When starting out in morning and only when temp is cold (below 30 F, say) and just before the engine has fully warmed up (after 3 miles or more driving) the engine suddenly runs rough and quits AND the gas petal freezes in place. A hard foot jab to the gas petal releases it and I can immediately restart the engine and car has no more problem thereafter while driving. This ALWAYS happens on each cold day. On the other hand if the car is first allowed to warm up in the driveway it NEVER happens (engine does not quit on warmup or when driven thereafter). Any clues? (Bought new 1995, 48,000 miles).
Alex