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4m40 v4aw3 no lock up


 
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octanepwr
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Age: 36
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PostPosted: Tue Jul 27, 2021 0:11    Post subject: 4m40 v4aw3 no lock up Reply with quote

Hi all

I still have OD working but not getting lock up. It does lock up in OD intermittently.

I've tried testing resistance of all the Trans ecu pins and can't find any that read 12 ohm. Perhaps the lock up solenoid is broken but I'm not even finding any pins that appear to be solenoid connections.

Given I get OD I'm thinking it's not the water temp sensor?

Has anyone got a pin out diagram for the Trans ecu?

Any ways to fault find further?

Fluid and filter recently changed and doesn't smell. Was a bit brown when came out but not burnt. Worked for about 400km after this change but had intermittent issues once prior, given only once on a short drive I didn't do anything about it.

Kick down cable isn't tight.

Thanks
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PostPosted: Tue Jul 27, 2021 0:11    Post subject: Google Ads keep the POCUK free to join!


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PostPosted: Thu Jul 29, 2021 4:45    Post subject: Reply with quote

Have you checked the ATF level using the correct procedure? A common problem.
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octanepwr
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PostPosted: Fri Jul 30, 2021 21:42    Post subject: Reply with quote

Yep. A little above full but turns out it was water temp sensor. I grounded out the plug and works great
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