I have a 2002 z28 a4 just rebuilt transmission and the car won't shift to third .
if you take off ill go from first to second with no problems and then from second to third only goes about 2000 rp m's and it'll be like if it's in neutral .
Need help trying fix the problem any idea guys

 

Have you talked to the tranny builder?

 

its brokeded

 

he doesn't want anything to do it says its some type of electrical problem and he only dose the transmission it self

 

then i deff would not take anything to him again, i would bet there is a internal issue.

 

what was the original issue? if the trans had another problem before then i would bet there is an internal problem now. this is the same prob you had before the rebuild he may be right.

 

I have a similar problem with mine but is intermittent and i just keep manually shifting till it finally goes into gear. Someone told me it can be related to the shift selenoids. It could be pressure problem, blockage , bad sensor or even a bad set of clutches.

 

Check for codes, probably a bad solenoid for 3-4 or valve body issues.

 

Being that the "B" solenoid shuts off to make the 2-3 shift I can not see how this would cause a neutral condition. I would however look at an internal leak in the transmission like mentioned here. Does this condition happen in both the OD and D3 position? Also when the trans makes the 1-2 shift where is the shifter or are you manually shifting? Does your speedometer work?

 

when mine did that the sun shell was busted, 3,4 clutches fried and other problems, its was ugly

 

The transmission was repaired? What was the problem? I have the same problem on my 1999 Corvette