Ok I've read numerous posts and replys and I thought the OVP relay was my problem but now I wonder. When the outside air is cold or just cool my 380 se has high idle(1500 rpm) for the duration of my drive but when the air is warmer like today (75) it doesn't high idle. This is driving me crazy! I had the idle valve replaced but that didn't last long. I thought I read about an idle thermostat possibility. Could that be it? Thoughts appreciated.
1985 380 se 192k