722.6 Gurus - New conductor plate needed?
Hello all!
I am a bit stumped with a transmission issue I am having. Trying to give as much background info as I can (sorry, this may be long):
- last Wednesday picked up the car from installing a Remus exhaust. Everything was fine until I stopped at a buddy's shop. Had the car idle in park for maybe 10 minutes. Then shifted into D, but gear would not engage at all. Shifted through the gears, neutral, reverse, park, etc. - nothing. After doing this a few more times, finally car went into gear, I backed out, drove off, all was good.
- Drove the car every day, no issues at all
- Saturday morning I figured I'll do a transmission fluid and filter change, and change the 13-pin plug adapter as well. No problem, done it many times between all my cars with 722.6. Once I had enough fluid in there to start the car and run it through the gears, same thing happened - no gear engaged. Added some more fluid, figured might be the problem, but no, same thing, and it had definitely enough fluid now. Turned the car off, restarted, gears engaged, all was good. Topped the fluid off, all is well, aside from the fact that sometimes it took a second for the starter to start spinning, sometimes it started cranking right away, but then stopped for a moment and cranked again until the engine started. Seemed odd.
- Cleaned up the shop, went on my way home. Car is stuck in 2nd gear! Weird! Oh, duh, I think - I never disconnected the battery before changing the plug. No problem, I'll reset codes in the morning, all will be fine.
- This morning, I read the codes, and see more than I should have. Cleared all codes, went for a drive, and now I am stuck in first gear! Even more weird! Cleared codes again, nope, same thing, stuck in first. Drove to the shop at 25mph (it's not far) to get it on the lift and recheck the plug and so on.
All seemed well. So I dug deeper. Went through the troubleshooting steps, up to the TCM/EGS connectors, all values to spec, no issues, but the codes still come back the moment I start the engine. Same ones as attached. I found when I remove the connector adapter, and connect directly to the pins for the modulator pressure regulating solenoid valve, I have about 5.6Ohm, which would be in spec for 4-8Ohms, but if I push the pins a bit to the left, I essentially get a short (0.5Ohm) between those pins. Odd! Other values don't seem to be affected, and e.g. I get a in-range reading for the temp sensor when the shifter is not in P or N at the plug as well as the TCM/EGS, yet STAR doesn't show me a temperature reading!
Something seems odd. As I mentioned, I can clear the codes, but they come right back after engine start. I no longer have the weird cranking for whatever reason. I checked all wiring everywhere, even cut back the fiberglass insulated loom from the 13pin plug to the firewall and made sure all wired are well. I even put the old connector adapter back, but no difference.
Driving home, I was stuck in second gear again. At least that. No longer 25mph screaming
So, at this point, I am thinking it could only be the conductor plate that gave up the ghost for whatever reason, but before I drain the brand new, expensive fluid to change that, I wanted to check for some opinions here. Any other ideas anyone? I attached the codes that keep coming back.
I really really appreciate any help! I am kind of at my wits end! Thanks already in advance,
--Zax
Hello all!
I am a bit stumped with a transmission issue I am having. Trying to give as much background info as I can (sorry, this may be long):
- last Wednesday picked up the car from installing a Remus exhaust. Everything was fine until I stopped at a buddy's shop. Had the car idle in park for maybe 10 minutes. Then shifted into D, but gear would not engage at all. Shifted through the gears, neutral, reverse, park, etc. - nothing. After doing this a few more times, finally car went into gear, I backed out, drove off, all was good.
- Drove the car every day, no issues at all
- Saturday morning I figured I'll do a transmission fluid and filter change, and change the 13-pin plug adapter as well. No problem, done it many times between all my cars with 722.6. Once I had enough fluid in there to start the car and run it through the gears, same thing happened - no gear engaged. Added some more fluid, figured might be the problem, but no, same thing, and it had definitely enough fluid now. Turned the car off, restarted, gears engaged, all was good. Topped the fluid off, all is well, aside from the fact that sometimes it took a second for the starter to start spinning, sometimes it started cranking right away, but then stopped for a moment and cranked again until the engine started. Seemed odd.
- Cleaned up the shop, went on my way home. Car is stuck in 2nd gear! Weird! Oh, duh, I think - I never disconnected the battery before changing the plug. No problem, I'll reset codes in the morning, all will be fine.
- This morning, I read the codes, and see more than I should have. Cleared all codes, went for a drive, and now I am stuck in first gear! Even more weird! Cleared codes again, nope, same thing, stuck in first. Drove to the shop at 25mph (it's not far) to get it on the lift and recheck the plug and so on.
All seemed well. So I dug deeper. Went through the troubleshooting steps, up to the TCM/EGS connectors, all values to spec, no issues, but the codes still come back the moment I start the engine. Same ones as attached. I found when I remove the connector adapter, and connect directly to the pins for the modulator pressure regulating solenoid valve, I have about 5.6Ohm, which would be in spec for 4-8Ohms, but if I push the pins a bit to the left, I essentially get a short (0.5Ohm) between those pins. Odd! Other values don't seem to be affected, and e.g. I get a in-range reading for the temp sensor when the shifter is not in P or N at the plug as well as the TCM/EGS, yet STAR doesn't show me a temperature reading!
Something seems odd. As I mentioned, I can clear the codes, but they come right back after engine start. I no longer have the weird cranking for whatever reason. I checked all wiring everywhere, even cut back the fiberglass insulated loom from the 13pin plug to the firewall and made sure all wired are well. I even put the old connector adapter back, but no difference.
Driving home, I was stuck in second gear again. At least that. No longer 25mph screaming
So, at this point, I am thinking it could only be the conductor plate that gave up the ghost for whatever reason, but before I drain the brand new, expensive fluid to change that, I wanted to check for some opinions here. Any other ideas anyone? I attached the codes that keep coming back.
I really really appreciate any help! I am kind of at my wits end! Thanks already in advance,
--Zax
