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[FIXED] Explorer no spark - confirm my diagnosis

  • Exranger06
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9 years 1 week ago #1918 by Exranger06
Replied by Exranger06 on topic Explorer no spark - confirm my diagnosis
No worries, I also wanted to exhaust every other possibility before towing it anywhere to be reprogrammed. I was really hoping it wasn't a bad ECM because I really didn't want to tow it again. I will update with any more findings and/or conclusions.

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9 years 1 week ago - 9 years 1 week ago #1923 by Exranger06
Replied by Exranger06 on topic Explorer no spark - confirm my diagnosis
Update: New ECM arrived in the mail today and I wasted no time installing it. First thing I noticed: the check engine light turns off while cranking, which was not happening before. Second thing I noticed: live data on my scanner shows RPM while cranking, also something that wasn't happening before. I checked the ignition coil connector, and I have a pulse! I hooked up the spark tester and there is spark once again!

There is still no injector pulse, which no doubt is due to the PATS not letting the injectors fire. The Theft light flashes and I have a P1260 code, as expected. I'm going to call this officially diagnosed! I'll give this thread another update when I get the PATS reprogrammed and the engine finally starts. I'm not sure when I'll have the time and money to tow it somewhere to get that done, but I'll update when I do. Thanks for the help, everyone!
Last edit: 9 years 1 week ago by Exranger06.

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  • Tyler
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9 years 1 week ago #1926 by Tyler
Replied by Tyler on topic Explorer no spark - confirm my diagnosis

Exranger06 wrote: Update: New ECM arrived in the mail today and I wasted no time installing it. First thing I noticed: the check engine light turns off while cranking, which was not happening before. Second thing I noticed: live data on my scanner shows RPM while cranking, also something that wasn't happening before. I checked the ignition coil connector, and I have a pulse! I hooked up the spark tester and there is spark once again!

There is still no injector pulse, which no doubt is due to the PATS not letting the injectors fire. The Theft light flashes and I have a P1260 code, as expected. I'm going to call this officially diagnosed! I'll give this thread another update when I get the PATS reprogrammed and the engine finally starts. I'm not sure when I'll have the time and money to tow it somewhere to get that done, but I'll update when I do. Thanks for the help, everyone!


YAY! That's exactly what I wanted to hear!

Congratulations to you, sir - That was NOT an easy diagnosis. This'll be the first case I've heard of a PCM that just won't receive a signal from a functioning sensor :huh:

I'm gonna consider this fixed if that's cool with you?

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9 years 1 week ago #1938 by Exranger06
Replied by Exranger06 on topic Explorer no spark - confirm my diagnosis
Yes that's fine with me

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9 years 3 days ago #1993 by Noah
Replied by Noah on topic Explorer no spark - confirm my diagnosis
Great news, sure sounds like a fix to me. Looks like you had it right all along, nice work indeed.
Time for a beer!

"Ground cannot be checked with a 10mm socket"

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8 years 11 months ago #2792 by Exranger06
Replied by Exranger06 on topic Explorer no spark - confirm my diagnosis
Final update: I finally towed it to the Ford dealer on Thursday. They reprogrammed the computer, and it now starts and runs. Officially fixed!
The following user(s) said Thank You: Noah, Tyler

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8 years 11 months ago #2804 by Tyler
Replied by Tyler on topic Explorer no spark - confirm my diagnosis
Happy to hear it, sir! Also glad to hear the dealer didn't give you any static as far as the PATS programming.

Was always kinda disappointed that Ford didn't provide some kind of manual relearn procedure, like GM's 30 minute procedure. Sure, it takes awhile, but it's better than a trip to the dealer.

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8 years 11 months ago #2812 by shayne.johnston
Replied by shayne.johnston on topic Explorer no spark - confirm my diagnosis

Tyler wrote: Happy to hear it, sir! Also glad to hear the dealer didn't give you any static as far as the PATS programming.

Was always kinda disappointed that Ford didn't provide some kind of manual relearn procedure, like GM's 30 minute procedure. Sure, it takes awhile, but it's better than a trip to the dealer.


fyi snap-on scanner can now do some of the PATS programming on fords.

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8 years 11 months ago #2816 by Noah
Replied by Noah on topic Explorer no spark - confirm my diagnosis

shayne.johnston wrote:

Tyler wrote: Happy to hear it, sir! Also glad to hear the dealer didn't give you any static as far as the PATS programming.

Was always kinda disappointed that Ford didn't provide some kind of manual relearn procedure, like GM's 30 minute procedure. Sure, it takes awhile, but it's better than a trip to the dealer.


fyi snap-on scanner can now do some of the PATS programming on fords.

my rep told me about that with my last update, I haven't had the opportunity to try it out yet myself. Thanks.

"Ground cannot be checked with a 10mm socket"

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