Transmission not shifting into 4th
Thread Starter
Teching In
Joined: Jul 2011
Posts: 47
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From: Mishawaka IN
Transmission not shifting into 4th I have a 2000 Trans Am A4 that just today stopped shifting into fourth gear. I am 2 hours away from home and I am wondering what it could be and also is it safe for me to drive it? It just revs up higher and higher, It isn't beaten on and has had a Transmission flush in the last 9 months. Thanks, Sid.
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Joined: Aug 2010
Posts: 7,323
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From: Ann Arbor, MI
If both 2nd and 3rd gear feel strong without slipping, then a possible (most likely?) cause is a leak in your 4th gear servo. I'm no trans expert, but I think you are OK to drive it, just leave the selector in D3. If you feel slippage in 2nd or 3rd, then you have other problems.
Assuming it is the 4th gear servo, this can be replaced without even removing the trans. (Its under the round cover on the passenger side.) I understand it can be a bitch to get out in your model car, but a trans shop should have no trouble with it on a hoist.
Assuming it is the 4th gear servo, this can be replaced without even removing the trans. (Its under the round cover on the passenger side.) I understand it can be a bitch to get out in your model car, but a trans shop should have no trouble with it on a hoist.
Moderator
Joined: Aug 2010
Posts: 7,323
Likes: 529
From: Ann Arbor, MI
Or the 4th gear servo piston is cracked, or more likely, has a badly worn seal which works some days and not others.
