COP Question
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COP Question
Just bought a code scanner for driveway trouble shooting and to indentify the all to common misfire due to the notorious COP failure. For insurance I want to buy an extra COP and leave it in the glove box. I have already replaced four COPS and they seem to go at the most inopertune times such as towing my travel trailer. Just not enough get up and go on seven cylinders. Anyway cutting to the chase, I've seen various COPS from the online parts places varying in price from about $25 for a Motorcraft and $60 for an AC Delco with Napa in the middle around $40. Is there a significant difference between the cheaper ones and the more expensive ones.
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Had the 1997 Expy for 3 years now, had just under 60k on the clock when I bought it. Put on 30K and 4 COPS, 2 on number 4, 1 on number 3, and I forgot what other one. It seems it always strikes when I have a road trip planned.
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From: Davie, FL
Originally Posted by TWS
I feel like a nerd, but I own an 05 Epy and I don't know what a COPS is. Could you enlighten me please. You can stop laughing now. Why do they keep failing?
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COP is shorthand for Coil-On-Plug. Back in the good/bad old days an automobile engine used one coil to provide power to all spark plugs. Many manufacturers, including Ford (on some engines) have moved on to the COP design. Each cylinder has it's own dedicated coil, which is perched atop the spark plug. Why do they fail? Well, it's an electrical component, and therefore vulnerable to excessive heat, water, bad manufacture, good old fashioned wear and tear, etc.
The COP design has been used on the 5.4 liter engine since its inception, and on 4.6 liter engines since the 2000 model year.
The COP design has been used on the 5.4 liter engine since its inception, and on 4.6 liter engines since the 2000 model year.
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