HELP Ford on Road Dead
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Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
Mechanic said "Could not duplicate issue" He offered to keep the truck another day and take it for a spin tomorrow. I suggested he take it home tonight so he could get stuck but he declined my generous offer.
Now I'm dealing with my wife yelling at me cuz I stole her 150 to get to work today.
Now I'm dealing with my wife yelling at me cuz I stole her 150 to get to work today.
Postmaster
Joined: Jun 2006
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From: Fulltime RVer
Originally Posted by ryaneverk2
We've had folks before get a small rock stuck in the inbound fuel hose (fuel going from the tank to the pump) and clog it up, cutting off the fuel flow. If that happened to yours, could've burned up your first pump, and still be cutting off flow to this one.
Just one more idea to toss out there... Really hope you get this one figured out!
Just one more idea to toss out there... Really hope you get this one figured out!
Originally Posted by F350-6
When I disconnected the rear fuel line from the filter it sure didn't seem like there was any obstruction. I still feel like I'm wearing diesel.
Anyone have any ideas on how that glow plug light factors into all of this? If it stayed on the truck would crank but not start. If it went off it would fire right up. There's got to be a sensor or computer relay somewhere that is seeing what the problem is.
Anyone have any ideas on how that glow plug light factors into all of this? If it stayed on the truck would crank but not start. If it went off it would fire right up. There's got to be a sensor or computer relay somewhere that is seeing what the problem is.
Regarding "Anyone have any ideas on how that glow plug light factors into all of this?", is it possible that the PCM can sense if the full bowel gets filled ok prior to a start up cycle, and if it doesn't fill properly, the PCM won't turn off the "wait to start" light so that no attempt is made to start the truck with no fuel in the bowel?
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Post Fiend
Joined: Mar 2007
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Likes: 50
From: Texas
At first I was thinking this was bad fuel related but the start or no start combined with runs perfect or is dead have me thinking otherwise. I'm of the opinion bad fuel or junk in the fuel would at least make it run rough or give some other symptom.
As for the fuel bowl not being filled, I could hear the pump run like normal when the key was turned on but the truck wouldn't start. The last time it died I just let it sit for 10 minutes and it cranked right back up. Besides I've started my truck before with a 1/2 full bowl after changing the fuel filter. It runs a little rough getting the air out but started up fine.
I thought I read somewhere that the glow plug light isn't actually connected to the glow plugs, but instead was a timer based upon readings from sensors telling barometric pressure, temperature, altitude, etc. I was hoping someone knew how this was really wired in case I had to start looking for a short or bad sensor. It would narrow the search down if I knew which track to follow.
As for the fuel bowl not being filled, I could hear the pump run like normal when the key was turned on but the truck wouldn't start. The last time it died I just let it sit for 10 minutes and it cranked right back up. Besides I've started my truck before with a 1/2 full bowl after changing the fuel filter. It runs a little rough getting the air out but started up fine.
I thought I read somewhere that the glow plug light isn't actually connected to the glow plugs, but instead was a timer based upon readings from sensors telling barometric pressure, temperature, altitude, etc. I was hoping someone knew how this was really wired in case I had to start looking for a short or bad sensor. It would narrow the search down if I knew which track to follow.
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
To my knowledge, the PCM has no idea how much fuel is in the bowl or the available pressure, period. No sensors for that. That is why the Glow plug thing gave me pause. Do you have a California truck equipped with the GP control module?
EDIT: Gene, I am looking for a few posts, I have a reply for one of your ?s. Got busy with other things today. Go figure. I will still send you a PM tonight if not in the AM. Stand by. I have a few other loose ends to tie up outside.
EDIT: Gene, I am looking for a few posts, I have a reply for one of your ?s. Got busy with other things today. Go figure. I will still send you a PM tonight if not in the AM. Stand by. I have a few other loose ends to tie up outside.
Last edited by Tenn01PSD350; Jul 31, 2007 at 09:23 PM.
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Post Fiend
Joined: Mar 2007
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From: Texas
Originally Posted by Tenn01PSD350
Do you have a California truck equipped with the GP control module?
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Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
Update
Mechanic called back this morning. After driving it again today he could not duplicate the problem after a combined 100 miles of test driving. He said no charge just come pick it up and bring it back if it does it again. Picked up the truck, went 3 blocks, crossed some railroad tracks and all the dash lights flashed but it didn't die this time. Turned around and got the mechanic to ride with me. Crossed the railroad tracks with him and no lights (just my luck) turned around and hit them again and all the lights flashed on again.
Now he know what to look for and the tracks are only 3 blocks from his shop so I'm hoping he doesn't ruin my ball joints and shocks while testing this. I'll let you know more as I find out.
Now he know what to look for and the tracks are only 3 blocks from his shop so I'm hoping he doesn't ruin my ball joints and shocks while testing this. I'll let you know more as I find out.
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Post Fiend
Joined: Mar 2007
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From: Texas
Originally Posted by tolmite
As long as it doesn't die on the railroad tracks.
(I may have to delete this part later if the mechanic can't find the problem)