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Car engine idles rough?

Tiny
FEUSTOND
  • MEMBER
  • 1993 NISSAN ALTIMA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 96,500 MILES
My car idles rough but not all the time, seems like mostly when my gas is low, but not sure. Sometimes it will run for a week perfect then somtimes it misses out for 2 days straight, it dosnt die but it idles will rough but drives decent on highway.
Thursday, December 13th, 2007 AT 12:44 AM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the auxiliary air control valve this is the one that controls the idle speed.
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Thursday, December 13th, 2007 AT 3:07 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,536 POSTS
I would replace the fuel filter, this can become clogged and cause this issue. Also, I would change out the spark plugs and plug wires and service the throttle body, this guide should help fix it.

https://www.2carpros.com/articles/repairing-engine-rough-idle-issues

For a 1993 Nissan Altima, the recommended spark plugs are NGK V-Power (BKR5E-11) or Denso (K16PR-U11)

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Saturday, September 7th, 2024 AT 9:09 AM

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