Problem with idle speed - 2002 Nissan Sentra GXE 1.8L

Underdog
0

Asked by Underdog Apr 05, 2011 at 08:23 PM about the 2002 Nissan Sentra GXE

Question type: Maintenance & Repair

2002 Nissan Sentra GXE 1.8L

When starting the car cold it immediately revs to 2000 rpm and when it finally warms up it bounces revs between 1500 - 2000 rpm roughly.
If I let it run for a while occasionally the idle will simmer down to just under 1000 rpm as it should but after about another 20 seconds the idle goes up again to just under 2000 rpm.
If I try to press the gas ever so slightly it starts to idle up and down - press the gas a little more and the revs go right to 3000 rpm steady.

I have replaced the throttle position sensor and Air Mass sensor but no luck.
Have also used the carb cleaner trick to try to detect a vacuum leak with no effect.
No computer warning lights are currently on.

Any ideas?

2 Answers

Dustin McRae
165

sounds like a vacuum leak to be honest, i know on the spec v's there's an idle relearn process, but I don't remember it off the top of my head. Since you've replaced the MAF and TPS I'd just go ahead and reset the ECU again, and start it up and let it idle for ~15 minutes without touching the gas.

1 out of 1 people think this is helpful.
Justin Irwin-Rolles
65

sounds like the Idle Air Control valve is shorting out or outright bad.You can try cleaning the valve with PB blast and then MAF cleaner,but it probably will have to be replaced.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Search Nissan Sentra Questions

Nissan Sentra Experts

#1 Doran Harney
Doran Harney
Reputation 590
#2 L_R
L_R
Reputation 470
#3 Tom Demyan
Tom Demyan
Reputation 400
View All

Related Models For Sale

Used Nissan Altima"
1,530 Great Deals out of 79,560 listings starting at $995
Used Toyota Corolla"
1,186 Great Deals out of 54,286 listings starting at $995
Used Honda Civic"
842 Great Deals out of 57,329 listings starting at $995
Used Honda Accord"
1,259 Great Deals out of 65,756 listings starting at $1,000
Used Toyota Camry"
1,562 Great Deals out of 69,963 listings starting at $1,395
Used Nissan Maxima"
621 Great Deals out of 19,471 listings starting at $1,495
Used Hyundai Elantra"
806 Great Deals out of 46,086 listings starting at $1,299
Used Ford Focus"
1,745 Great Deals out of 63,439 listings starting at $1,400
Used Volkswagen Jetta"
1,100 Great Deals out of 37,000 listings starting at $1,950
Used Hyundai Sonata"
1,047 Great Deals out of 58,164 listings starting at $1,095
Used Chevrolet Malibu"
1,605 Great Deals out of 73,409 listings starting at $855

Used Cars For Sale

2014 Nissan Sentra For Sale
4 Great Deals out of 21,772 listings starting at $13,995
2013 Nissan Sentra For Sale
159 Great Deals out of 2,883 listings starting at $10,875
2012 Nissan Sentra For Sale
212 Great Deals out of 3,563 listings starting at $8,526
2011 Nissan Sentra For Sale
104 Great Deals out of 2,042 listings starting at $7,988
2010 Nissan Sentra For Sale
40 Great Deals out of 787 listings starting at $6,900