89 gmc searria cuts back when on the gas
Truck starts up fine ,put it in gear press the gas it
stalls like it wants to cut off, and sometimes does.
Is it the fuel pump or the egr?
or the fuel filter first check it then fuel pressure....
Thanks I'll check that out
@Kelly, I found out what was the problem. I had two sparkplug wires mix up. Starting to run fine, riding down the road it stops. Turn the key nothing. This is what I have changed on the 89 gmc. Alternator, starter, sparkplug and wire, fuel pump fuse, module under the distributor cap, egr, battery, throttle sensor, 5pin relay, idle air control sensor. I stump