Tranny
Tranny Simple took my driveshaft out my 4l60e started the car and put it in reverse . Got under the car to see if the shaft was moving & it was not moving . It moves in drive but not reverse . Just had this tranny rebuilt and installed a brand new PTC 3200 stall any solutions to why no movement in reverse !!!!!!!!!
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Joined: Aug 2010
Posts: 7,323
Likes: 529
From: Ann Arbor, MI
I'm confused what this has to do with removing the driveshaft. If the driveshaft is out it will leak oil like crazy. Sorry, but the first sentence makes no sense and might be why "43 looks and no suggestions".
So, assuming you have the driveshaft back in, the oil level is good, the tranny was just rebuilt and you have no reverse...
Then it is possible that the rebuilder busted the stator shaft's teflon seals as the pump was installed. There are many threads here on "No reverse" which you might help you too. But assuming the oil level is good, I think the rebuild went wrong. A good trans shop should be able to air test it without removing the trans; a "test" separator plate makes this easy to test.
So, assuming you have the driveshaft back in, the oil level is good, the tranny was just rebuilt and you have no reverse...
Then it is possible that the rebuilder busted the stator shaft's teflon seals as the pump was installed. There are many threads here on "No reverse" which you might help you too. But assuming the oil level is good, I think the rebuild went wrong. A good trans shop should be able to air test it without removing the trans; a "test" separator plate makes this easy to test.
I'm confused what this has to do with removing the driveshaft. If the driveshaft is out it will leak oil like crazy. Sorry, but the first sentence makes no sense and might be why "43 looks and no suggestions".
So, assuming you have the driveshaft back in, the oil level is good, the tranny was just rebuilt and you have no reverse...
Then it is possible that the rebuilder busted the stator shaft's teflon seals as the pump was installed. There are many threads here on "No reverse" which you might help you too. But assuming the oil level is good, I think the rebuild went wrong. A good trans shop should be able to air test it without removing the trans; a "test" separator plate makes this easy to test.
So, assuming you have the driveshaft back in, the oil level is good, the tranny was just rebuilt and you have no reverse...
Then it is possible that the rebuilder busted the stator shaft's teflon seals as the pump was installed. There are many threads here on "No reverse" which you might help you too. But assuming the oil level is good, I think the rebuild went wrong. A good trans shop should be able to air test it without removing the trans; a "test" separator plate makes this easy to test.
Moderator
Joined: Aug 2010
Posts: 7,323
Likes: 529
From: Ann Arbor, MI
Either the line pressure is too low or something in the reverse hydraulics has a major leak. A trans shop can check the line pressure very easily. Low pressure for reverse could be caused by incorrectly installing the "Reverse Boost Valve" which would be a simple fix. I would suggest getting advice from a local trans shop or the original builder; this sounds like the builder's responsibility to me.
The fact that it stops the minute you let off the throttle would to me indicate the 2-4 band is either applied or to tight . Does the car seem to take off in first or if your in manual 1 feel like the brake is applied also or act like reverse?
__________________
Tranny At first we thought it was the calipers sticking because when you put it in drive and let of the break it would sit their and eventually it would try to crawl off but in reverse no movement and when you apply pressure to the pedal it would move but as soon as you let of the pedal it would stop instantly. Now that's in reverse so that's why I took the drive shaft loose from the rear end to see if maybe something was binding in the rear but with no drive shaft in the tranny it stills doesn't spin in reverse ..... Thanks alot guys !!!!
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Moderator
Joined: Aug 2010
Posts: 7,323
Likes: 529
From: Ann Arbor, MI
Good call by Performabuilt (an expert, unlike me); I missed your "instantly stops" symptom.
If you drop the pan, the band is visible and you should be able to "wiggle" it back and forth a bit with a screwdriver; else it is too tight. If too tight, remove the servo and confirm the band is then loose. Then figure out why the servo is over-tightening it. The main servo shaft is available in longer lengths and the builder may have put a too-long one in. Also, if the Transgo HD2 kit was used - it comes with shims to tighten the servo; perhaps too many were used.
In any case, with the trans in Neutral, you should be able to turn the driveshaft by hand. It will be harder in one direction (reverse?) than forward, but the band should not be dragging.
If you drop the pan, the band is visible and you should be able to "wiggle" it back and forth a bit with a screwdriver; else it is too tight. If too tight, remove the servo and confirm the band is then loose. Then figure out why the servo is over-tightening it. The main servo shaft is available in longer lengths and the builder may have put a too-long one in. Also, if the Transgo HD2 kit was used - it comes with shims to tighten the servo; perhaps too many were used.
In any case, with the trans in Neutral, you should be able to turn the driveshaft by hand. It will be harder in one direction (reverse?) than forward, but the band should not be dragging.
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Verdad Gallardo Good call by Performabuilt (an expert, unlike me); I missed your "instantly stops" symptom.
If you drop the pan, the band is visible and you should be able to "wiggle" it back and forth a bit with a screwdriver; else it is too tight. If too tight, remove the servo and confirm the band is then loose. Then figure out why the servo is over-tightening it. The main servo shaft is available in longer lengths and the builder may have put a too-long one in. Also, if the Transgo HD2 kit was used - it comes with shims to tighten the servo; perhaps too many were used.
In any case, with the trans in Neutral, you should be able to turn the driveshaft by hand. It will be harder in one direction (reverse?) than forward, but the band should not be dragging.
If you drop the pan, the band is visible and you should be able to "wiggle" it back and forth a bit with a screwdriver; else it is too tight. If too tight, remove the servo and confirm the band is then loose. Then figure out why the servo is over-tightening it. The main servo shaft is available in longer lengths and the builder may have put a too-long one in. Also, if the Transgo HD2 kit was used - it comes with shims to tighten the servo; perhaps too many were used.
In any case, with the trans in Neutral, you should be able to turn the driveshaft by hand. It will be harder in one direction (reverse?) than forward, but the band should not be dragging.