MustangWorks.com : Ford Forums - View Single Post - Weird idle problems Idle’s fine but running ruff

Tony91LX · 10-08-2001, 07:06 AM

At idle, when you blip the throttle (800 – 1200 rpm) , I get a hesitation and a sucking sound, even a lean pop every once in a while. The motor stared to running really ruff at idle after I replaced the coil, MAF sensor, TFI module, and did a rocker arm adjustment.

Could I have a vacuum leak, or a timing problem ? It only seems to do this at idle and gets a little better as the car warms.

I am going to change the plugs and wires tonight, its been a while.

10-08-2001, 07:06 AM	#1
Tony91LX Registered Member Join Date: Jan 2000 Location: Feeding Hills, MA Posts: 114	Weird idle problems Idle’s fine but running ruff At idle, when you blip the throttle (800 – 1200 rpm) , I get a hesitation and a sucking sound, even a lean pop every once in a while. The motor stared to running really ruff at idle after I replaced the coil, MAF sensor, TFI module, and did a rocker arm adjustment. Could I have a vacuum leak, or a timing problem ? It only seems to do this at idle and gets a little better as the car warms. I am going to change the plugs and wires tonight, its been a while.