Just to clarify. When you say this, you mean the PCM? I have no way to check the codes in the TCM, only PCM. The first time the guy from the Transmission shop hooked up the computer to the TCM, he told me (when I dropped it off) that there were no codes in the TCM but he'd go through the electrical system. It was in limp mode and driven about 20 minutes to his shop in 2nd gear from when I cleared the codes last.
After he 'cleared the codes' he told me that the PCM 0700 code came back (with 20 minutes of driving), and he checked the TCM code and got the 4th Gear Ratio Error code.
If I get her back from him (Probably Monday) and Unplug the battery for 20 min or so, hook the battery back up, I should check codes (KOEO), then start car (without moving gear shifter) and if the CIL comes on, and the PCM is giving me P0700 without engaging transmission or driving, then it would indicate a bad TCM?
I guess what I'm wondering here is if I clear the codes (disconnecting battery) and start the van and instantly codes come back without moving, is that normal? Shouldn't the car have to be driven, for something to be out of spec or out of range for the TCM to find out and tell the PCM to give a P0700? I was thinking that for the Van to give a P0700 (PCM code) it really would need the TCM to see something was wrong. Can a TCM see something wrong without it even being driven or engaged?
I'm leaning towards the TCM being bad based on the cleared codes coming back the moment the vehicle is started. Is that safe thinking?
I REALLY appreciate all the help. I feel like I'm close to getting this nailed down, I just want to make sure before I drop $200 on a TCM, that my thinking is sound based on how it's supposed to work under normal conditions.
As far as not trusting the guy, I used to be in sales. Very deeply. I just feel like he's pitching, price shielding me, and doing various other sales techniques, and I just want my car fixed, not sold on something.
When he first hooked the computer up, he was pushing buttons and at one point flashed past a screen that I saw the word "CRANK" on it. The screen after that told him the car wasn't in limp mode and he kinda waved it in my face to say "it's not in limp mode, you're actually STUCK in 2nd gear -oooo bad. When I questioned him on the screen I saw very briefly, he went back, cranked the key forward, redid his test, and all of the sudden it was in limp mode on his computer. His credibility kinda went down hill for me there. Also considering the P0700 came back INSTANTLY without driving it in my driveway, where he states he had to drive it for 20 minutes to get it to come back. Just feeling sour about him is all.
Monday, February 4th, 2019 AT 4:09 PM