TPS causing idle oscillation 85 318i saga
that was my first guess, i tested the TPS with a DMM and it works properly, it's set at the end of the slot to be closed when the throttle is closed. I can check the connection at the ECU end connector to make sure its getting a clean signal, i doubt the ECU is bad.
Its also running hot. I replaced the thermostat with a T-connector, the temp still reads 3/4 on temp gauge. I pulled the radiator and flushed it and water seems to flow through it fine, the auxiliary fan circuit works, no hoses are leaking. Any ideas? the water pump looks like it has been recently replaced i think thats ok.