1994 Mercury Villager Q&A
1994 Mercury Villager Question: What would cause a rough Idle.
The van runs fine and has plenty of power on acceleration. Idles at normal rpm, Idel air control motor is working good, egr valve works good by manual depression. Vacuum is steady at 15 inches of mercury. Inspected spark plugs, no problems found, cleaned rotor, distributor cap and inspected plug wires. No emission codes. It's not to bad in park but is very noticeable and sounds like it's going to die at a stop in drive. Thanks - zmassive
15 inches of vacumm is not acceptable. You don't clean a ignition rotor. When was the last time you changed the plugs? When was the timing belt changed? When was a fuel ignition last performed? - PARTS GUY
Read forums, tried disconnecting MAFS, O2 and TPI sensors. No Luck. I ran concentrated injector cleaner through gas... Worked for 2 weeks! Problem returned.. Tried same treatment... no luck this ti...