COP's

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04-12-2008, 03:55 AM

prochargedGT

3rd Gear Member

Thread Starter

Join Date: Jan 2007

Location: maryland

Posts: 544

COP's

i want to check my spark plugs to make sure there all working and was just wondering if i disconnected the cop if it would throw a check engine light?

04-12-2008, 10:26 AM

jojo2003

2nd Gear Member

Join Date: Apr 2007

Location: California

Posts: 347

RE: COP's

I don't think so. I disconnected mine to see if they were throwing a spark, and it never threw a code.

04-12-2008, 12:10 PM

meechuacon

3rd Gear Member

Join Date: Sep 2006

Location:

Posts: 541

RE: COP's

No, I don't think they throw a code either. A couple of my COP'swere bad and it never showed a CEL. You would think it would though.

04-12-2008, 12:17 PM

35thAnni99GT

3rd Gear Member

Join Date: Mar 2007

Location: Where gunshots are more common than birds chirping

Posts: 504

RE: COP's

its safe to do.

i still pull all my cop plugs every once in awhile to be safe. there's a good deal on some accel coils on MMR

04-12-2008, 01:07 PM

prochargedGT

3rd Gear Member

Thread Starter

Join Date: Jan 2007

Location: maryland

Posts: 544

RE: COP's

good **** guys thanks

04-12-2008, 08:08 PM

LynnBob Mustang

5th Gear Member

Join Date: Aug 2007

Location: PA

Posts: 2,243

RE: COP's

My CEL light is on and it is running a little rough, Auto Zone says it is a miss fire on #5 cylinder, so I'm guessing it is a COP on that cylinder.

Lynn

04-12-2008, 09:01 PM

timmehtimmeh

Join Date: Mar 2007

Location:

Posts: 12

RE: COP's

It will throw a CEL if you let it run for a while with a coil disconnected, it just won't do it immediately. It doesn't sense that the coil is disconnected, it just senses a misfire. After a few hundred misfires, it sends out the CEL.

Also, if the CEL does come on for a misfire, it will turn itself off after driving it for a while after the problem is fixed. You don't neccesarily need to get the code 'cleared'.