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Car starts and runs but at 4000rpm car dies out

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Hi have you check the air mass unit it is fitted after the filter when you have the car running for a few minutes disconnect the wire connecting it to the computer system then see if it runs o k if all is good the replace the air mass unit

Posted on Nov 13, 2014

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2007 chevrolet impalahave a 07 impala runs great till ur rpm meter goes past 4000rpm then drops down to 0 runs bad after shut down engine for around 10 mins then runs good again check with scanner no


It needs a scanner on it to find the problem while driving it. Several things can cause this. At 4000 rpm's in park the ecm will suppress the engine. this would be the Neutral safety switch. So going from there, if not the switch, it could be wiring or a bad buffer in the ecm.

Oct 16, 2014 | 2007 Chevrolet Impala

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2002 Ford Taurus LX Very low power and acceleration and will die after short distance. Will rev up to 4000rpm when in park.


possibly the crank shaft sensor. i had to help a family member with a change on a xterra with same issues and it fixed problem. but a mechanic will be the best one to ask

Oct 13, 2014 | Cars & Trucks

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1994 buick lesabre The car starts and runs fine until you rev it up to 4000rpm, standing or driving,at that point all the dash warning lights come on,oil pressure, temp,volts and the engine dies. Will not...


  1. yes, fist check the battery make sure your getting 12v, check the alternator, that your problem right now. also check al fuse and reley for proper operation.

Jul 31, 2009 | 1994 Buick LeSabre

1 Answer

My car is idling at 4000rpm not returning to normal....


sounds like a vacuum hose look hard it may also be the mass air flow sensor

Jun 25, 2009 | 1987 Honda Civic

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Hi i have a 1999 vw passat 2.8 v6 and the problem is that my car does not accelerate as normal,it goes up to 1500 rpm and 2000 rpm and it goes up and down,if i step more on gas it passes the 2000rpm but...


p1545 is a throttle control malfuction code

You can try to reset the throttle body by opening the hood and drivers door then turning your key to the accessory position. You will hear the throttle body whir and click. It may take up to two minutes. Afterward, the car will relearn your habit of driving and adjust accordingly.

Jun 25, 2009 | 1999 Volkswagen Passat

1 Answer

Engine bogs out,dies over 4000rpm,after10 or20 mins.it will start


When the car is in its failure mode, have someone man the accelerator and listen at the tailpipe. Have the helper gradually raise engine RPMs and see if the normal muffled sound of combustion turns into more of a hiss.
If the catalytic convertor has failed, it may have lost chunks of ceramics that are clogging the rest of the exhaust system. 

Jan 26, 2009 | 2000 Pontiac Grand Am GT

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