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 Theebone30 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

judge_roy
Not Active

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

zoneman
795

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
20,225

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
20

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

judge_roy
Not Active

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

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
20,225

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

Related Questions

Grand Prix
Looking for a Used Grand Prix in your area?
CarGurus has 3,866 nationwide Grand Prix listings starting at $299.
ZIP:

Search Pontiac Grand Prix Questions

Pontiac Grand Prix Experts

#1 Js08016
Js08016
Reputation 1,930
#2 Tom Demyan
Tom Demyan
Reputation 1,640
#3 John Saffrahn
John Saffrahn
Reputation 1,080
View All

Related Models For Sale

Used Chevrolet Impala"
1,276 Great Deals out of 59,758 listings starting at $2,000
Used Pontiac Bonneville"
22 Great Deals out of 702 listings starting at $1,800
Used Pontiac Grand Am"
37 Great Deals out of 1,917 listings starting at $1,200
Used Chevrolet Monte Carlo"
26 Great Deals out of 1,765 listings starting at $2,495
Used Chevrolet Malibu"
920 Great Deals out of 60,742 listings starting at $888
Used Ford Mustang"
507 Great Deals out of 35,081 listings starting at $145
Used Chevrolet Camaro"
338 Great Deals out of 34,450 listings starting at $1,950
Used Nissan Altima"
1,263 Great Deals out of 83,464 listings starting at $1,495
Used Nissan Maxima"
404 Great Deals out of 14,318 listings starting at $1,800
Used Honda Accord"
1,070 Great Deals out of 60,964 listings starting at $900
Used Toyota Camry"
1,477 Great Deals out of 77,661 listings starting at $1,200