Help! Cant get truck started! 2001 7.3

[mxunit13]

Cant get my truck to start, glow plug relay is good, glow plugs are good, both batteries are good, the truck is cranking hard and fast but it just wont fire up, the truck has not thrown any codes either and only has 178xxx . Please help me with this as this truck is my daily driver and with first snow appearing I need to get this fixed asap. Thanks guys

[goats]

Does WTS come on

[JSchuricht]

Outside temp?
Smoke coming out tail pipe?
Oil full?
HPOP reservoir full?
Fuel in fuel bowl?
Fuel pump running?
Age of fuel filter?
Voltage while cranking? Use a multimeter.

[mxunit13]

Yes WTS does come on, fuel filter bowl is full, filter changed about 2500 miles ago, fuel pump turns on, hpop is full, engine oil is full, NO smoke comes out of exhaust so cylinders are not getting fuel, outside temp about 25-35 F...Im thinking maybe an injector o-ring, fuel pressure regulator or injector pressure reg???

[ajpu1983]

It would be nice to have ICP while cranking over to determine if it is an ICP issue or it could possibly be a bad IDM.

[sgg93]

Is your tach registering when you're cranking? If not, change your CPS.

[NoRalPh]

Originally Posted by sgg93

Is your tach registering when you're cranking? If not, change your CPS.

No, no, no,,, '01 was the year where that All changed. Some '01s will show cranking speed on the tach (a good indication the CPS is bad), some will not.

I believe the difference is the instrument cluster redesign to add the Trans Temp gauge. If you've got the new cluster, WITH the added gauge, the tach won't show cranking speed. If you have the older cluster WITHOUT a Trans Temp gauge it will....

[mxunit13]

just replaced my CPS about 15 min ago and it didnt do a goddamn thing..wasted $40 for nothin, my tach is not showin any movement when the truck is cranking either, wires to the CPS are fine, I also noticed when I turn the key on, sometimes my battery voltage is lower then what it should be, then ill crank and it wont start, and Ill turn the key back off, then turn it back on the voltage will be up higher where it should be..

[mxunit13]

after looking at all the forums and related problems to my truck im thinking its either the IPR or wiring harness under the valve cover is burned out..what you guys think?

[NoRalPh]

What equipment are you using to pull codes?

You can try unplugging the ICP for a "Free" test

The IPR can be serviced, it's actually Less likely to cause a No Start condition than the ICP but, here's some good IPR info -> New Page 0

You can check to be sure the nut is tight (that will give you trouble) and sometimes "tapping" on it will free a stuck one...

It's more likely a UVCH will drop 1 side first, allowing the engine to start on 4clys, then to have both sides fail at once.

Check all the fuses, maybe swap the IDM relay with the blowers....

You sure you're getting fuel? Bowl Full? Pump running? Tank over 1/4? (could have a bad sending unit and it's actually empty)