alrighty-- I read up and did my hmwk and so hopefully I won't be wasting anyones time with noobery...
I have a 1997 Jetta with the auto tranny. Not sure if thats an 096 or a 01m but its been shifting like piss for months and I just got a CEL with code P0740 - torque converter clutch solenoid circuit.
I don't have/know anyone with VAGCOM, but before I continue some background:
car was in an accident, and some tranny fluid was lost. I've since checked it and it appears to still be leaking a bit. I'm going to dig into it and fix whatever it is thats bent or broken. I also just did a head gasket job and replaced the head, as it was warped and leaking water into the oil. (at the same time, the water pump, thermostat, and various other items were replaced).
I read that vacuum signature affects these trannies with their adaptive whatever junk, so I did a "reset" of the tranny using the Bentley instructions of holding down the accel. pedal. CEL stayed on and nothing appeared to change.
SO i searched the net and found nothing relevant to my OBD2 code, and so I came here to this thread because frankly I didn't know what else do to.
Tranny was supposedly replaced just before we bought it, but **** all if i know if thats true or not.
In any case -- these are the resistance readings I got from the round plug to the solenoids:
EV-4: 5 ohms
EV-5: 160 ohms
TFT: infinity on x10 scale, between 500 and 100 on x1k scale
it appears to me that either the harness or the solenoid (or both!) are bad -- except ev3, ev4, ev6, and the tft appear to check ok. the ambient air temperature today when I measured was between 90 and 100 degrees all day though, and the ohm readings earlier in this thread were spec at 70-something degrees -- so not sure if my readings are within spec or wayyy out of whack. that's my first question.
my second question is, am I barking up the wrong tree?
my theory is thus:
my brother had his accident
tranny lost fluid
began running like piss
tranny continued losing fluid
result: CEL and terrible shifting.
am I on the right track here folks? help would be appreciated. My next step, assuming you guys think I'm on the right path -- is to replace the filter, fluid, and harness/solenoids. I'm also going to determine if the pan or something else is responsible for the leak.
Modified by xvdubtunerx at 5:13 PM 8-27-2009
Modified by xvdubtunerx at 6:26 PM 8-27-2009