COLD CRANK CAR HAS A ROUGH IDLE

  • Tiny
  • Anonymous
  • 2003 Infiniti I35
  • 180,000 miles

Cold crank car has a rough idle. The car doesn't have its smooth idle in the morning anymore. Taken to shop, but they seem to can't find the problem.

Wednesday, October 17th, 2012 AT 5:01 PM

1 Answer

  • Tiny
  • KHLow2008
  • Expert
  • 41,938 posts

If the cold start rpm is low it could be due to various reasons.
Do you have coolant losses or overheating issues?
Are there any trouble codes?
After warming up, what is the idling speed and does it change when A/C is turned on?
Are there any performance and driveability issues?

Try cleaning the IAC and throttle body for a start.

Was this
answer
helpful?
Yes
No
Wednesday, October 17th, 2012 AT 10:00 PM

Please login or register to post a reply.

Similar Questions