E40d issues
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Joined: Sep 2019
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E40d issues
I have a 1991 F250 7.3l idi n/a with the E40d. For 2 months it’s sat being moved only every week or so while being painted and a few days ago i went to start it and the battery had died. So when i recharged and and started it i put it and drive and it would only go into 4th(or 2nd if i manually selected it). The tach has previously worked irraticly but now doesn’t work at all and the od light glows continuously. The trans was rebuilt just under a year ago. After lots of trouble shooting i know the eec relay works, but i think the pcm might be bad? Or there’s no power to the trans. I’m stuck in a hole as I’m not sure how to troubleshoot further so please help!!!
Tuned
Joined: Dec 2013
Posts: 363
Likes: 37
From: Corinth, TX
Who rebuilt the transmission?
Who installed the rebuilt transmission?
Have you hooked up a reader to see if there are any codes the transmission is giving?
Was only the outside being repainted? did they remove panels/hood?
I would make sure your tach sending unit/wires up near the oil cap is ok,
Who installed the rebuilt transmission?
Have you hooked up a reader to see if there are any codes the transmission is giving?
Was only the outside being repainted? did they remove panels/hood?
I would make sure your tach sending unit/wires up near the oil cap is ok,
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Update -kind of found the issue. I was fiddling around with connectors coming to and from the pcm, something worked and all functions returned to normal. However when i go over bumps it will disconnect again and go back and forth in and out of limp mode. Just have to find the loose connection now. Any common ones?
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