Hi All

Looks like a great forum with lots of good information. I have been following some of the threads for weeks and i have found several tidbits of good information that I have used.

I have a 2003 Excursion Limited with the 6.0L PSD. I have a 4" Pro-Comp Lift with 35 Tires. Love the truck..although I have some questions as to wether anyone else hase experienced some of these problems.

We have lots of snow and ice up here. When i put the truck in 4x4 it seems to work fine initially. However after a while the 4x4 seems to dis-engauge and I get lots of rear wheel spin. I can turn it off and then on again....good for the first couple of minutes then I lose it again. I have taken to the dealer (when the roads were dry) and they say that they found nothing wrong. However the sevice guy told me that I was the third guy that day to bring in a truck with the same problems. Any input would be appreciated on this.

Also, I know this issue has been covered, but I just want to get some fresh thoughs. I have had the trucj flashed with the latest program. It runs smooth now (for now) and a lot better on warm starts than it was (although it still can be a bit rough on warm starts, but it is a lot better) However I have a real bad "dead spot" when I first take off. This is a major pain in the a**. Anyone else have this problem and is there a fix?

One last thing. Does anyone have any information on getting the speedo etc calibrated for the 35 tires? Ford says the can only calibrate for one size up (34's)

Again..great forum..lots of good info. Sorry for being long winded and any info is very much appreciated. If anyone has any questions foron this truck compared to others I will help with what I can.

Thanks in advance....

 

Welcome oilman!

I can only address one of your issues.

Is your AC cycling when you lose your vacuum engagment? It cycles on face/foot & defrost/foot & all defrost.

I read sonewhere that the test model did the same thing as what you describe.