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

Theebone30
0

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 out of 1 people think this is helpful.
zoneman
975

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!!

John Saffrahn
27,765

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.

flej22
30

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

1 out of 1 people think this is helpful.

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

1 out of 1 people think this is helpful.
fcars
0

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

John Saffrahn
27,765

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 out of 1 people think this is helpful.

Your Answer

Add photo
Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 4,096 nationwide Grand Prix listings starting at $1,833.

ZIP:

Search Pontiac Grand Prix Questions

Pontiac Grand Prix Experts

#1 Js08016
Js08016
Reputation 3,200
#2 Tom Demyan
Tom Demyan
Reputation 2,280
#3 munron
munron
Reputation 1,640
View All

Related Models For Sale

Used Chevrolet Impala"
493 Great Deals out of 30,145 listings starting at $1,236
Used Pontiac Grand Am"
1,904 listings starting at $1,500
Used Pontiac Bonneville"
3 Great Deals out of 703 listings starting at $1,695
Used Chevrolet Monte Carlo"
19 Great Deals out of 1,817 listings starting at $1,495
Used Ford Mustang"
312 Great Deals out of 42,429 listings starting at $1,900
Used Chevrolet Malibu"
668 Great Deals out of 53,839 listings starting at $500
Used Chevrolet Camaro"
203 Great Deals out of 25,586 listings starting at $2,995
Used Nissan Maxima"
314 Great Deals out of 23,403 listings starting at $1,500
Used Pontiac Firebird"
8 Great Deals out of 777 listings starting at $2,750
Used Nissan Altima"
764 Great Deals out of 80,605 listings starting at $1,200
Used Honda Accord"
665 Great Deals out of 76,057 listings starting at $1,400

Used Cars For Sale

2008 Pontiac Grand Prix For Sale
23 Great Deals out of 538 listings starting at $2,800
2007 Pontiac Grand Prix For Sale
11 Great Deals out of 533 listings starting at $1,998
2006 Pontiac Grand Prix For Sale
10 Great Deals out of 676 listings starting at $1,995
2005 Pontiac Grand Prix For Sale
7 Great Deals out of 495 listings starting at $2,495
2004 Pontiac Grand Prix For Sale
4 Great Deals out of 690 listings starting at $1,833