[FIXED] Ford v10 runs 2 or 3 seconds and dies.
My Pastor's 2008 f350 v10 runs a few seconds and dies consistently.
Fuel pressure 40-50 psi. PCM relay power,run/start relay power out is good.noid light on coil- primary connector shows flashing right up to when engine dies. However noid light on injector connector shows loss of PCM signal just before engine dies.positive power remains steady.
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- cheryl hartkorn
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- GeekDIYMechanic
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I honestly expected spark to stop, indicating a bad ignition module. But nope....
What was the last thing significant done to the truck, maintenance, accident, washing, ....?
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- Andy.MacFadyen
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" We're trying to plug a hole in the universe, what are you doing ?. "
(Walter Bishop Fringe TV show)
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To recap it's a 2008 f350 fx4 superduty 6.8 l v10 .
Starts and runs 2 or 3 seconds and dies. Positive power is good to PCM,fuel pump and injectors.
Gnd injector pulse to all 10 cylinders goes away after a couple seconds and engine dies. No codes on my Actron 180 scanner.
Update: I spoke online- service to a Master Ford tech and he said sounds like PCM.
I sent PCM to SIA and they said " central processor was bad and sent it back to me.
I ordered a refurb from Flagship 1 (through eBay )they flash programed and sent it to me. I did not know it would "not" be a plug and play. That's when things got really weird. I installed it and it wouldn't crank and the PATS light flashed rapidly .
I put it on a borrowed trailer and towed it with a borrowed truck to a locksmith . I only had 1 transponder key,so he cut a second one and tried to program the keys but failed. I then towed it to a specialist who has had it for 9 days now.
He had a better scanner than mine and was able to pull a p 1260 code - theft detected. He reprogrammed the keys- no joy.
Some thing about an ignition switch came up in his flow chart,but he didn't want to guess in order to protect his reputation . I said that's ok I'll guess. After reminding me that he does not do "repairs" only trouble shooting I went to his shop with a new ign sw and a new lock cyl with 2 new transponder keys. I opened up the steering column and low and behold some previous owner had tie wrapped a transponder key to the relocated immobilizer. So I put it back around the original lock cylinder and he reprogrammed the original and the just discovered "other" original transponder key. Hallelujah it cranks now- but dies.
Now we're back to the original problem. New PCM with fresh up to date flash program, new ignition switch, freshly programed keys. Injector pulse goes away after 2 or three seconds. Same p1260 code present.
Should I throw a crank position sensor ( Andy mentioned this) at it? Without a code for it? How does PCM and body control module interact?
Could the BCM be the problem? How is it that the PATS can disable the truck in 2 different ways? Why? I'm literally loosing sleep over this one.
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Aminal wrote: Now we're back to the original problem. New PCM with fresh up to date flash program, new ignition switch, freshly programed keys. Injector pulse goes away after 2 or three seconds. Same p1260 code present.
Agree with Ben, talking to the PATS module is the next step. The P1260 is (unfortunately) just a roadsign code, and isn't very valuable by itself. Forscan is a fantastic program - I've got Forscan Lite on my Android phone with a Bluetooth dongle, and it does a fantastic job.
How is it that the PATS can disable the truck in 2 different ways? Why? I'm literally loosing sleep over this one.
That's typical of newer anti-theft systems, in my experience. GM's will do the same thing, so that even if someone bypasses the starter, then vehicle still can't be driven away.
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- cheryl hartkorn
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I just ordered an OHP ELM 327 for IPhone ,iPad .
And downloaded FORScan for iPad. 4.99$ . No idea if it has bi-directional function.
Probably not for that price.
Also the specialist ( whom I'm hesitant to name just yet ) who has the truck said it also "had" a 1359 code ? I don't think it's a current code. Is that just another PATS code? Does that help?
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Aminal wrote: Ok I looked up p 1359. " spark" failure. PCM probably spit this one out when I put the noid light on one of the coil connectors. Primary pulse was good even while watching the engine die. I only checked this once. Then I put noid light on injector connector and found the real problem.
