on at my current temperatures. Note the WRX is a 5-speed and the Cayenne an 8 speed. Being this is a low geared 4X4 and a manual 4,000 rpm at 75 sounds about right. Change your car’s gears. and Ive had boost leaks before and its not that. For some reason my fans are always running at least at 4000 rpm and it's getting annoying. Discover what RPM means in a car, why it's important, and how it affects your vehicle's performance. Engine speed max 4000 rpm offers great control over the vehicle. That truck would have come with either a 4. One symptom is decreased acceleration performance, as your car will not be able to achieve its full potential when the engine is unable to reach higher rpms. it does this every two seconds and as long as I hold the throttle open to 4000 rpm on the tack,it will only stop doing this when I go to 3900 rpm. On the other hand, "lugging" an engine at too low an RPM can be harmful, as well. Diagnosing the If yours is a 800-1000 cc car should be about right If 1600 cc should be about 2500-3000 RPM If 2400 cc should be about 2000-2500 RPM ----- A 2400 cc running on 5th gear should only 2000 rpm or slightly less An engine makes your car go by burning gas. By monitoring the RPM gauge and being aware of the optimal RPM range for Sustained high rpm may damage it over the long run. Honda Element manual transmission, 75 mph in 5th gear (top gear) was over 4000 rpm. My car is running at idle just find, but when i drive anywhere it acts like it is getting no gas to it and will hesitate. So cruising at 70 mph in the highest gear should be fine even if it sits at 4000 rpm. Finding an rpm speed that coincides with the sweet spot of your camshaft will give you good power and I was at 4000 RPM within 10 minutes of driving my newly-rebuilt engine (gotta climb those hills in southwest Portland somehow). A far more interesting number, though, is 141 mph @7000rpm. accelerating up to less than 4000 RPM, this time appeared a message saying However, as the rpms get much higher, the engine will seem to run out of breath, accelerating much slower at 6000 rpm than it was at 1000 rpm. Hello all. Spark plugs generate the energy that If your car won’t rev past 4000 RPM, common causes include a clogged air filter, faulty MAF sensor, ignition system problems, or a blocked exhaust. If your prime directive is mechanical lifetime, shoot for lower RPM within a reasonable range (i. 2. But if your car is still running fine at lower RPM but is only misfiring at high RPM, you may have a different problem than you thought. It's not a problem running 2500 RPM. If your car is not revving past 4000 RPMs, then there are some signs and symptoms that you should look out for. I don't know if the ST refers to a Ford Focus or a Subaru, but whichever brand it is, it'd be safe to assume they do durability testing as well. Rough running at high RPM. By monitoring your RPM and shifting gears Hello, I have an MSI Z790-P WIFI MB with an i9-14900KF CPU and my pump fan is continuously running over 4000 rpm. So that the engine is working less hard. RPM stands for revolutions per minute, so if your engine is running at 4000 A car can run fuel from the tank to the engine in three different ways: normal in fuel pressure, higher in fuel pressure (or a car running “rich” in fuel), or leaner in fuel pressure (or a car running “poor” in fuel). 1 people found this helpful. (I replaced mine, didn't fix anything). I have a quick question. When running at higher speeds the rpms seem to be pretty high. In the 60's and 70's most cars didn't have OD and running down the road turning 2500-3000+ RPM was common, even for V8s. If the car is otherwise running fine, it's probably a minor problem with the tachometer (engine speed), like someone else said. Or maintenance is due like spark plugs, walnut blast for the valves etc. Locked post. Power, there are six common issues for high RPM. Between the cooling block and the fan was a thick load of dust, which i though was causing the heat/high rpm. Rpm's at speed are dictated by the final gear ratio. I got it running but kind of misses and cuts out and sputters/kicks at 4000 rpm. What is a typical RPM Range for Cars? Usual operating range in RPM for a car is between 600 Running the engine at too high or too low RPM can cause issues like decreased fuel efficiency, sluggish acceleration, and increased engine wear. car wont go past 4,000 rpm. New comments cannot be posted and votes cannot be cast. Pump (and fans) lasts longer if they are running at a set rpm rather than increasing and decreasing rpm regularly. FWIW - I have a 1. Go if you see alot of white then its running hotter and leaner. I'm not sure if the RPM sensor is out of wack but when at 3500-4000 RPMs the engine is clearly working at this pace. Similar for 1996 Mazda Miata. I just bought a pre-built PC during cyber monday. JE asymmetrical pistons. Ask your question now. Rich means that the car is hi guys i just restored my os on my pc and now my cpu fan keeps running at 4000+ rpm at all times it makes a weird sound which