it did set a bunch of codes probably because it was misfiring so bad. I bought some Lucas fuel cleaner and will try that on the way home and hope that takes care of it.
Random misfires
Cyl #1 misfires
Cyn #5 misfires
U1D03 couldn't find that one
P0603 PCM KAM test error
P0900 Clutch actuator open
P000D Camshaft position slow response


plug boots haven't been changed , perhaps I should order a set ....I guess they must be separate from the COPs ?

 

A COP assembly consists of 3 parts - coil, boot, spring.
The Denso boots/springs are $30 for 10 on ebay.
Motorcraft SP479 plugs are also $30 for 10 on ebay.
If you change the boots and do not change the plugs at least retorque them 20-25 ft-lbs.
The OEM plugs are only torqued to 11-17 ft-lbs and have a tendency to work loose around 100k and strip the threads.

 

That strange bunch of codes points to low voltage and/or a bad alternator because they are all unrelated. Clear the codes, and see if they show up again. Also, try a different scanner. Got a volt meter? Check the battery voltage with the engine off and then idling, and report back. Fully charged battery should be around 12.6 volts, and idling, should be 13.5-14.x

Something's weird.

However, it could just be a COP arcing (or not arcing at all) and the feedback from the coil is causing the PCM to freak out. Check the voltage like I said above, and if that checks out, pull #1 and #5 COP and see what's going on.

 

Battery voltage engine off 12.8 running 14.2 I cleared the codes . and they didn't return on the return trip but I did have a a slight amount of stumbling on the return trip.

dumped in 2 cans of Lucas Deep clean and filled up with hi test. I kept the OD off for the first 10 miles and it was fine, no problem running at 3000 rpm which is about 50 mph., Kicked in OD , was good for about 70 miles running 60 - 65 mph no problem and got behind someone going a little slow, lost momentum and it shifted down, up to 3500 rpm no problem, it dropped down to 3200 (torque convertor locking back up ?? ) and started stumbling, backed off on the gas pedal and it smoothed out. Was Ok the rest of the trip until a steep hill by our house , I foolishly left it in OD as I wanted to see if it would pull it over the hill, big mistake ....started stumbling and wouldn't downshift, kicked off OD but didn't help .....I didn't want to manually downshift so i let off and crept over the hill. It did not set any codes.

Here is the crazy thing , my son said his car started doing the same thing on sat but he bought gas 30 miles from where I got mine

 

Do you have a Scangauge, Torque Pro app Or similar?

If you are having misfires you may want to chaange the plugs, and boots as mentioned earlier ITT. I always carry a Denso COP in my truck and have an extra at home in a box.

Has your fuel filter ever been changed? Air filter clean?

I would start with a little maintenance and cleaning.

 

Changed fuel filter , seems a lot better ....it did pull up the hills better , will know better when I pull the Toad as that adds about 2600 lbs . I have an air filter coming and boots for the COPS, also have a set of plugs but that will be the last thing I change .

 

This was 2018? No follow up? Experiencing occasional misfires and trying to see how others have solved.

 

I was in the process of changing the COPS and found antifreeze in the spark plug wells for cyl 1,2 and 3...turns out the heater hose was leaking just enough to flood those wells. Once I tightened the hose clamp, dried out the plugs, it took care of it

sorry I didn't get back to this thread before

 

No worries, that's awesome and an easy fix. Thanks for the update.

 

@tiffy2000 How are the shuddering issues-still holding up ok? Just curious, my V10 started doing the same thing. No leaks anywhere into the plug areas though.

 

Is your "shuddering" a misfiring/pulsing or generally running rough?
Are there any vacuum lines that feel soft, particularly ones that connect to the engine like behind the throttle body?
How many miles since the MAF was last cleaned?
How old are the COP boots, they can age out and arc right thru the rubber without a visible spot.
I change the COP boots at 50K along the spark plugs, they are available separately, the COP coils will far outlast the boots.
Is it shuddering while accelerating or shifting gears?

 

Vacuum lines look good. MAF, EGR, O2 sensor serviced by dealer about 40,000 mi ago. New Motorcraft COP and plugs done at 135,000 miles (197,000 on it now).
It shudders-jerks-like it loses power for 1/2 a second, guess you could describe as a misfiring cylinder mostly when going up a hill under constant load. Not when shifting. Had transmission rebuilt just a few months ago and it seems quite fine.

 

My first guess would be a spark plug boot because of the "up a hill under constant load" thing which makes it harder for a spark to cross the gap.
Some test equipment can tell you if there are occasional (pending code) misfires on a particular cylinder which isn't setting a code.
It takes a lot of misfires to set a code, especially if they are intermittent.
Once a suspect cylinder(s) is found then you can zero in on the COP coil or boot, plug, water intrusion, loose/corroded connector pins, multi strand power wire with broken strands, poor electrical grounds, clogged fuel injector filter screen, ....
The PCM is connecting the spark plug and fuel injector circuits to GND when it is time to fire a plug or open an injector so good GND connections at the PCM are necessary.