Bought a Scion Xa 2006 automatic, 115,000 miles. The car had a weird vibration which was new to me. Later when I pumped out 3 quarts transmission fluid (very dirty), replaced with T-IV, the vibration (my guess - shutter) went away. The tranny began to slip a little only in the morning, only in lower gears. Dropped pan, changed filter, new T-IV, added 7 ounces Lucas Transmission Fix, no shutter but still slips and started to whine. Dumped the pan again, T-IV, added a little Lubeguard Highly Friction Modified. Tranny shifts much better, very little whine, still slips a little in the morning. Should I add some more Lubeguard?
well you already started putting in additives, so it doesn't matter if you add more. The tranny is probably on its last legs.
Hi, Mountainmanjoe. Thanks for your help. The tranny shifts much better and you can barely hear the whine. I guess I'm a borderline mad scientist. When I changed the ATF, the shutter went away, but the tranny started to slip and whine. So the dirty ATF acted as clutch material in my worn out transmission. By adding more Lubeguard Highly Friction Modified, will the slip and whine continue to go away? Or will the shutter return? Am I going in the right direction? Or is this uncharted territory?
I would start looking for a new car or transmission
The transmission whines going forward and slips when changing from second to third. Reverse works normal. Question: would repairing only the forward assembly drum fix this transmission?
No, you don't just replace a drum. You replace or rebuild the transmission.