- Thread starter
- #61
Yes I checked each fuse out of the truck and they all beeped good
Wont crank, odd situation.
- Thread starter 6894kevin
- Start date
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- Thread starter
- #62
I disconnected the battery and the FL... I have neg at neg post ant touched each post in the FL but only one had a reading
Ok, so we confirmed the following:
+12 at the gold screw in the under hood fuse block
+12 at the +B terminal on the diagnostic connector under the hood (with key in RUN position)
+12 at terminal 2 and 3 of EFI relay pins (with key in RUN position), EFI relay was warm when pulled. Was swapped with other relay for diagnostic purposes.
This points to the ECU or it's wiring.
A HUGE thanks to @jonheld for his pointing us in the right direction with his diagnostic sheet!
Next step is to unplug, check pins, replug ECU and check any harness connections between the battery and ECU.
Then will be to try a known good ECU.
BTW, this is an 8/94 manufacture truck, listed as a 94.
+12 at the gold screw in the under hood fuse block
+12 at the +B terminal on the diagnostic connector under the hood (with key in RUN position)
+12 at terminal 2 and 3 of EFI relay pins (with key in RUN position), EFI relay was warm when pulled. Was swapped with other relay for diagnostic purposes.
This points to the ECU or it's wiring.
A HUGE thanks to @jonheld for his pointing us in the right direction with his diagnostic sheet!
Next step is to unplug, check pins, replug ECU and check any harness connections between the battery and ECU.
Then will be to try a known good ECU.
BTW, this is an 8/94 manufacture truck, listed as a 94.
ppc
M Go Blue
Remove the fuse box cover from covering up the battery post so we can see what you have or have not hooked up.
What is the big lug hanging in mid air to the lower right of your red test lead in the last picture?
What are the two black lugs/wires to the left of the fuse box cover?
- Thread starter
- #67
Got a couple of cut wires, is that normal?
- Thread starter
- #71
Is there any I should know about resetting it, or will unplugging it do that?
- Thread starter
- #72
So you don't think it's the ECU??
- Thread starter
- #74
I think tonight is a liquor kinda night......
Do still need to check spark. If the CEL indeed works, then we need to verify spark during cranking.
Pull plug wire #1 and see if it will arc to the VC. Do it in a dark garage so you can see it better.
- Thread starter
- #78
No alarm, there was one but I cut it out when it started messing with my door locks. I can get a better picture of the cut wires tomorrow. I'll try the spark plug too.. if I dont get a spark should I look at the distributor next??
Then I would look to make sure all the plug wires are plugged in and there is a wire that goes to the distributor, make sure that one is plugged in. It's kinda by the PS reservoir.
Maybe a wire fell off when you dropped it.
Check the wires to the coil pack on the DS fender.
Check the fuse above the rear heater fuse with a test light. see if it has power.
