Mechanics

K1500

1998 GMC Truck • V8 4WD Automatic • 167,000 miles

1998 gmc truck hard to start when cold or sitting for hours
Avatar
Screwdriver33
January 4, 2011.



When was last tune up? How cold is it? Are you using premium gas?

Tiny
Fixitmr
Jan 4, 2011.
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.

Tiny
Screwdriver33
Jan 4, 2011.
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-

Rasmataz
Jan 4, 2011.
I just replaced coolant temp sensor. Will check fuel pressure tomorro and try to clean iac valve. Thanks for the help.

Tiny
Screwdriver33
Jan 4, 2011.