Transmission HELP
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On The Tree
Joined: Mar 2008
Posts: 190
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From: Fort Worth , TX
Transmission HELP I have a 2001 Z28 with a 4L60 E. Today on my way to work I had some type of transmission problem . Less than a mile from my house my car was driving fine then when it was about to shift it didn't .... The rpms just rose and it was like being in neutral. I pulled over immediately and still can not figure out what the problem could be. In every gear 1,2,D,OD and even R just acts as if the car is in N. Car does not move at all and the RPM's just rev freely. There is no noise or leak anywhere. Motor seems completely fine it just will not engage in any gear. What could be the possible problem ? Is the transmission completely gone ?
The car is a bolt on car with all stock internals and has a stall and stock 2.73 gears. Car was running just fine the day before and I was surprisingly not even accelerating quickly when the problem occurred at about 30 mph. Any advice or suggestions would be appreciated. Thanks
The car is a bolt on car with all stock internals and has a stall and stock 2.73 gears. Car was running just fine the day before and I was surprisingly not even accelerating quickly when the problem occurred at about 30 mph. Any advice or suggestions would be appreciated. Thanks
If it has fluid in it and the shift linkage works, then you're asking for a guess.
It's going to have to be taken apart to find the problem.
Sure you can pull cooler lines and change the filter, but you're just wasting time IMO.
It's going to have to be taken apart to find the problem.
Sure you can pull cooler lines and change the filter, but you're just wasting time IMO.
Thread Starter
On The Tree
Joined: Mar 2008
Posts: 190
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From: Fort Worth , TX
I checked the fluid. It appeared to be at about the right level and not very unusual in color from when I normally check it .... The stall is a 3400 PTC. What happened to yours when this happened ?
On The Tree
Joined: Nov 2010
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From: WV
my sis's cavalier did this. not sure, but im guessin a cooler line clogged up or maybe the shift module thing clogged. we never flushed the trans or anything, it prolly had about 160k on it. we sold it to a neighbor and they dropped a new trans in it and it works fine now. does ur car move any at all, like any little movement at all
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On The Tree
Joined: Nov 2010
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From: WV
not even a nudge, huh? well my sis's just barely would nudge like it's an old granny tryin to do pullups. then it just quit like its in N to. im not into automatics, but if you know how, you'll prolly have to tear it apart to find outs wats wrong. might be stripped out gears, hopefully not. did you ever flush the trans before?
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Verdad Gallardo My 1-2 solenoid went and I quickly fixed it, but your problem sounds more mysterious. It could be a number of things, like the pump shot, or converter fried. Do you have a temp gauge for the tranny? If not, it could've built a lot of heat without you knowing. I hate to hear this happen to you.
Sounds like a broken pump or an input shaft/drum if I had to guess. As Jay said it will need to come out to determine the issue with the trans. Make sure before pulling the trans that you did not break the rear end. I have seen this happen in the past and be confused with a trans issue. Vince
Thread Starter
On The Tree
Joined: Mar 2008
Posts: 190
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From: Fort Worth , TX
No I don't have a temp. gauge for the transmission but at least on this occasion there was not too much heat being built up because I had only driven less than a mile. I hadn't thought of the rear end possibility but I am assuming it is fine because of how easily me and a friend were able to push it around and no noise coming from it after I towed it to his shop.
Thanks for all the possible hints so far guys and keep it coming.
Thanks for all the possible hints so far guys and keep it coming.
Thread Starter
On The Tree
Joined: Mar 2008
Posts: 190
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From: Fort Worth , TX
I have it sitting at a friends shop right now and we are still not sure of what it could be yet. Haven't had a chance to completely remove it yet but everything seems completely fine .... Took off starter and the converter is still bolted up fine. Thought that could have been a problem since I have broken a flex plate before but nope. All connections and cables seem fine and so does the fluid. My friends Grandpa said the only thing he thinks it could be is the output shaft .... Does anybody on here have experience with a converter going out ? This is my first stall and I am not sure if that may be the problem here ....
On The Tree
Joined: Jun 2007
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From: haltom city/DFW, Texas
No movement at all could be a lot of things , one thing you can check is pump function . With the engine off , pull the dipstick and mark the fluid level . Start the engine and pull the stick , if the pump is working the level will drop on the stick when the pump picks up fluid . Or you can disconect a cooler line and start it to check pump function . This is messy so I prefer the first method .
If you have no pump function it could have broke a pump rotor , you have already checked the converter bolts but you could have a broken flex plate . This will usually make a bunch of noise and you didn't mention noise .
The next thing will be to pull the trans and converter and inspect them .
If you have any other questions you can call me at 817-281-9230 John
If you have no pump function it could have broke a pump rotor , you have already checked the converter bolts but you could have a broken flex plate . This will usually make a bunch of noise and you didn't mention noise .
The next thing will be to pull the trans and converter and inspect them .
If you have any other questions you can call me at 817-281-9230 John
No movement at all could be a lot of things , one thing you can check is pump function . With the engine off , pull the dipstick and mark the fluid level . Start the engine and pull the stick , if the pump is working the level will drop on the stick when the pump picks up fluid . Or you can disconect a cooler line and start it to check pump function . This is messy so I prefer the first method .
If you have no pump function it could have broke a pump rotor , you have already checked the converter bolts but you could have a broken flex plate . This will usually make a bunch of noise and you didn't mention noise .
The next thing will be to pull the trans and converter and inspect them .
If you have any other questions you can call me at 817-281-9230 John
If you have no pump function it could have broke a pump rotor , you have already checked the converter bolts but you could have a broken flex plate . This will usually make a bunch of noise and you didn't mention noise .
The next thing will be to pull the trans and converter and inspect them .
If you have any other questions you can call me at 817-281-9230 John
Teching In
Joined: Jan 2011
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Yes as long as the rest of the trany is in good shape. If you know a good trany guy that would help. Most shops I know of, wouldnt touch it with out a complete overhaul. I work a lot with the car clubs in this area and I have done that very same repair with out an overhaul.
If you are sure it is the pump, you can do this your self. It is rather easy to do.
If you are sure it is the pump, you can do this your self. It is rather easy to do.