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Could be that your motor has a rev limiter. Does it only do it in park or neutral? My grand prix has a rev limiter of 3000 rpms. It seems like the motor starts stuttering like you are hitting the gas an letting of repeatedly. This should only happen in park or neutral though. Could be worth taking a look at though.
What else can I help you with?
What would make a 2000 expedition 5.4 lts engine rpms going up and down when you are stop and sometime the rpms goes between 500 and 1000 rpms?
mass air flow sensor
Why would your RPMs spike for 10secs on and off but the car seem not to shift down or up and the car not accelerate on a 2000 Grand Prix GT?
because the engine needs to have a 20 seconds RPMs
What cause a 2003 Hyundai Sonata to start jerking and the RPMs start revving up and down?
There must be a "check engine" light on. Start with investigating the DTC's (Diagnostic Trouble Codes).
Suggestions my subaru impreza 93 1.8l fwd when its cold you start the engine it starts then the rpms go up then rpms go down and it almost dies then it kicks the rpms back up and runs fine afterwards?
Chances are it is a stuck fuel injector, or possibly a vacuum line leak.
What causes a 1998 Malibu 's engine to rev at 2500 rpms when first started by the way it won't kick down unless you shut it off a start again then the rpms go back to 1000- car seems to start slowly?
Check the engine for proper cylinder compression. If the pressure is low then a blown head gasket could be leaking and causing the problem.
Why does your 92 Camry LE V6 idle high when you first start it up?
If it's cold outside, it's because ECU use ambient temperature sensor and coolant sensor to manage RPMs. After you start the car the coolant temperature is low and ECU sets RPMs very high, when it gets warm RPMs drop down until engine reaches operating temperature.
Why on a 2000 Blazer after 4200 rpms the reb limiter is kicking in?
It will if you are free reving the engine with out it being in gear. If you are driving it hard down the road and it is kicking in then you may need to have the engine scanned with an OBDII engine scanner and make sure you don't have a problem in the system.
2000 ranger 4.0 every time your ac kicks on the rpms go up 300 rpms then goes down the ac turn off why?
because the engine automatically revs up when it encounters the resistance of the ac clutch kicking in so it doesnt die or put un-needed stress on the engine at idle speed
What is it when my car sputters and my rpms go down when making a turn to the right?
check engine mounts
When you start 2000 s-10 rpms go to 3000 then down to 500 back to 3000 then 500 and so on is this a throttle pos sensproblem?
check for a vacuum leak on the throttle body
Why do the RPMs go up when slowing down?
When you slow down in a vehicle without stepping on the brakes, the RPMs typically increase because the engine needs to work harder to maintain a consistent speed. This is due to the transmission downshifting to a lower gear to match the reduced speed of the vehicle, increasing the engine speed.
What rpms are used to upshift and downshift a eaton fuller 18 speed?
You can do it at pretty much any RPMs, so long as your timing is right. I can hit gears upshifting at 1300 or 1900 RPMs with no problem. What the ideal shift range is will depend on the engine. As a general rule of thumb, most people say 1400 - 1600 RPMs... personally, I like to shift a bit higher, and drop back down into the powerband when I go into the next gear, so that the engine isn't as prone to bogging down.
