Problem with idle speed - 2002 Nissan Sentra GXE 1.8L

Underdog
0

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

Dustin McRae
425

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.

2 out of 2 people think this is helpful.
Justin Irwin-Rolles
95

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.

2 out of 2 people think this is helpful.

Your Answer

Add photo

Related Questions

  • What is the expected vacuum at idle for a 2001 nissan sentra? 5 answers

    Seeing 15" of mercury atm and not sure if that is too low for this 1.8L engine. System is running lean and won't stay started. Replaced fuel pump, oxygen sensors, fuel pressure regulator and inspect...

    2001 Nissan Sentra GXE

    -

    Maintenance & Repair

  • Are the alternators of Nissan Sentras interchangeable if the engine size is different? 3 answers

    I am trying to replace my 2003 Nissan Sentra alternator and its engine size is 1.8. I'm wondering if an alternator from a 2.5 will work.

    2003 Nissan Sentra GXE

    -

    Maintenance & Repair

  • 2003 Nissan Sentra GXE 1.8L misfires/smells/lost power 1 answer

    Just had a blown head gasket repaired, head resurfaced, valve job, #2 coil replaced. Got the car back seemed ok on the drive home, next day on the freeway it loses power, is misfiring and running rou...

    2003 Nissan Sentra GXE

    -

    Maintenance & Repair

  • 2004 Nissan Sentra 1.8L hard to start 1 answer

    My sentra has had this problem for several years. I have replaced I don't know how many fuel pumps. It will be fine for awhile then it will crank but won't start. I have to literally pump the gas peta...

    2004 Nissan Sentra 1.8

    -

    Maintenance & Repair

Search Nissan Sentra Questions

Nissan Sentra Experts

#1 L_R
L_R
Reputation 1,040
#2 Doran Harney
Doran Harney
Reputation 980
#3 Tom Demyan
Tom Demyan
Reputation 770
View All

Related Models For Sale

Used Nissan Altima"
764 Great Deals out of 80,605 listings starting at $1,200
Used Toyota Corolla"
998 Great Deals out of 72,494 listings starting at $1,499
Used Honda Civic"
514 Great Deals out of 61,526 listings starting at $1,350
Used Honda Accord"
665 Great Deals out of 76,057 listings starting at $1,400
Used Toyota Camry"
1,134 Great Deals out of 78,043 listings starting at $700
Used Nissan Maxima"
314 Great Deals out of 23,403 listings starting at $1,500
Used Hyundai Elantra"
452 Great Deals out of 60,122 listings starting at $1,450
Used Ford Focus"
693 Great Deals out of 65,832 listings starting at $1,100
Used Hyundai Sonata"
714 Great Deals out of 58,848 listings starting at $1,236
Used Volkswagen Jetta"
397 Great Deals out of 28,947 listings starting at $1,000
Used Chevrolet Malibu"
668 Great Deals out of 53,839 listings starting at $500

Used Cars For Sale

2016 Nissan Sentra For Sale
21,298 listings starting at $11,485
2015 Nissan Sentra For Sale
64 Great Deals out of 6,413 listings starting at $9,375
2014 Nissan Sentra For Sale
213 Great Deals out of 6,098 listings starting at $8,989
2013 Nissan Sentra For Sale
135 Great Deals out of 3,905 listings starting at $7,500
2012 Nissan Sentra For Sale
78 Great Deals out of 1,918 listings starting at $3,995