Replaced a plethora of parts and she still won't act right. Will not start nor stay on when it does actually start.

Asked by Jul 29, 2016 at 06:10 PM about the 1987 GMC Sierra

Question type: Maintenance & Repair

My truck won't start at all now. It will chug like it's trying to start (not clicking, my battery and alternator are both brand new). I've replaced the distributor in it's entire. Ignition control module. Fuel filter. Pump is priming just like it's supposed to. Changed the Throttle Position sensor. New plugs. Now we've come down to the possibility of my carburetor needing to be either rebuilt or replaced.
It stalls when I'm in the middle of driving, and I have to 2-foot it to keep it on (I know it's bad for it but it's my only source of transportation so I've got no choice). At idle, in park, any gear, it will shut off completely, and usually it will start right back up. Bad gas mileage, laggy acceleration.. It's just all-around terrible. Any help is greatly appreciated.

1 Answer

PS: It's a 4.3L in case that matters at all.

Your Answer

Add photo

Related Questions

Search GMC Sierra Questions

GMC Sierra Experts

#1 dandyoun
dandyoun
Reputation 110
#2 Js08016
Js08016
Reputation 90
#3 John Saffrahn
John Saffrahn
Reputation 80
View All

Related Models For Sale

Used GMC Sierra 1500
896 Great Deals out of 64,572 listings starting at $1,500
Used Ford F-150
2,387 Great Deals out of 209,709 listings starting at $895
Used Chevrolet Camaro
149 Great Deals out of 34,915 listings starting at $1,995
Used GMC Sierra 2500
162 listings starting at $2,400
Used Jeep Wrangler
286 Great Deals out of 19,017 listings starting at $3,295

Used Cars For Sale