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

SOURCE: engine stalls

my friend had one that did the same and he replaced throttle positioning sensor and it fixed it. but when you put a new battery in them they wont idle until you hold at steady low rpm for almost a minute because it has to relearn its position. so check your voltage meter and make sure it is around 13-14 volts when running and not on 12 while running because it could be too low of voltage for it and would be the same principle as disconnecting the battery because it takes 12 volts to keep computer on. hope I wasnt too confusing but I just want you to check your voltage for free before you buy electrical parts.

SOURCE: p0171 and p0463

Replace the fuel pump module (inside the fuel tank) it has 2 level sensors on it. The po463 code is an open condition on the high level sensor, one sensor reports to the ECM, other to your gas gauge on the dash.

SOURCE: 1987 chevy S10 engine idle problem

relace the throtle air idle valve.The temp switch will allso cause this problem.

SOURCE: bad smell in air vent chevy impala

It is not fixed by an aerosol or scent additive to the air in the cabin. It will only mask the smell for a period of time.

Your cause is the air filter for the A/C system. You can buy a new one at local auto stores.

To replace it, you will need to open your hood. On the passenger side of the car, look just under the windshield at the trim panel under the wipers. You will see several tabs holding down this particular side of the trim piece. Using a phillips head screwdriver, gently rotate the screw pieces out of the tab holder (if this doesn't get it, you'll need to use a small flat head in unison to apply pressure to the screw to come out). There are 3. Once these are removes, gently pull the hood rubber gasket seal up and place out of the way. Note: you won't need to remove it from the car, just enough to clear the trim piece. Remove the trim and you will see a filter. Remove the filter and replace. Installation of trim is reverse.

That will fix your mildew smell from the vents. This WILL NOT fix a mildew smell if caused by interior mildew.

Note: The directions to change this filter are also found in your Owner's Manual if you have it. It is a simple procedure and should take about 15 minutes if you are taking your time.

Thanks for the inquiry.

Marvin

• 85242 Answers
• Posted on Oct 18, 2009

SOURCE: brake pedal dropping to floor

do u have the antilock brake bleeding tool? if not you will need to have the dealer bleed the brakes, the ABS control valve must be electricaly held open to bleed the brakes there of course is a special tool for this.

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