Engine misfire

2000 MERCURY VILLAGER
76,830 MILES • 3.3L • V6 • 2WD • AUTOMATIC
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PILOTBILL
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  • 86 POSTS
Hello, I have a question for you all. The problem I am having is, at idle the engine misses ever so often. The engine will continually misfire. I have pulled the spark plugs and spark plug wires and could not find anything wrong. The spark plugs are clean and the spark plug wires are within range (checked with OHM meter). The van runs great going down the highway (no miss at all), but once you stop at a stop sign or stop light, the engine with start missing again until you take off. Once you take off, the van runs great. One thing that I have noticed is that if I have the A/C running and I stop at a stop sign or stop light, the van does not miss because the engine is idling faster because of the A/C being on. Please help and thank you.
Jul 13, 2018 at 11:59 AM
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STRAILER
  • AUTOMOTIVE REPAIR CONTRIBUTOR
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Even though the spark plugs look okay and the plug wires test fine they still can cause a misfire. Are they original? I would buy OEM tune up parts and service the throttle bore to start. Here are guides to help you get the job done:

https://www.2carpros.com/articles/throttle-actuator-service

and

https://www.2carpros.com/articles/how-to-tune-up-a-car-engine

Please run down these guides and report back.

Cheers, Ken
Jul 14, 2018 at 6:08 PM
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PILOTBILL
  • MEMBER
  • 86 POSTS
Thank you very much. This coming weekend, I will get started on the van. Thanks again.
Jul 16, 2018 at 2:46 PM
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STRAILER
  • AUTOMOTIVE REPAIR CONTRIBUTOR
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Please let us know what you find. We are interested to see what it is.
Jul 17, 2018 at 11:18 AM