How does the thermal one work? Just runs the little motor until it hits something, stalls, overheats and turns itself off until it’s disengaged? Or is it some other electrical sorcery?
I did it and it’s super easy once you get the right trick, I just can’t remember what the trick was. Sorry. The hardest part for me was getting to the 15mm nuts without removing the steering column. I found a tiny 3/8 clickless ratchet at Northern Tool that did the trick. Factory nuts have blue Loctite on them. Maybe an air ratchet could help - I didn’t use one. The job CAN be done without taking the brake lines off, but you’re going to feel like you’re about to break something bowing the master cylinder out of the way.
Did you check your blinker fluid level? Seriously, did this problem just develop? Fast blinker usually means bulb burnt out, and will also happen if you replace it with a LED bulb. Don’t know about the steady light - need to check and see what mine does.
Go to the GMT400 forum and find user PlayingWithTBI
Something about grounding a pin on the OBD connector, but I can’t find my bookmark.
If I’m understanding your description as popcorn being random and not evenly timed, I recently developed something similar on my 95 350 TBI. Mine seems to happen only when engine is warm, AC is on, and in Drive with the brakes on (at a traffic light for instance). It stumbles just briefly but randomly (like popcorn?). I was thinking something with the Idle Air Control (IAC)? Suggestions appreciated.
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