My 93 GMC truck it won't start unless I unplug map sensor vacuum hose when I try it to plug it back up truck turns off its starts like fludding its smells a lot off gas. But with out it it stays runing

Asked by Dec 02, 2014 at 12:44 AM about the 1987 GMC C/K 10

Question type: Maintenance & Repair

1 Answer

7,610

Sounds like the result your sensor gives to your ECM is incorrect for the altitude. Fuel system pressures and volume tests should be run and a different sensor must be tried. Basic tune up check and spark parts should be inspected for wear and tracking issues. Sensor codes should be run from the ecm test link connector. Return with results to each of these tests and use A/C Delco parts where available. Since your vehicle exceeds 20 years, consult your maintenance records about tune up and fuel system repairs to date.

Your Answer

Add photo

Related Questions

Search GMC C/K 10 Questions

GMC C/K 10 Experts

#1 FordNut
FordNut
Reputation 80
#2 tennisshoes
tennisshoes
Reputation 30
#3 gearheadnard321
gearheadnard321
Reputation 20
View All

Related Models For Sale

Used Chevrolet C/K 10
272 listings starting at $19,900
Used GMC Sierra 1500
938 Great Deals out of 62,237 listings starting at $1,395
Used Chevrolet C/K 1500
1,048 listings starting at $2,000
Used Chevrolet Suburban
458 Great Deals out of 18,761 listings starting at $1,399
Used Chevrolet Blazer
1,340 listings starting at $1,995
Used Ford F-150
2,691 Great Deals out of 211,555 listings starting at $1,000
Used GMC Sierra
29 listings
Used GMC Jimmy
284 listings starting at $1,995