1998 gmc k1500

1998 GMC TRUCK
167,000 MILES • V8 • 4WD • AUTOMATIC
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SCREWDRIVER33
  • MEMBER
  • 3 POSTS
1998 gmc truck hard to start when cold or sitting for hours
Jan 3, 2011 at 9:30 PM
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FIXITMR
  • ✓Experienced Mechanic
  • 9,990 POSTS
when was last tune up? how cold is it? are you using premium gas?
Jan 3, 2011 at 9:43 PM
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SCREWDRIVER33
  • MEMBER
  • 3 POSTS
30,000 ago, 35 to 60deg f , using reg unleaded. I suspect fuel system or evap system. Have no driveability after start. drive 20 miles one way.
Jan 3, 2011 at 9:56 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,992 POSTS
You could be losing fuel pressure -check the actual fuel pressure with a gauge if its within specs-if okay test the coolant temperature sensor also clean out the idle air control valve and see what happens-
Jan 3, 2011 at 11:06 PM
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SCREWDRIVER33
  • MEMBER
  • 3 POSTS
I just replaced coolant temp sensor. will check fuel pressure tomorro and try to clean iac valve. thanks for the help.
Jan 3, 2011 at 11:17 PM
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