I HAVE A 1993 MERCURY COUGAR WITH A 3.8 ENGINE. IT HAS AN IDLING
PROBLEM. IT ALMOST WILL GO DEAD WHEN IDLING. WHEN YOU PUT IN GEAR
IT WILL GO DEAD UNLESS YOU MASH DOWN ON THE GAS PEDAL. IT GETS
WORSE WHEN THE ENGINE REACHES OPERATING TEMPERATURE. IT WILL
CHANGE SOME WHAT TO THE BETTER WHEN YOU UNPLUG THE MAS-
AIRFLOW HOOKUP BUT WILL STILL GO DEAD WHEN PUTTING IT IN GEAR.
have you replaced or changed anything? check your idle air control valve could be clogged
No sir I haven't replaced anything as yet
could be time for a tune-up might not be firing properly on all cylinders assuming you haven't has a tune up
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