Having problem with TC lockup not engaging!
#1
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When the truck warms up after driving it for 15-25 minutes it will at times not go into TC lockup after the 4th gear upshift on level ground...even with letting out the gas or tapping the brake pedal.
When it is working correctly tapping the brake pedal will kick the tc out as well as letting off the gas.
Has the orginal pressure manifold and TC selinoid and wiring in the trans...I went and purchased these to install but my tranny man seems to think it is in the PCM programing? So I have not installed these as yet.
It used to do this with the old 350 engine but only once in a while on the freeway...not everyday like it does now.
My scanner says TC is being forced off when it happens with no feedback. Trans temp is over 150 degrees and does not drop off.
Any help with this would be greatly appreciated as it is really bugging me!
Ken
When it is working correctly tapping the brake pedal will kick the tc out as well as letting off the gas.
Has the orginal pressure manifold and TC selinoid and wiring in the trans...I went and purchased these to install but my tranny man seems to think it is in the PCM programing? So I have not installed these as yet.
It used to do this with the old 350 engine but only once in a while on the freeway...not everyday like it does now.
My scanner says TC is being forced off when it happens with no feedback. Trans temp is over 150 degrees and does not drop off.
Any help with this would be greatly appreciated as it is really bugging me!
Ken
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Im not tranny expert but me an my friends dad both had the same problem with are trannys on are 1996 trucks. I sold mine an my friend had his rebuilt twise befor they ever got it fixed. But I dont really know what is wrong with them internally,...........just my 2 cents
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Originally Posted by TIRBRNR
Engine misfire will keep conv from locking.
Ken
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i have had some random tcc lockup problems in mine also...where sometimes it just won't like up... it happens a lot when the engine is cold, and then i have had it happen on long drives and many other random times..the tcc lockup kinda seems to come and go for me
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