1990 Pontiac 6000 rough idle

Tiny
NUBEE12
  • MEMBER
  • 1990 PONTIAC 6000
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 13,400 MILES
Car runs great on hwy but idles rough replaced iac didnt make any difference new plugs wires coils ignit mod? ANY SUggestions
Wednesday, January 13th, 2010 AT 5:39 PM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Cleant your throttle plate with choke cleaner on both sides as that canreally effect your idle. It may be hard to start but make sure your duct isreconnected prior to starting. If that doesn' help it there is a what they call a purge valve on yoru cannister, for fuel. There may be a vacuum line running to it and it may be on the pasenger side of the car at the front. It is red. It is supposed to open at 30 mph to burn off excess fuel in the cannister, but somtimes sticks open an dcauses idle problems.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
-1
Wednesday, February 24th, 2010 AT 5:55 PM

Please login or register to post a reply.

Related Engine Idle Rough Content

Rough Engine Idle
GUIDE
Rough Engine Idle
A rough engine idle condition is a common issue that many drivers face often indicating underlying problems within the engine, fuel or ignition system. We have created this...
VIEW MORE

Sponsored links