I have an 84 318i coupe, 5spd manual w/m10. I have a couple of problems. 1) My temp gauge isn't working
2) It idles high, about 1800-2200rpm, no matter the temp outside
I cleaned and checked the ICV it works. I also replaced all hoses except 1. My mechanic friend thinks problems could be LINKED. He thought it could be thermo time switch. The previous owner did swap speedos though Sooo maybe 2 separate prob.????