1998 Honda Accord Engine Idling Problem at low RPMs

Tiny
SOTIREDOFCARPROBLEMS
  • MEMBER
  • 1998 HONDA ACCORD
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 300,000 MILES
OKay so my 1998 Honda 4 cylinder automatic Accord LX starts and runs just fine but it wont idle at low rpms without dying UNLESS ive been driving it for 30 minutes or more when its warmed up then it idles just fine. When I start it, I HAVE to keep the Rpms up above 1200 to keep it from dying. If it goes below that, the engine idle becomes rough and just dies. I have to keep it above 1200 rpms and then quicly shift into Drive to keep it from dying. However, once I drive it around for a bit, the idle is just fine. It sounds like its trying to get suction or intake air and its failing. When I press the gas pedal at low rpms, I can hear it(a hollow noise) in my exhaust pipe. When the idle gets low, the engine chugs and feels like a bouncing underneath my car(like a rough idle then quits). Its not my fuel intake or pump cause I can hear it turn on and plus, its unserviceable(i checked). Spark plugs are fine. I got a diagnostics check and it says my MAP Sensor says my engine pressure input is running too high. So I figured its my IAC since the highest engine pressure is at idling speed? HELP Thanks alot :)
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Wednesday, March 17th, 2010 AT 11:19 PM

1 Reply

Tiny
KHLOW2008
  • EXPERT
Hi Sotiredofcarproblems,

Seems the cold start fast idle is not working correctly causing the stalling when engine is cold.

Is the Check Engine Light indicating while driving?

You are correct, the problem is most likely to be due to the IAC. Get it cleaned together with the throttle body and readjust the idling speed to see if it fixes the problem.
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Friday, March 19th, 2010 AT 11:52 AM

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