Something to do with the cal vehicles also and the state yours was sold in..Mine is OBDII but some are OBDI. I read that in the manual also.

Dick

 

i believe the obd II works w/ my vehicle and i've purchased the scanguageII. we'll see. as for the misfiring issues, replaced all 10 coil on plugs...misfire gone. thanks for the help

 

Hello guys !
not sure if you have done this or not but its a procedure that I've always used when replacing COP's .
Always use dilectric grease on the lip of the rubber boot(heavey enough ) that seals to the head .this will help repell the water from entering the plug area.

Also when changing plugs you can just replace all the boots ,their not that expensive.as the boots heat over time they will start to carbon arc and you have to look real close to see it.

Rich

 

Again, there is a different between a vehicle being "OBD-II compliant" and being able to read the PCM with an "OBD-II scanner". The actual interface is "OBD-II" electronically. But the PCM doesn't adhere to all the OBD-II emissions specs.

EXCELLENT news!

 

The COP electrical connectors are delicate and easily damaged. The local Ford dealership damaged one on our Explorer a while back. Some of the Ford's also has a feature that shuts down the A/C system when it detects misfiring cylinders.

 

There is a TSB, I forget the number, but it refers to the 4.6, 5.4, and 6.8 having the rear COPs getting water-logged from rain (or wash) water coming through the hood gasket at the cowl. As I recall, the fix included replacing the gasket, and the affected COPs. Also, cheaper code scanners for about $89 or less from Advance, AZ, etc. will tell you which cylinder is misfiring. Codes may be "hard" (CEL on) or pending (PD, CEL off) but look for the infamous P300 codes (301, 302...310). The last two digits tell you the cylinder number.

Mine is misfiring, too, but I have ruled out all of the above. I narrowed it down to no power to the #2 COP. Only problem is, I want to trace the wire back to the PCM, but finding a diagram without a more expensive manual is proving nearly impossible.

What have you found on this truck?

 

Actually, anything after 1996 into the mid 2000s is OBD-II, then after that is OBD-III...

 

Sigh... read this link:

https://www.ford-trucks.com/forums/5...t-come-on.html

The Superduty, for the most part, up until 2004 is NOT OBD-II compliant, because it is >8500lbs GVWR

You can communicate with the PCM using "OBD-II" communications link, but it is NOT OBD-II emissions compliant.

Misfires for one thing will NOT set a hard code.

 

Acknowledged. Should they not communicate using an OBDII plug, though? Even if not required to comply with <8500 lb. GVWR standards, it would be more expensive to continue to support software and parts for both OBD I and OBD II. Nonetheless, my 99 F350 SD is OBD II compliant, regardless if it is required to be tested in my area... I still have yet to run across one with OBD I that had not migrated up from south of the border, as I think they still do not have- or is much more limited- emissions standards/restrictions.

 

The OBD I models that were produced after 1996 using OBD I connectors, I believe are actually vehicles that were produced in Mexico for use there, and not the US. I have seen what you are talking about in GMs, too. A new body style truck may actually have rolled off of the assembly line (usually one of the Mexican truck plants) with a much earlier design engine in it (looks strange, to boot) that cannot be purchased in the US. One showed up in my bay several years ago, and had me scratching my head until the lead tech at my dealership described the same to me. It just so happened that it, in fact, had been driven in by migrant workers and still had Mexico licensure of some sort (plates or inspection decals or some other sort- can't recall).

 

Just ran into these myself did anyone ever figure out what they are or why the replacements don't have them?

Replacement the left and the part in question is above the old one the right.

 

They are radio noise supressors used on older style COP coils.
Rich
I believe the newer COP coils are built in the coil.
Rich