1993 Mercury Villager Runs rough after engine warms up

Tiny
CHRISTOPHER4471
  • MEMBER
  • 1993 MERCURY VILLAGER
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 199,000 MILES
The vehicle runs great until it warms up, this is driving or idling in driveway. About 20 minutes. Then it begins to run very rough to the point of barely being driveable. I have replaced, plugs, wires, cleaned that disc in the distrubtor, replaced the engine temp sensor, still does it after it warms, I've yet to even hear the radiator fan kick in because it never gets hot enough to kick it on. I unplugged the MAF, it will barely idle but will run after warm, not even close to driveable though, if I plug it in again it immeditately goes dead. Can't tell if that's related since not a very big difference.
Friday, April 16th, 2010 AT 1:11 PM

2 Replies

Tiny
CHRISTOPHER4471
  • MEMBER
  • 2 POSTS
Doesn't the fact that it operates fine until hitting a certain temperature elimnate some of the components you mention as well as I mentioned I already changed the plugs and wires? I didn't expect an auto-reply to my question. Thank you.
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Saturday, April 17th, 2010 AT 7:34 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Do you have a check engine light on?

Every item I've mentioned here can and will cause your problem when things starts to heat up-You can try the ignition coil and ignition control module be advised this is not an easy fix over the net. Plugs and wires are just the basic stuffs and its out of the way now-we haven't got into the heart of the engine management system, we still got a long way to go-
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Saturday, April 17th, 2010 AT 7:55 AM

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