So, we had a number of storms from Thursday night through yesterday. After working from home on Friday, not venturing out Saturday, taking the VW skiing on Sunday, I didn't start the RRC for a few days. Went out to clear it off and warm it up on Monday morning an no start. Turned over fine, but it wouldn't fire. I checked the fault code and got 19, which was TPS signal high or MAF signal low.
Well, I have a parts RRC, so I grabbed the TPS from it and plugged it in. Still nothing. So frustrated, I cleaned up and took the VW to work. Did a bunch of research. The two possible scenarios were either frustration (wiring issue somewhere, which would be fun to find) or big-time dollars (TPS is no longer made, kit that converts a readily available alterative is $350, MAF sensor is $250). Ugh.
Yesterday my wife was sick, so I stayed home to get some work in and hang out with the kids on their third-straight snow-day. When they went out to play in the snow, I started troubleshooting. Checked the original TPS with a multi-meter and resistance seemed to be fine. Found some cracked/broken wire insulation and a lot of oil/dirt. So I degreased it and patched up the insulation as best I could. I also went out and tried troubleshooting per the shop manual. I started getting fault 17 (TPS) instead of 19 with the swapped unit.
Long-story short, I'm not sure what I did, but I eventually got it running. It was stuck in limp mode, essentially rev-limited at 1500 RPM, which I've read can happen with a bad TPS. So I swapped the original one back in post-repairs and it started right up, wasn't in limp mode, and appears to be running much better. So I'm guessing that TPS has some lingering issues throughout its range, but by addressing the exposed wire, I was able to get rid of a short or it grounding out and it's running now. So, I'm going to go back and try to clean and test the TPS from the parts rig and see if it's OK, and decide where to go from there.
It's also developed a bit of a rattle in one of the cats, so I have that to look forward to.
That said, the dumb thing still puts a smile on my face every time I look at it. I'm looking forward to getting color on it next spring. I've settled on Eastnor Green as opposed the Ardenness Green on it now. It's a similar color, but non-metallic which gives me a fighting chance of getting a decent 10' paint job on it, especially if I decide to paint it piece-meal as I pull panels of the parts RRC.
Here's a shot of a 2-door in Eastnor Green... My current inspiration shot.