1987 Chevy Camaro rough idle

Tiny
TNIOP
  • MEMBER
  • 1987 CHEVROLET CAMARO
  • V8
  • 2WD
  • AUTOMATIC
  • 110,000 MILES
The engine runs smooth when cold and the choke is partially closed but after it has warmed up it runs rough. It does not quit under a load, i.E. In drive but not rolling. But has very rough idle. Recent tune up and all good vac lines. Rebuild 2 years ago with no issues up until now. No trouble lights or check engine lights are on. Is this possible valve adjustment?
Wednesday, May 27th, 2009 AT 4:08 PM

4 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
Does the engine have a carb or injection? I had an 86 with multi port injection.

LEt me know so I can better help.

Joe
Was this
answer
helpful?
Yes
No
Friday, July 3rd, 2009 AT 7:50 PM
Tiny
LOUT5369
  • MECHANIC
  • 217 POSTS
Put a vacuum gage on it, see what reading you have, should be steady 17-22hg, you could have intake leak.
Was this
answer
helpful?
Yes
No
Wednesday, July 22nd, 2009 AT 11:29 AM
Tiny
JHUERTA22
  • MEMBER
  • 15 POSTS
Have you checked the ohm readouts on the fuel injectors. That was what caused my rough idle.
Was this
answer
helpful?
Yes
No
Monday, September 7th, 2009 AT 9:43 PM
Tiny
LOUT5369
  • MECHANIC
  • 217 POSTS
Well, due to the fact you have a choke, I think we can rule out injectors. I would put a scanner on it and check the MAP sensor readout, TPS readout, I have had the vacuum hose for the MAP sensor collapse internally causing the map sensor to make the cars mixture not change(run rich or lean)
Was this
answer
helpful?
Yes
No
Tuesday, September 8th, 2009 AT 6:46 AM

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