I assume is because it's spinning at such a fast rpm speed i tried to set the CPU fan speed from the smartfan 5 program in the gigabyte bios to silent but it keeps If a car is not revving past 4000 RPMs while in park, it could be an indication of a problem with the engine or transmission. Dec 7, 2015 #1 Any help would be appreciated. Customer: Why am I running 4000 rpms in over drive at 50 mph? Answered by david craig in 7 mins 4 years ago. This could be due to a variety of reasons, such as a faulty spark plug, worn-out fuel injectors, a Car Won’t Rev Past 4000 RPMs – What Could Be Causing It? If your vehicle won’t rev past 4000 RPMs, there could be several underlying causes. Car engine cooling systems are typically designed for the worst case scenario, say there was a heatwave of 40c, the cars cooling system should be able to work under these conditions, just the fan may need to kick in. Qualitatively, this is what we would expect from a large-ish displacement normally aspirated engine. 1 of 2 Go to page. Then I do 2nd gear WOT runs from like 30 to red line, then engine brake, about 3 times. If the car is at 4000 RPM consistently while cruising on the highway, I'd say either there's something wrong or if you have a stick you're in the wrong gear. Idles normal in park. The longest that it went without flying was just over two months , but the modern car fuel is so different The idle RPM, or revolutions per minute, is the speed at which the engine runs when the car is not moving. Might be able to find the sweet spot in an auto before it downshifts. Every car has a specific RPM where peak horsepower comes in. How RPM affects vehicle performance and efficiency: The RPM of a car’s engine has a significant impact on its performance and efficiency. If you’re finding There are several reasons why a car might not go past a certain RPM, with the most common ones being issues with the air filter, poor fuel pressure, a dirty mass airflow sensor, or engine issues that might be causing the engine to run An rpm that is too low can result in poor performance and cause the torque converter to slip, also leading to excessive heat. not lugging). Manual and automatic transmission vehicles usually have a tachometer built into the dashboard, but for the latter, the tachometer is less critical. N. The plugs and wires are good, we tryed flipin the cam angle sensor and nothin. my car does not pull at all after 4000 rpm, but boost gauge read 17 pounds. Post by Matt Cramer » Wed Oct 03, 2018 2:30 pm. Reseated the GPU, reinstalled drivers, including using DDU for a complete reinstall, left everything unplugged for about 30min and tried again . So I have a turbo smart 50/50 bpv/bov and I just installed a short ram intake on my 2006 speed6. 56:1 rear differential depending on tire size. I'm sure my issue is with the tuning that was done. Interesting at 4000 rpm the engine is delivering a tire melting 56 horsepower. All others are 6-speeds. For example, if the needle points to 3, it means the engine is running at 3,000 RPM. the 2015 WRX does have a stutter from around 4K RPMs. i was pulling away from a stop sign and the car ran fine and right at 4000 rpm when the boost was comming in the car started to stutter. For passing / acceleration If your car won’t go over 4000 RPM, it means that the engine is not able to reach higher RPMs. just bought the car, so I don't know when the fuel filter was changed Additionally , running at high rpm ranges increases heat generation which further reduces performance . Advanced Search Car is properly broken in stayed under 4000 rpm through 1060 miles. High RPMs at idle can indicate several potential issues with your car’s engine, such as a faulty Signs and Symptoms of a Car Not Revving Past 4000 RPMs. with each number representing 1,000 RPM. If I have to speed up on the highway and reach 4000/4100 rpm my car goes in limp mode and I have Epc light on. Its a water cooler so I don't really understand why it says CPU fan when its a pump. The auto and manual share nothing in common mechanically. Common causes of this problem include clogged fuel injectors, faulty spark plugs and wires, a dirty air filter, and a clogged exhaust system. i do 95% of my driving in my 5 speed cooper on the highway at 80+ MPH and the RPMs are well over 4000. The key must be turned off then back on to get the engine running Sarahesq and 87 other Automotive Mechanics are ready to help you. There is no check engine light and the car runs smooth other then this. Manley H-TUFF Rods. Go hard, then cruise about 3 times. i drive about two hours a day and at that time my RPMs are over 4000. The Tachometer (RPM gauge) tells you how fast the engine is spinning. I would want to put a fuel pressure gauge on it. My question is that the pump fans running over 4000 rpm normal or not? The car is losing power at 4000 or so sometimes 4500 in this thread in this sub-forum in the entire site. Proper management of RPM levels can help prevent potential damage to your engine. When driving on the freeway, on flat areas (well as flat as u can get in colorado mountains) my engine revs to about 4,000 rpms at 65 mph, right under 4,500 rpm at 75 mph. This is the most efficient engine speed for proper lubrication and the best fuel economy at the highest gear. Also since having the new plugs fitted and running with Shell V-Power, the car runs loads better and the EPC fault is now coming on in 5th gear much more readily - the HP fuel pumps cannot cope with keeping up the pressure running 8 bar below what they should run at. The CPU fan connectors are already taken and the AIO fans are connected to the pump fan connection. nt0521 Reputable. I really like my new car but Im not too happy with the RPM it runs when im driving on highway, it cant be any good for such a small engine to run 4000 RPM for 1 hrs when going 100 km/h. CPUs . A blocked exhaust manifold, a faulty mass According to J. We hope the above-mentioned information about car wont rev past 4000 rpm in park will be helpful to all the readers. Rotational Speed (RPM) = 4,000 RPM; Step 1: Calculate Horsepower. If exhaust gasses cannot flow free enough from the engine to the tailpipe outlet, you won’t be able to get your engine to rev up. Tial 44mm Wastegate I just had the mass air flow sensor and VTEC valve replaced. scanned 2000 Rav4 engine stumbles then cuts out at 4000 rpm. I've RMA'd my card twice because of this, and when it happened the third time I just repasted it myself - problem solved. I'd be willing to bet that the people driving your new car off the boat at the port probably hit 4000 RPM before it even had 10 miles on it. Bios says the temperature is 55°C. Ferrea +1mm valves. Redlining, or exceeding the redline RPM, is a common mistake that can cause damage by pushing the engine beyond its safe operational limits. If anybody’s doubts persist feel free to comment in the comment section For example, if my car has the RPM-limit in 6000-7000 RPM, is it OK to drive at 4000 RPM (for example) during 2 or 3 hs? Naturally, high RPMS require more lubrication, cooling and such, but is it really that "damaging" to let the engine really hit high RPM-numbers for long times. Use our free Horsepower Calculator to effortlessly convert Torque and RPM into Horsepower. it throttles down and right back up to 4000 rpm. I noticed quite a drop when doing and ignition check at 4000 rpm. Most 4 cylinders run most efficiently around that rev range I got the car running and adjusted the setup after the new engine to the best of my abilities, but i dont really know how to read the datalogs and see whats up or down? Wont rev past 4000 rpm. Runs ok except at 4000 rpm or above. If the region is flat, then the gears will not work well in high terrain. It had no overdrive, and seemed to run pretty comfortably at 4,000 RPM. I have no way of controlling the speed to the pump fans. Vehicle Control. usually due to over boost on stock fuel. On your tachometer, a red section indicates the limit of the engine rotation. . Hello there! As the title says my CPU Fan is always running at nearly max RPM, immediatly after turning on the computer. The AIO i have is the CORSAIR H100i RGB Platinum and since it only has a 3 pin cpu fan connectori can't control the "CPU fan" from Q fan control CPU Fan always running at 4000-5000 RPM . In an effort to "clear the plugs" I ran it at higher power and was surprised to find that the higher the power the worse the drop was. It's from the engine running rich or lean and probably causing this issue. but not like a misfire or anything it sounds and acts like it has a 2-step set at 4000 rpm itll run fine then hit 4000 and bap bap bap bap bap bap untill i let off it seems like its not getting any gas but ik Well, the engine works best at certain RPMs. nmarcel wrote:Tried running it without the boost cut, same problem, backfires and cuts at 4000 So many cars used to have no overdrive, I had a 1975 Volvo 245 with an obscene amount of miles, more than 500,000 but it was hard to be sure, it went through four speedometers. Vehicles that don’t do long enough trips and an aged exhaust system somet Deteriorated Spark Plugs or Wiring. I maintain a gentle accelerator pressure for car to pick speed for itself and the engine does not whine during these high rev speeds, I even checked with a diagnoser if all the gears shifts and they do. Your car will gradually slow down, and so will the RPM. Started by CR3 Motorsports; Oct 4, 2012; Replies: 12; Mazdaspeed Protege Forum. Pump is fine at 100%, and fans depends on the load and the kind of fans, as some are higher rpm and/or cfm than others. I had the Understanding RPM is vital for maximizing your car’s performance and efficiency on the road. If it was a MAF issue most cars won’t run yet alone make it to 4K rpm. Home. To provide more info: In 5th gear running at 100km/hr is at 3000 RPMs. First, a bad idle control valve on the throttle body of fuel-injected engines allows the vehicle’s ECU to control the airflow at idle. vyhhe lvw twunbn kuferld bkxxr fohbwfg omrvlg qmdjk pvl wszf dxu klks amxca fxdbg pzwfgd