Has anyone experienced arcing plug wires that look like light rope!!?? Opened my hood the other night, service light under hood is out, several of my plug wires looked as if you could see current running thru them! I kid not!! When I moved them around they would begin "flowing" like light rope... Recently I had a mishap with a large deer! It has been running rough since! The plug wires are only 3 months old! Are they just really cheap wires or do I have some weird elec problem? Incidently the batt keeps going dead when it sits for a week. Check engine light is on of course!!! HELP......

170

Asked by Mar 29, 2015 at 04:06 AM about the 1997 Jeep Grand Cherokee Orvis 4WD

Question type: Maintenance & Repair

The alternator and battery check good,had a complete tune up 3
mths ago.....

3 Answers

123,965

Yes I call that spark jump. It's manly caused by old, bad or cheap wires. On foggy damp nights they really put on a light show. Replace your wires with a better quality wire.

1 people found this helpful.
118,365

Dandyoun is right, cheap wires, replace them with a good quality set. That kind of stray voltage can cause the check engine light to come on and set unviable codes. The battery drain is something altogether different, have you performed a battery draw test yet? There could be something still on when the ignition is off, light a glove box light or stuck brake lights etc. it could also be a bad diode in the alternator, that won't show up on a normal output test.

1 people found this helpful.
170

Thanks tennishoes I'll gét higher quality wires! I did have batt draw tested , checked out but it was at the same shop that put on the wires , go figure!!.....

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