Hard Thump From 4L60
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From: McAllen, Tx.
Hard Thump From 4L60 I've got a beefed up 4l60E. Is it normal for the tranny to thump real hard when down shifting into 1st while coming to a stop? It's a pretty solid thump. Or is this a sign the tranny is going to take a dump?
Also, I've noticed that while city driving, my tranny will sometimes stay stuck in 2nd gear. I have to pull over and let it cool off for about 10 minutes so it'll work right again. BTW, I'm running a PT4000.
Also, I've noticed that while city driving, my tranny will sometimes stay stuck in 2nd gear. I have to pull over and let it cool off for about 10 minutes so it'll work right again. BTW, I'm running a PT4000.
1 have you tuned for the stall , Checked for codes,
those were questions rekating to the 2nd gear.
What servo set up is in the car?
does it do this clunk just in D or in overdrive or manually, manually it certainly should.
those were questions rekating to the 2nd gear.
What servo set up is in the car?
does it do this clunk just in D or in overdrive or manually, manually it certainly should.
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From: McAllen, Tx.
Yes it's tuned. Unfortunately I'm not sure what servos are in there. It'll thump going into 1st right before I come to a complete stop in "D".
That problem exsisted in the 700R4 where the servo needed to be grounded to the bevel inside the servo, (about 3/16ths"). The 4L60E never had this problem. It will be interesting to see what causes this in your trans.
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From: McAllen, Tx.
I'll keep you posted as soon as my tuner hooks up the lappy!
