Have a problem now at the RV Park we are at in Tucson. Any ideas, or suggestions before I decide to take it to a shop? Hate paying the prices and never know when I might be led down a dark alley with what the problem is.

A couple of instances last fall where after starting the truck it would sputter and stop or sputter and finally start running normal or would crank and not start. After a few of these no more problems. Set Superchips Power Programer to performance mode for pulling 5th wheel West. Ran fine all the way out to Yuma, AZ from Duluth. We were in Yuma for 5 weeks and I tried to set the computer back to stock and got the error message. Tried again and it worked.
Drove about 250 miles to Tucson with no problems. Also drove about 60 miles on various trips locally. Decided to try again to return to stock and got error message of intake air temp too high, which makes no sense as the vehicle has not been running. It turns over fine but won't start. Put the fuel pump fuse back in before each start attempt. Also had an error message once of number 6 which may correspond to Computer and Auxilary Outputs.
Superchips no longer provides support for this model tuner as it is a 1999. They thought the problem was in the computer control module. Truck is a 99 Ford F-350 V-10. I have been looking on the Internet and have found horror stories of dealers charging $1000.00 for computers and $800 in labor. Have been trying to take computer out and removed two screws from what holds the computer behind the parking brake but it won't pull out. Must be a screw from firewall side to remove, but it's pretty hard to see back there. If I could get it out I would try to see if I could get it tested and if there are issues, I would send it in to be refurbished. I'm not a good armchair mechanic but I am a good research person and $1800.00 is a lot of incentive.
If nothing else I will have it hauled to a local recommended shop, but probably can't get it in until Wed at earliest.
Any suggestions or help greatly appreciated.

 

Call Mike @ Mike's 5 Star, he advertises on the 6.8 V-10 thread further down. The other ting I would change first is the fuel filter. May be that with the stock setting it will run richer and not getting enough fuel. The performance mode has a leaner air/fuel mixture; that's what I've been told. Before spending that kind of money on a dealer, call Mike, he is the V-10 guru and his programs are the absolute best there is for a V-10.

Pap

 

Here you go:

5 Star Tuning | Custom Dynomemeter Chassis Tuning Products and Services

 

I found decent pricing on PCM' s at Auto Computer Exchange | Remanufactured OEM Auto Computers . They had one for $500 for my '00 SuperDuty and gave a full refund when I found I did not need it. Great people with solid answers and business ethics.

There is one 10 mm bolt holding the wire harness to the computer on the engine side of the fire wall.

 

Thanks Az Pete. What did you find as the problem when you discovered yours was fine?

 

Mine was a problem with the exhaust backpressure sensor.....a 7.3 diesel thing. Seems that it killed the engine....and the shop I was at had issues with his scanner reading things on my truck.

 

Another thing I would try is to put the computer back to stock, then disconnect the battery for about a hour, then reconnect and see if that does anything.

Pap