91 Chevy Truck runs rough below 50 degrees

Tiny
BIGBEARZFAN34
  • MEMBER
  • 1991 CHEVROLET TRUCK
I have a 91 chevy truck that runs rough at start up, it spits, sputters and you can smell that it is very rich, (almost like driving a warm engine with the choke on) for about a minute or 2, the it runs fine. Now this only happens when the air temp is cool. Below about 50 degrees. It also only does it 1st thing in the morning or after the truck has sit for 5 of 6 hours. Any thoughts?
Wednesday, November 1st, 2006 AT 5:48 AM

2 Replies

Tiny
BIGBEARZFAN34
  • MEMBER
  • 2 POSTS
Thanks for the suggestion, but that didn't fix it. Neither did replacing the other coolant sensor on the intake, or the MAP sensor, or the computer, or the idle/air solenoid, anybody else have any thoughts
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Tuesday, November 14th, 2006 AT 10:57 AM
Tiny
DAZZLINLILLY
  • MEMBER
  • 1 POST
Did you ever find out what the problem was?My 92 chevy does the same thing exactly!Couldnt have described it better!
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Monday, December 6th, 2010 AT 4:29 PM

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