Im trying to help my dad diagnose why his '02 Excursion wont start, and unfortunately myself and all my tools are no where near him right now. So heres the deal; he went back up north about 3 weeks ago and the truck has had hard starting issues from when he first arrived. Now today, it wont go. Heres what I know:
-Its getting fuel out the exhaust, and I know its not gelled up, fuel pump is working.
-This led me to possibly a bad GPR, but he's jumped that and still no go.
-We replaced the CPS with a new one from Ford, and still nothing.
-There is an oil leak somewhere on the motor, but the crankcase is full so it shouldn't be an HPOP problem.
Its turning over fast enough and has a good starter and batteries in it, so thats not the issue. Fuses are all good. The truck does have a DP Tuner, for which all of the connections are good and tight. I'm really stumped here. With the exception of the last 2 years, this truck has spent most of its life up north and never had any issues. What should I look at here guys?

 

Is the tuner in the no-start setting or is the switcher blank?

 

Pull the chip and try. Also are you sure the fuel pump is working 100% had a buddy do similar and took it to the dealer. Come to find out the fuel pump was bad.

 

The chip is in the stock position now, which is 1. It appears to be working fine, it changes through the codes fine. The issue started when the truck got to the cold and has gotten progressively worse, so I really doubt this could be the problem.
The fuel pump is sounding normal, and when he forgot to tighten the filter head back on it shot out everywhere, so it is definitely building pressure.

 

Wait, just re-read your original post. Excursions don't have GPRs. What he jumped was the AIH. The Excursions all have GPCMs. Is his SES light on?

 

Good point about no gpr. Have you tried plugging in the block heater?

Here is a pic of the aih and gpcm: https://www.ford-trucks.com/forums/m...4368-gpcm.html

 

The block heater doesn't help the situation. What is the AIH? Ive never heard of that one. So how does the GPCM work? Could that thing of gone out some how? The SES light isn't on either.

 

The aih does nothing to help start the truck. The gpcm serves the same purpose as the gpr. How long since the last oil change? I would check the hpop reservoir and make sure that is staying full. Might want to unplug the icp sensor and see if you can start. Ford Truck Enthusiasts Forums - tdpower's Album: Useful pics - Picture

 

Last oil change was at the end of November, so its due for a new one. It'll be getting it in the next few weeks when I get up there. We'll give that ICP sensor a shot, thanks.