1991 GMC S15 Jimmy Q&A
1991 GMC S15 Jimmy Question: fuel problems
Beleive the computer uses crank and cam signals for injector pulse. If crank sensor is dead you will have no spark. If cam signal is lost the computer will use the last known value, but can be lost if battery goes dead or is disconnected. - todays tech
A 1991 4.3L does not have cam or crank sensors.It goes off the signal from the distributor sending the signal to the computer. - andygrace
i have replaced rotor,cap,wires and sparkplugs.also have new fuel injectors,map sensor throttle position sensor also the hole timing rotor.so lost please help i dont know wat to do next?i also took...
The fuel pump may fail causing the engine to stall and not restart. Our technicians recommend replacing the fuel filter every 30,000 miles to help prevent undue strain on the fuel pump.
We replaced wires and plugs already. It showed no warning b4 it died. Just didn't start back up one day.
what would i have to do to get to and replace the fuel injectors on a 4.3L V6 Vortec engine? its a model 220 throttle body injection. a detailed answer would great.
one day the truck decided not to start anymore, the engine is clearly cranking but it wont start, i changed the fuel pump and the fuel filter but the truck still does not start. if you know of any ...