1989 Chevy Blazer No throttle respond or fuel from injector

1989 CHEVROLET BLAZER
150,000 MILES • V8 • 4WD • AUTOMATIC
Avatar
BAKERACER7
  • MEMBER
  • 1 POST
I have 89 full size blazer 4x4. I can drive it for around 20 minutes then there is no throttle response, no fuel is shooting from the injectors. I can cut the truck off and it will crank right back up and I can drive it another 20 minutes. I have checked the map, tps. It has new plugs, wires, coil, fuel pump, fuel filter
Nov 9, 2010 at 6:41 AM
Advertisement
Avatar
HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
check th vacuum hose going to the map sensor. If it's soft replace it. then check your connections from and around the distributor. if there are no distributor pulses, the injector quits working. you may have a badwire or connection or maybe the ecm in the dist may be getting hot and needs some dielectric compuond on the ecm where it bolts down to the dist housing. It goes under the ecm.. Also check the pickup coil wires as it moves all the time so it may not be giving the ecm a signal..
Nov 10, 2010 at 10:03 AM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle