random dieing issue

[svt28640]

My truck has started randomly dieing. Sometimes come to a stop an itwill start idleing rough then die. Starts back up fine sometimes will die again. I can Rev it. Up after it dies an it'll be fine. An sometimes during normal driving petal becomes UN responsive. Hpop has 4999 psi at idle. An climbs in rpms. I'm thinking cps.any ideas

[the trav]

Originally Posted by svt28640

My truck has started randomly dieing. Sometimes come to a stop an itwill start idleing rough then die. Starts back up fine sometimes will die again. I can Rev it. Up after it dies an it'll be fine. An sometimes during normal driving petal becomes UN responsive. Hpop has 4999 psi at idle. An climbs in rpms. I'm thinking cps.any ideas

Your HPOP should NOT read 4999psi @ idle.

It should read somewhere between 500-1000psi when cranking depending on HPOP condition. (it takes minimum500psi to pop the injectors, and ive seen as high as 1000psi cranking)

You need to check the ICP sensor/plug/harness in my opinion

[svt28640]

Would the icp sensor being bad make it have less power?

[buckles24]

Originally Posted by svt28640

Would the icp sensor being bad make it have less power?

It can. I broke my ICP sensor when working on my truck and I lost power and it acted just like you are saying. I dont know what my pressure was cause I didnt have a gauge for that but I would be willing to bet that is your problem.

[svt28640]

Ok i hooked my scan tool to my tuck tonight an happened to check the codes.. Does not have a check engine light but has 11 codes. I know the po238(boost sensor a to hi) was from over boost( fixed that with regulator) an the p01249 (wastegate control valve performance) is from the turbo being non wastgated an the plug/vaccum hoses being gone. an the p0541(intake air heater) its deleted) But still has p0232 fuel pump secondary circuit high, p1209, P1210, P1211 INJ control pressure system, P0471 exhaust pressure sensor circuit performance,P0475 exhaust pressure control valve fault, P0340 CPS circuit, and P0743 TCC system electrical fault. .. Happened to have the data up on my scan tool when the pedal went dead an idle dropped an inj control psi jumped to 20750, The truck has seemed to been weaker then normal lately but never get drove much. My mods are in the Signature .

[svt28640]

Ok guys new info I changed my icp sensor an it did nothing, I changed the scan tool setting from kpa to psi an it now reads 725 psi at idle an about 1100 psi at 2000 rpms. It now has like a dead miss/lope shakes. And only has p1210 an p1211 codes now. But if you hook the scan tool up to the truck while running an try clearing the codes it kills me

[svt28640]

also now if its ran a while. when u cut it off an try to start it back it will idle way low like 3-500 an pedal want do nothing. cut it off an try it again it will be fine sometimes have to cut it off 2 or 3 times

[svt28640]

The Icp is new. Ipr is replaced with known good one
Its still throwing 1210 an 1211 codes. Does this mean hpop?

[EOGeer]

My pickup is doing the same thing.

[svt28640]

I have changed the icp, ipr, idm, an my oil pump has 2600psi at wot loaded not optimum but shouldn't be low enough to Cause problem. But it still throwing icp codes 1210 an 1211 an after driving when you turn the truck off an try to start back it does the pedal unresponsive an crappy idle. Well just for hell of it I unplugged icp an it starts back fine everysingle time.