Help. Bad COP?

[gray1622]

I have raptor shift light. My car hesitate and shift light comes on solid in till its over. Car back fires at the end of thr hesitation some times. I am thinking the COP is bad that is connected to the Raptor. I check all wiring and turbo stuff. All that looks good. Think it be better to drive it with the injector and coil disconnected? I am about 30 minutes from part store.

 

[stkjock]

can you data log the car?

if so, log it to see where the misfire comes from, move the COP and see if the misfire follows.

if it does you know it's the COP. then drive another car to get a new COP

 

[TexasBlownV8]

It that cop properly wires with the Raptor? If wires were cut, were they properly spliced?

+1 on pull the DTCs which should point to the specific misfire code for a specific cylinder. Chances are good it is the one wired to the Raptor, especially since the light is staying on.

Something is not right there.

Keep in mind the COPs have steady 12v power to them from the red wire, and the other wire gets grounded by the PCM to create the pulse for the spark plug.

 

[gray1622]

Raptor been on for 3 yrs with no problems. No dtcs yet. I have 140k on the motor. I am wondering if I should pull the valve covers? Plan of action is to get a new cop. Pull the spark plug on the coil with the Raptor. Check it then install new coil. Then go from there. The last time I had cop it just ran like shit and the ac stop working. These cars are so werid sometimes.

 

[dysan]

Do you happen to have a WOTBOX on your car? I was having a similar issue with mine but it was just a very brief miss and the raptor would light up...turns out the WOTBOX 2-step trigger wire is very sensitive to any small amount of stray voltage and I had to put a 1k-ohm resistor on that wire and the other end to ground which bled off any stray voltage.

If you do have a WOTBOX you can email them and they will walk you through what to do.

 

[gray1622]

Yes, I do have a wot box. I ended up just bypassing it for now. I throw P0351-P0358. I am thinking I have short some where.