My Truck Died

[Dieselmech]

Hey there, wondering if anyone can give me some help. I have a 97 7.3 with a no start problem. Thought it might be the CPS, but I replaced it with no luck. I had my brother crank it while I pushed in the schrader valve, and it is getting fuel there but still no start. Sprayed some ether down the intake and she started right up but soon died when the ether burned up. Im now thinking it might be the IPR valve. Anyone have any suggestions?

[MrJohnWayne]

might be the icp?? try unplugging the icp and see if it starts.

[SCUFFY828]

if it started with either you dont have any fuel pressure , only thing it can be is low fuel pressure , just because you have fuel at shrader valve doesnt mean it has pressure behind it, run a fuel pressure test, needs to be at least
50 lbs to start

[Dieselmech]

Tried unplugging the ICP, still no start. Definitely not getting 50psi at the schrader. Mabye 10 tops.

[SCUFFY828]

you just answered you r own question , sounds to me like your fuel pump is weak , will not start with that fuel pressure

[Dieselmech]

Heres the story. Ive had the truck for about 3 months now. The truck ran like a top. A couple of weeks ago I got a TS performance chip. Installed the chip and on came the problem. When I went to change different positions, it stalled out, but would always start right back up. The chip did work also, aside from stalling out while switching. Came back from the store, and was fiddling with the switch to see if it would still stall. Of course it did, but hasent started again after that. So I let it sit for a while and drove my old truck, just now gettin around to fixing it. I just cant see why the chip would make my fuel pump shat the bed

[SCUFFY828]

very possible just a coincidence , or may have had to work a little harder to keep up, possibly causing failure

[Dieselmech]

It could happen. But I hope it didn't, I need to get this thing back on the road quick. And shelling out the money for a fuel pump is not sounding good.

[pipelayerjdh]

Are you switching th chip while under throttle? Or does it stall after you get back on the throttle?

[Dieselmech]

only tried switching it at idol. It didnt always stall out, sometimes it would just bog down and drop rpm's a bit and then come back up. But occasionally would die on me. I have removed it and sent it back to where i got it so they can check the programs on it, so its out of the truck now.