Interesting... That's a code you sometimes got on older Ford ignition module systems, related to the SPOUT connector. :huh:
Was is B1359? 'Cause that's "Ignition RUN/ACC Circuit Failure".
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Ok I'm real embarrassed about this one but if it helps anybody out here it will be worth the shame of it all.
Short version "MAF" sensor. The "specialist" that has the truck called today. He said he was able to keep on repeating the run-die scenario enough to test individual sensors and got a MAF code. He opened the air breather and found all the things you would find in a cow pasture that doesn't belong in there. Dirt grass etc. The filter was so clogged that it had collapsed. MAF was entombed in a mass of same. Replaced filter and MAF . Runs good.
My weak defense (very weak); I had no codes, Ford Master tech told me "looks like a PCM", SIA told me PCM was bad and sent it back to me, locksmith told me PCM (new one) would not communicate with key and needed to be reflashed,
Specialist reflashed PCM based on what I told him even though we had a no crank and fast flashing PATS light, ( I knew even less about PATS at that point). Keys were programmed 3 times, once by locksmith , then by Specialist and then again after I found key tie wrapped to immobilizer. Bill from specialist 431.$ PCM 450.$ ign switch 35$.
Of course PCM was shutting off fuel because there was no air, just like it's supposed to do duh!
Moral of story for me? Don't get bogged down with scanners and electronics , at least until after a good visual inspection,
A little probing with a test light and in my case waiting 9 days with it in the hands of a "Specialist" before I opened up the steering column to discover the source of the PATS problem.
Maybe you guys would like to add to the Moral of the story . At least pile on about what dufus I've been.
At 57 I'm kind of at a crossroads with this stuff. I've obviously fell behind in keeping up with the technology and I don't know if I should spend the money on an up to date scanner or not ( recommendations, link?).I haven't had to do this kind of thing for a living for quite some time, I just like to be able to help people out in my church when I can. So far I've been able to do it without charging anything. Anyway, an expensive lesson that I should have learned long ago, perhaps I just forgot.
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Aminal wrote: Fixed!
Ok I'm real embarrassed about this one but if it helps anybody out here it will be worth the shame of it all.
Short version "MAF" sensor. The "specialist" that has the truck called today. He said he was able to keep on repeating the run-die scenario enough to test individual sensors and got a MAF code. He opened the air breather and found all the things you would find in a cow pasture that doesn't belong in there. Dirt grass etc. The filter was so clogged that it had collapsed. MAF was entombed in a mass of same. Replaced filter and MAF . Runs good.
No shame at all, sir! I wasn't even thinking AT ALL about a lack of fuel problem. I dunno that anyone else here was, either? The symptoms matched a security issue so well that my mind didn't even go down that road.
Plus, the P1260 and PATS. Talk about a red herring! You shouldn't feel bad about how this turned out at all. Every professional tech out there has been there.
Speaking of! The newest SD video arrived a bit too late to help, but still worth watching. James totally went down the wrong path, even though the symptoms said he was on the right track.
At 57 I'm kind of at a crossroads with this stuff. I've obviously fell behind in keeping up with the technology and I don't know if I should spend the money on an up to date scanner or not ( recommendations, link?).I haven't had to do this kind of thing for a living for quite some time, I just like to be able to help people out in my church when I can. So far I've been able to do it without charging anything. Anyway, an expensive lesson that I should have learned long ago, perhaps I just forgot.
Never too late to get good at this stuff if you want to! That Bluetooth adapter you ordered, plus Forscan Lite, makes a pretty powerful package on Ford products. I was just using it on my Escape over the weekend, and found out that it has engine data PIDs that my Snap-On does not.
For other makes, there are options. OBD Auto Doctor is great for using Global OBDII data, very easy to use. You can also get a dedicated, stand-alone scanner. I own an Actron scanner, and it's always been great to me. South Main Auto is giving some away if you're feeling lucky .
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