*New* ECU from eBay arrived today. Popped the lid to look for smoke…all good. Put it in the truck and buttoned up all the connectors I’d undone troubleshooting.
CEL came on with key. Cranked and 🔥!
Idling now for 30mins to get everything moving...
I have everything that was ever made available for this vehicle 😬
Also, I picked up a cheap aftermarket EFI relay and swapped it in after the new fuse started melting. Fuse is no longer melting and truck is still running 40 minutes later. I’ll...
ok. so the easy thing is the efi relay.
Otherwise it sounds like you have a sensor failing pulling down the computer.
start unplugging main engine sensors until the light comes back.afm, tps, ect, o2 sensor.
The radio is the only thing that seems to have an issue when you hit the gas? Normally I'd say your alternator is failing, but you should see other issues with voltage drop too. Otherwise most likely a loose connection in your wiring?
Oh yeah. Cratered the board where it burned too so replacing the cap isn't an option lol.
There are some used M/T ECU's on eBay, is it worth getting one or is there a decent chance there's something else wrong that may smoke a second? My...
Unplugged all sensors. No changed. Pulled the center plug off the ECU which disconnects any I may have missed and checked voltage on VC pin… 0.1vdc.
Pulled the lid off the ECU….
Ok at VC and VCC I have about 0.1Vdc
At the ECU I have 12Vdc on the BATT pin (harness side) with ignition off (constant). I have 12Vdc on the B1 and B2 with the ignition switch on. E01 and E02 show good continuity to the mounting bolt for the...
First post in a long time on MUD, used to spend most of my time in the 60 series forum :). Bought a 91 pickup from a friend last year that I've been trying to get back on the road and have been banging my head against the wall for way too long...