Replacing wire on sparkplug, need advice.

[Kate Andreozzi]

I've got a 2004 Mustang. Check engine light came on and the code indicated a misfire to cylinder 3. Had a mechanic check it out and he said the wire on the sparkplug that connect to the coil was melted. He wanted to charge $450 to replace it. Outrageous! So I'm going to do it myself.

Does anyone have step-by-step directions on how to do this? Any suggestions or advice? Thanks for any help.

 

[scott degroot]

6 or 8 cylinder?

 

[Vic Sorlie]

Search YouTube for DIY videos. If original plugs and wires, replace all. Driver's side engine bank should be accessible; Psgr side may be more difficult - on two former V6 Tracs I had it was easiest to get to psgr side plugs by removing RF wheel and going through the wheelwell. 3/8" ratchet, couple of extensions and spark plug socket are basic tools you'll need. As l1tech asks, V6 or V8?

 

[EddieS'04]

If this is coil on plug. you say the wire to the coil melted. I would strip the tape back far enough into the harness. Need to make sure the melting cause, is not a short between wires. Splice new wire and jack from a good spot.

 

[Kate Andreozzi]

It's a V6 and the spark plugs were replaced just a couple years ago. I was only going to replace the wiring on the one that melted and see what happens.

 

[Vic Sorlie]

Two V6 engines on this year 'Stang, but neither has coil-on plug. I doubt that you'll be able to find just one spark plug wire; they're normally purchased as a full set. RockAuto shows a single wire available, but the shipping would be as much or more, plus you've got to wait for it. O'Reilly website shows Motorcraft set for $45. NAPA will have good choices too. You can find a cheaper sets, but quality parts always cost less in the long run. Let us know.