Problem with idle speed - 2002 Nissan Sentra GXE 1.8L

Asked by 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

595

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.

5 people found this helpful.
135

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.

6 people found this helpful.

Your Answer:

Nissan Sentra Experts

  • #1
    L_R
    Reputation
    1,450
  • #2
    Doran Harney
    Reputation
    1,400
  • #3
    Tom Demyan
    Reputation
    1,200
View All

Related Models For Sale

Used Nissan Altima
721 Great Deals out of 66,653 listings starting at $1,499
Used Toyota Corolla
599 Great Deals out of 66,337 listings starting at $900
Used Honda Civic
359 Great Deals out of 49,146 listings starting at $1,499
Used Toyota Camry
749 Great Deals out of 72,764 listings starting at $1,000
Used Honda Accord
564 Great Deals out of 103,244 listings starting at $950
Used Hyundai Elantra
462 Great Deals out of 48,280 listings starting at $1,700
Used Nissan Maxima
209 Great Deals out of 16,497 listings starting at $1,650
Used Ford Focus
389 Great Deals out of 80,662 listings starting at $1,300
Used Hyundai Sonata
371 Great Deals out of 47,592 listings starting at $1,900
Used Volkswagen Jetta
424 Great Deals out of 24,946 listings starting at $1,500
Used Chevrolet Malibu
479 Great Deals out of 51,476 listings starting at $1,975

Used Cars For Sale

2018 Nissan Sentra For Sale
5 Great Deals out of 26,927 listings starting at $13,399
2017 Nissan Sentra For Sale
130 Great Deals out of 5,896 listings starting at $8,980
2016 Nissan Sentra For Sale
108 Great Deals out of 3,834 listings starting at $7,991
2015 Nissan Sentra For Sale
112 Great Deals out of 3,314 listings starting at $5,999
2014 Nissan Sentra For Sale
104 Great Deals out of 2,668 listings starting at $5,490

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.