- Buick Ownership
- 1980 regal
Good morning all! I have a 1980 regal 3.8l that suddenly is idling rough when in park. It doesn't stall when driving but in park if I let off the gas it's 50/50 it's stalls. I have checked and replaced hoses, changed air filter, pcv, and cleaned the carb. Also when I turn the heater on it idles much better and does not stall. Any insight and suggestions are greatly appreciated.