I have a 2001, 2wd, XLT, Super Crew with 4.6L and 180000Kms. I am the 2nd owner and have owned it for roughly 6 years.
Since owning it I have towed the following: a 1500 Boat, 1000lb full utility trailer, a 2700lb boat, and most recently (Last summer) a 3500lb dry weight/4000lb full 22 foot camper trailer.
None of these items ever caused me any problems til mis summer with the camper.
I have always got check engine lights for the stupid coil packs. It seems like I would replace one and a different one would go. I was camping one weekend a short hour distance from my home when I pulled onto the main highway and began to excellerate up to highway speed but it was feeling sluggish picking up to 100kph. When I merged onto the highway it was not a flat peice of ground and was a small grade of a hill, but nothing big. Before getting to the top I started to hear a strange noise, almost like a rattleing, and the check engine light started to flash. After breaching the hill, it picked up speed, the light went out, and everything seemed fine.
This happened twice last summer with no other problems.
At the end of the summer I once again had a check engine come on...I had blown out a plug, had it fixed and relaced 2 more COPs but still had codes showing for CC, M, F, O, OH, C, E and EV. My reader also said Freeze Frame, and MIL on.
I had the truck in in Nov/Dec for an emissions test and it was given a conditional pass due to codes reading but no Check Engine light at this time.
I want to keep this truck...I will be towing the camper again, buit I'm considering getting a different truck. As it is I know I already have to have air bags installed in the rear to level out the load when towing. Hopefully that will cut back on some of the excelleration drag.
At present time I have a check engine on...I'll check it again and post what its reading but most likely the same stuff.
Any thoughts?

 

I would consider putting a load distribution device on the trailers coupler. these will work well if the tongue weight and ball mount are with in range. check into these products at etrailer .com
Ron

 

Have no idea what your letter codes mean.
Post the codes in P four digit code form only not just what you think they mean..
Good luck.

 

The "codes" are the cheap code readers abbreviation for the various OBDII monitors, they're not codes at all.

 

How does that have anything at all to do with his engine misfires?

 

My mistake the codes are: PO304 -

and;

CONTINUOUS MONITORS
CC - Comprehensive Component Monitor
M - Misfire
F - Fuel system monitor

NON CONTINUOUS MONITORS
0 - Oxygen sensor monitor
OH- Oxygen sensor heater monitor
C - Catalyst Monitor
E - EGR system monitor
EV - EVAP system monitor


That make any more sense?

 

For the moment the 304 code is the only one that means anything.
Misfire on cylinder 4.
Good luck.

 

That was a given...its the reast of the lights I was asking about

 

None of the rest of the monitors will be allowed to run until you fix the misfire. So fix it, reset the PCM, and then drive the truck normally a few days and recheck the monitors.

 

^What he said