When i start my car up it just revs up to 4000 rpm i put it in drive it goes to 3000 rpm.. What could be doing thec

Asked by Dec 19, 2013 at 01:04 PM about the 1999 Pontiac Grand Prix 4 Dr SE Sedan

Question type: Maintenance & Repair

It has new plugs n wires , n EGR
valve .. Its the 3.1 v 6 engine

7 Answers

I'd look at the fuel pressure regulator...the vacuum hoses to it...replace all butyl rubber with silicone rubber....for reliable service~

1 of 1 people found this helpful.
1,175

Is it actually turning 4000 RPM, then 3000 RPM or is your tachometer just gone crazy. Seems to me if the transmission was any good the car would lurch forward with the front tires smoking. If it's not doing this you mave more than just a "high idle" problem. Good luck with it!!

34,565

Could be a dirty throttle butterfly holding the throttle open, could be a floor mat holding the gas pedal down a tad. Very little gas needs to be applied to achieve4000rpm neutral, I doubt the idle air control solenoid would open far enough for this to happen but that is also a possibility.

30

sounds like its sucking air, I had a vacuum line came off and did the same thing, so look for vacuum leaks.

1 of 1 people found this helpful.

silicone lines like the cops use and what BMW and Mercedes uses...for reliability~

1 of 1 people found this helpful.
10

my car jumps to 4000 and i put in to gear it lowers to 3000 and then as it gos it goes faster i took the throttle cable of and throttle plate is closed on 2000 PONTIAC GRAND AM V6 SE whats wrong with my car

1 of 1 people found this helpful.
34,565

Could be idle air control stuck open, vacuum leak, You are positive the throttle is 100% closed, could be the cruise control cable, the throttle plate doesn't need to be opened very much to achieve 4000 rpm.

1 of 1 people found this helpful.

Your Answer

Add photo

Related Questions

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 2,767 nationwide Grand Prix listings starting at $1,200.

ZIP:

Search Pontiac Grand Prix Questions

Pontiac Grand Prix Experts

#1 Js08016
Js08016
Reputation 4,370
#2 Tom Demyan
Tom Demyan
Reputation 2,970
#3 munron
munron
Reputation 2,350
View All

Related Models For Sale

Used Chevrolet Impala
561 Great Deals out of 34,682 listings starting at $1,000
Used Pontiac Bonneville
522 listings starting at $1,799
Used Chevrolet Monte Carlo
13 Great Deals out of 1,354 listings starting at $995
Used Pontiac Grand Am
1,087 listings starting at $1,599
Used Ford Mustang
728 Great Deals out of 42,730 listings starting at $1,300
Used Chevrolet Camaro
422 Great Deals out of 31,644 listings starting at $2,395
Used Chevrolet Malibu
1,215 Great Deals out of 78,019 listings starting at $1,500
Used Pontiac Firebird
11 Great Deals out of 816 listings starting at $1,900
Used Honda Accord
988 Great Deals out of 62,549 listings starting at $999

Used Cars For Sale

2008 Pontiac Grand Prix For Sale
12 Great Deals out of 378 listings starting at $1,200
2007 Pontiac Grand Prix For Sale
13 Great Deals out of 368 listings starting at $1,350
2006 Pontiac Grand Prix For Sale
9 Great Deals out of 463 listings starting at $1,800
2005 Pontiac Grand Prix For Sale
4 Great Deals out of 359 listings starting at $2,350

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.