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1986 Chevrolet S-10 S-10

Tiny
ROBWILLI2012
  • MEMBER
  • 1986 CHEVROLET S-10
  • 2.8L
  • V6
  • 4WD
  • AUTOMATIC
  • 270,000 MILES
S10 idles high an low an I can rev it up. But when I put it in gear an give it gas it backfires thru the intake an cuts off an it will crank right back up.
Saturday, August 15th, 2015 AT 11:39 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,128 POSTS
If the idle is loping (up and down), chances are either you have a vacuum leak or the idle air control valve is bad. It's been awhile since I worked on an 86. Is it fuel injected (TBI) or still have a carb?
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Saturday, August 15th, 2015 AT 8:05 PM
Tiny
ROBWILLI2012
  • MEMBER
  • 1 POST
It's fuel injected. I replaced all the spark plugs an wires the distributor cap an button an it acted fine for a day then went back to doing the same thing.
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Sunday, August 16th, 2015 AT 4:25 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,128 POSTS
Is the engine code W? That would be the 8th code from right to left.
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Monday, August 17th, 2015 AT 1:15 PM

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