1994 Chevy Blazer

1994 CHEVROLET BLAZER
175,000 MILES • V8 • 4WD • AUTOMATIC
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LOWFAT
  • MEMBER
  • 1 POST
my tach jumps and my idle runs rough sometimes and it is hard to start when it is cold. This is what I have changed fuel pressure regulator,TPS switch. can anybody help??
Oct 23, 2009 at 11:11 AM
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JDL
  • ✓Experienced Mechanic
  • 16,098 POSTS
Welcome to the forum, when was last tune-up? plugs--plug wires--cap--rotor, all filters. Use a gage and check fuel pressure. Clean the throttle-body, any codes?
Oct 23, 2009 at 1:16 PM
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