19bee70
New Member
- Joined
- September 24, 2015
- Messages
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- City, State
- Sunshine State
- Year, Model & Trim Level
- 1996 Explorer-Eddie Bauer
Hello guys and gals,
I have screened many of these same problems on various other postings but after having my truck sit for a week and not being any closer to getting it started, I felt it was time to post!
Here's the deal:
Background- over the last year I've had random, maybe 4-5 occasions where I'd drive a short distance and shut off the truck and it simply wouldn't fire back up. I'd have to wait 5-10 minutes and then it would fire. I couldn't seem to find the common denominator on why this was happening. Recently, it had been running just fine; crank anytime and any place. Last week, after getting food at a drive thru, I pulled out onto the street and at the moment I rolled thru the little water drain dip next to the curb, the truck just quit. It was like I had turned the key off. Totally quit. I cranked and cranked- no fire at all. I sat with it for 10 minutes and cranked again. Nothing. Had it towed home and here it sits.
What I've checked so far:
The battery is charged
The other accessories all work.
I CAN NOT hear the fuel pump working
I checked the fuses under the hood for resistance and burn thru- all good
I swapped relays around- no change
I jumped socket 30 and 87 at FPR - pump comes on and fuel pressure gage reads 35psi (attached to schrader)
I tried to crank the truck with the fuel relay jumped but it would start that way either.
I checked inertia switch- button still pressed
disconnected and jumped inertia switch with wire- no fuel pump coming on unless I jump FPR sockets
No evidence of burnt wiring, connectors, or pins in fuse/relay box
I pulled CKPS and cleaned/inspected component and wiring. APPEARS ok.
Inspected alignment with interupter and CKPS looks like it's still in line after getting input from a Ford mechanic about some of the interupter hubs shifting because of age and deterioration of the rubber core I guess, I can't see where that has happened.
I HAVE NOT done any continuity checks with wiring back to the pump. REASON? If I can get the pump to run by jumping the socket, logically there wouldn't be a break? Right?
I checked the connection with the PCM and pulled the connection to inspect the pins . Nothing bent , broken or pushed in.
I'm to the point where, if I understand the concept, the PCM doesn't appear to be getting the signal from the CKPS to tell the relay to close and send power thru the inertia switch to the pump to run and start the truck? Any I tracking?
Other than by a CKPS, what have I overlooked? I'd REALLY like to get my truck up and running over the weekend!!!
I hope this narrows down the advice possibilities for you gurus! Thanks a bunch!
UPDATE 10/3/15*****
All the indepth inspections and research can't fix a basic oversight. The truck is up and running with a .50 repair! Turns out it was fuse #19 under the dash that controls PCM/Ign Coils. How easy when it's a basic, entry level inspection that I didn't do. At this point I still don't know what caused it to blow. It's running now and I'll know exactly what to check if it happens again!
I have screened many of these same problems on various other postings but after having my truck sit for a week and not being any closer to getting it started, I felt it was time to post!
Here's the deal:
Background- over the last year I've had random, maybe 4-5 occasions where I'd drive a short distance and shut off the truck and it simply wouldn't fire back up. I'd have to wait 5-10 minutes and then it would fire. I couldn't seem to find the common denominator on why this was happening. Recently, it had been running just fine; crank anytime and any place. Last week, after getting food at a drive thru, I pulled out onto the street and at the moment I rolled thru the little water drain dip next to the curb, the truck just quit. It was like I had turned the key off. Totally quit. I cranked and cranked- no fire at all. I sat with it for 10 minutes and cranked again. Nothing. Had it towed home and here it sits.
What I've checked so far:
The battery is charged
The other accessories all work.
I CAN NOT hear the fuel pump working
I checked the fuses under the hood for resistance and burn thru- all good
I swapped relays around- no change
I jumped socket 30 and 87 at FPR - pump comes on and fuel pressure gage reads 35psi (attached to schrader)
I tried to crank the truck with the fuel relay jumped but it would start that way either.
I checked inertia switch- button still pressed
disconnected and jumped inertia switch with wire- no fuel pump coming on unless I jump FPR sockets
No evidence of burnt wiring, connectors, or pins in fuse/relay box
I pulled CKPS and cleaned/inspected component and wiring. APPEARS ok.
Inspected alignment with interupter and CKPS looks like it's still in line after getting input from a Ford mechanic about some of the interupter hubs shifting because of age and deterioration of the rubber core I guess, I can't see where that has happened.
I HAVE NOT done any continuity checks with wiring back to the pump. REASON? If I can get the pump to run by jumping the socket, logically there wouldn't be a break? Right?
I checked the connection with the PCM and pulled the connection to inspect the pins . Nothing bent , broken or pushed in.
I'm to the point where, if I understand the concept, the PCM doesn't appear to be getting the signal from the CKPS to tell the relay to close and send power thru the inertia switch to the pump to run and start the truck? Any I tracking?
Other than by a CKPS, what have I overlooked? I'd REALLY like to get my truck up and running over the weekend!!!
I hope this narrows down the advice possibilities for you gurus! Thanks a bunch!
UPDATE 10/3/15*****
All the indepth inspections and research can't fix a basic oversight. The truck is up and running with a .50 repair! Turns out it was fuse #19 under the dash that controls PCM/Ign Coils. How easy when it's a basic, entry level inspection that I didn't do. At this point I still don't know what caused it to blow. It's running now and I'll know exactly what to check if it happens again!
