Transmission Slips in Reverse

DeCeder · 08-07-2007, 12:57 PM

Hello All,

Just aquired a 1990 Camry, V6 with an automatic transmission that slips in reverse. Don't have any more detail than that.

Questions:
1. Are there any known problems that would explain this condition?
2. Can anyone recommend a diagnostic procedure?

Thanks,
Dave

Doctor J · 08-08-2007, 08:30 AM

Lost of reverse is caused by:
defective overdrive C0 clutch or defective direct clutch.
the first problem is corrected by removal of side transmission cover and changing the C0 clutch pack( the transmission stays in the car) the second problem requres the complete tear down and rebuild.
Many owneres of camrys with 541e transaxle had it repaired at about 130 kmi. These transaxles are too weak for the engine. Making them stronger will overload the front end.

DeCeder · 08-09-2007, 02:09 PM

Thanks Doc.

Is there a chance that a faulty solenoid valve might not allow correct pressure for proper clutch pack engagement

Doctor J · 08-10-2007, 06:04 PM

No, the line pressure is controlled by spring-loaded relief valve.
On 90 model the solenoids are controlling forward gears and converter lock-up

DeCeder · 08-12-2007, 01:49 PM

Thanks again DJ.

You seem quite knowledgeable on the subject.
Do you know if a manual transmission would go into this car without any modifications. I know, of course, that it would need a petal, clucth, possible flywheel change, etc.

Thanks,
Dave

Doctor J · 08-12-2007, 04:53 PM

Some forum members did the swap, but I do not know details.