Question about 1998 Mercury Villager

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My coil keeps going bad. One of the plug wires turns green like corrosion. I put a new one in & it lasts a week or so.

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Replace the ignition module to fix your problem

Posted on May 22, 2011


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1 Answer

Cylinder 3 misfiring on a 97 gmc jimmy 4wd. Did a tune up about 2 months ago (ignition, wires, coil, spark plugs), replaced fuel pump last week, used fuel injector cleaner, still no luck...any ideas?

go back and check all the plugs, wires and the total tune up. check your firing order, and timing. put a timing lite on the plug wires and if the plug is bad it will show with the light. lol.

Oct 05, 2015 | GMC Cars & Trucks

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The #1 plug is not firing. It does not seem to be getting fire, if I move the plug to a different cylinder it fires. Any plug I install in the #1 cylinder does not fire.

Most likely the coil for that cylinder is bad. Unfortunately, you can't just replace a single coil - the entire coil pack is a sealed unit.


Jul 02, 2015 | 2010 Chevrolet Chevrolet Aveo LT

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Why does my 1997 Toyota 4runners 3.4 5VZ-FE # 3 coil keep going bad every 6-7 months & rest are fine ?

location no doubt it gets more manifold heat than the others see if a temporary heat shield does any good

Apr 01, 2015 | 1997 Toyota 4Runner

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Fix a problem with not starting when car is hot i still turns over

not starting when hot indicates an electrical problem that comes from a component breaking down when hot.
Items that fall into this category are coils,coil packs, injector controls,injectors, ignition modules and fuel vaporization ( low fuel pressure from failing fuel pump/relay
I would leave the pump as an absolute last but would be looking at coil or ignition module. have you run the fault codes to check for other sensor problems such as cam/crank position sensors or immobiliser problems. All subject to heat affected problems.

Feb 07, 2015 | Cars & Trucks

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My 2005 lincoln Ls check engine light and wrench light comes on. the first time - a ford tech. changed a spark plug& wire. the second time a different spark plug & wire. third time another spark...

I have the same problem. My Lincoln Ls wrench light comes on and it quits. All spark plugs, all coils and the throttle body has been replaced. I think the LS model is a lemon! Any information or suggestions will be appreciated.
Thanks, Betty

Mar 12, 2010 | 2005 Lincoln LS

1 Answer

My truck won't start, it turns over but doesn't spark

First check the ignition fuse (under the dash) if it is blown that indicates a short or excessive resistance (read... corrosion) in the wiring or a bad ground (again on a vehicle that old, probably corrosion)... If fuse is good use a meter or test light to check for power at the coil positive terminal...if this is good look at high tension side (Coil wire to distributor , under cap, rotor, plug wires) if no power to coil (or intermittent with "wiggling wires") then start removing wires from coil terminals (one at a time to keep track!) and cleaning them till they are bright, then replacing them... also check the ground straps (from engine or trans to battery negative terminal and from body to battery negative)... if the problem IS corrosion this should help.. another possibility is is a weak coil, if all of the above fails try another coil... hope this helps... ;-)

Apr 17, 2009 | 1988 Dodge Dakota

1 Answer

I have a 94 cherokee coutry w/inline 6. When I

First place to look is in the wires from the battery to the starter and the battery to the ground... got corrosion? this can really choke off the flow of electricity to the vehicle... check both ends of the starter cable and the ground from battery to frame (or block or trans) any kind of green or white deposits indicate it's time for new ones... this can be tricky because the corrosion can be inside the insulation on the wires... if corrosion is bad enough even a jump won't start the vehicle as not enough voltage will reach the coil... if the wires are good then it's time to check the coil and it's wiring... if you aren't real savvy at testing components with a meter then replace the coil (assuming good wiring) and test for spark by holding coil wire about 1/4inch from the block or any good ground while turning engine... you should see a nice blue spark... hope this helps...;-)

Apr 15, 2009 | 1994 Jeep Grand Cherokee

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