markification

Just wanted to update I checked for ac voltage at the batteries and at the 140 amp fuse, the highest it showed was .026, one thing I have found is when the engine is off the throttle position reading on my scanner is steady when the engine is running it jumps up and down slightly, it showed the same result with the serpentine belt on and off.

Just tryed the 140 amp fuse test myself and the second the torque converter locked the computer threw the check gauges light and the voltage dropped like a rock so I pulled over real quick, After I hooked it back up the voltage was ok the batteries had not drained Going to try again later and ignore the stupid light and gauge.

Not extremely long 10-15 minutes driving at most, turn off everything electrical try not to use the brakes (brakelights) I once drove a car with no alternator belt for a half an hour (emergency situation) I had to recharge the battery to get it start once I put a belt on it. But I would not recommend driving for that long.

I did read the part on bad diodes in the alternator causing a/c voltage leaks into the system but I have read stories (on CF) of people replacing the alternator more than once with still the same problem, I like to look for fixes that no else has tried because we have not found the magic bullet yet. Right now I suspect that even though the alternator field circuit (from the ecu) is not tied into the A/c generator circuit, the generator's a/c electrical field could be inducing voltage or RF noise into the field circuit. Over time the ecu becomes more likely to be affected by interference due to heat cycling and ground connection degradation. If I completely disconnect the interference from the ecu it may stop affecting it. Or at least that is my theory. I would like to say mopar1973man is pretty cool for giving out all the advise that he does:thumbup2: and the people here seem to be pretty smart, I am a technician and this is the type of problem that causes me to loose sleep. I think we are close to the solution and if I find it I plan on sharing it as much as possible.

I just found this forum from CF, I am trying to solve the TC unlock issue with out doing all the band aid tricks- foil, extra grounds, wiring gadgets, re-wiring, Etc. My truck has the 45-50 tc unlock issue and the 4th gear hunt.I started by cleaning the battery terminals and the grounds on the alternator. The best solution I have seen so far is the conversion to a 1 wire alternator, the guy who tried it took of all of his band aid tricks and the problem did not come back, the theory is the voltage regulator in the pcm is interfering with the apps circuitry.Since I don't have 300 for a new alternator I want to try to install a external voltage regulator. I saw a thread on here about how to install one in a first gen when the VR in the PCM fails. Has anybody installed one and had success with the TC lock issue, AND/OR the 4th gear hunt?