6.0 No throttle response to now wont start
 

I have a '03 F350 with the dreaded 6.0, had egr and injectors worked on about 3000 mi. ago then all of a sudden it was like some one threw out a ten ton anchor. I got pulled over and put it in park, truck would idle but no throttle response. when I got some one to tow it home as soon as I put it in neutral the engine died. towed it home and got it strted (kinda) ran at real low idle and rough as hell. changed oil again and all filters including fuel. NO HELP, had someone read codes and said had a bad CMP, changed it, NO HELP. Read the FICM and it was good. changed the ICP and plug, Still NO HELP. So is my HP oil pump bad or just a leak at the STC fitting? Can you just change the STC or do you have to change the whole pump?

So you don't have any codes currently?

You need a way to check your HPO pressure and you can do that at the ICP connector if you don't have a ScanGauge or something similar. It's possible that it's a HPO issue, but it would be worth it for you to find a way to monitor your HPO system while cranking.

Lacking a gauge - there is a way to use a volt meter to see what the ICP sensor is putting out.

If it turns out to be your STC fitting - you don't have to replace the entire pump, but you do have to remove it to replace the fitting.

your 03 does Not have an STC fitting

03s dont have all those HPO issues usually
03 HPO system is alittle diffrent

It might be a IPR issue since you just had work done

did they do an oil cooler too or anything eles????

Thanks Benny. Too many 05's today.

your code for CMP was just set from the stall event it wasnt bad

Stick around tons of Great people and info here

and welcome to FTE


pull the IPR and check the screen if its clogged or pushed IN or has a hole in it time for a new one

gauges would be a Big help to rule some things out

well i changed the ipr, and i will shoot the the first ford engineer i meet. and to no avail still wont start. there was no screen on the ipr i pulled out. where did it go?

You might just have air in the high pressure oil. It takes some cranking to get it out.

However, before you just "crank away", I would measure the ICP volts. You need 0.8 volts (sometimes a little less does it) to start. A scangaugeII is about the cheapest scan tool - or you can strip some wires at the ICP sensor and measure the voltage there.