[nightcrawler]

I drove my truck to OSH tonight and when I almost came to stop, the truck died. Tried to start it again, it turns strong but no fire. No engine check, no water in the fuel and it still doesnt turn even when the engine cools down. Checked for the code even the check engine light doesnt come on. The code says P1212-ICP Voltage not @ expected level. I went through couple of pages and didnt find one thread that has similar problem let alone tips to diagnose it. So do do? What say you?

 

[AlaskaRedneK]

Sounds like a case of a gone bad CPS?

-Matt

 

[nightcrawler]

[ QUOTE ]
Sounds like a case of a gone bad CPS?

-Matt

[/ QUOTE ]

Is there a way I can determine whether the CPS is the source of the plm or not?

 

[STurbo90]

[ QUOTE ]
[ QUOTE ]
Sounds like a case of a gone bad CPS?

-Matt

[/ QUOTE ]

Is there a way I can determine whether the CPS is the source of the plm or not?

[/ QUOTE ]

Usually the tach will not register when cranking if the cps is bad.

When trying to start the engine, watch the tach, should read about 300 rpm or so.

Now that they are only $25.00 wouldn't hurt to just pick one up anyway.




[ QUOTE ]
The code says P1212-ICP Voltage not @ expected level

[/ QUOTE ]

did you try unplugging the ICP and trying to start it?

 

[nightcrawler]

[ QUOTE ]
[ QUOTE ]
[ QUOTE ]
Sounds like a case of a gone bad CPS?

-Matt

[/ QUOTE ]

Is there a way I can determine whether the CPS is the source of the plm or not?

[/ QUOTE ]

Usually the tach will not register when cranking if the cps is bad.

When trying to start the engine, watch the tach, should read about 300 rpm or so.

Now that they are only $25.00 wouldn't hurt to just pick one up anyway.




[ QUOTE ]
The code says P1212-ICP Voltage not @ expected level

[/ QUOTE ]

did you try unplugging the ICP and trying to start it?

[/ QUOTE ]

Ill check and see if the tach will even register when I start cranking the motor. Bear with my ignorance - where can I find the ICP? Is it on the top of the motor, just in the front of the fuel filter?

 

[STurbo90]

[ QUOTE ]

Ill check and see if the tach will even register when I start cranking the motor. Bear with my ignorance - where can I find the ICP? Is it on the top of the motor, just in the front of the fuel filter?



[/ QUOTE ]

Yes, the ICP is on the drivers side head at the front, behind the ac compressor, it has a 3 wire plug going to it.

If you unplug it the pcm will default to a preset value to try to start.

Here's a pic from the gallery

 

[clem]

Don't for get to check the#22 fuse and IPR wiring while the hood is up.

 

[nightcrawler]

[ QUOTE ]
[ QUOTE ]

Ill check and see if the tach will even register when I start cranking the motor. Bear with my ignorance - where can I find the ICP? Is it on the top of the motor, just in the front of the fuel filter?



[/ QUOTE ]

Yes, the ICP is on the drivers side head at the front, behind the ac compressor, it has a 3 wire plug going to it.

If you unplug it the pcm will default to a preset value to try to start.

Here's a pic from the gallery

[/ QUOTE ]

I unplugged the ICP and tried to start the truck. Its still doesnt start. Grr

 

[nightcrawler]

[ QUOTE ]
Don't for get to check the#22 fuse and IPR wiring while the hood is up.

[/ QUOTE ]

Checked all the fuses and they looks good.

 

[STurbo90]

[ QUOTE ]
[ QUOTE ]
Don't for get to check the#22 fuse and IPR wiring while the hood is up.

[/ QUOTE ]

Checked all the fuses and they looks good.

[/ QUOTE ]

Might want to read this thread, I believe the suggestions of what to do next will be the same.

http://forums.thedieselstop.com/ubbthrea...e=0#Post3360382

 

[nightcrawler]

I kept my eyes peeled on another thread for tips to find the cause of (P1212) but I became sick of it. So I had my truck towed to Richard's Diesel Injection in Livermore. Just matter of hours, Richard called me and said it was HPOP failure. He will need to replace HPOP, ICP, IPR at the same time. Its gonna be $$$$ and Im at one point where I think diesel is a pain-in-the ass. Also its nothing but a money pit. Do any one of you feel like this?? Gonna ask myself why I love that truck too much. /ubbthreads/images/graemlins/shrug.gif

 

[action4478]

HPOP 's rarely outright fail,,IPR's stick & fail ,ICP fail...

I'd like to know how he decided the pump was bad if the IPR & ICP aren't working?....

 

[MADVAN]

A can has been opened?

Bill

 

[BlindViper]

I too would like to know how he figured that out with the truck not running. I would have told you to look into the throttle position sensor. As mine will kill the truck when I am slowing down and letting off the throttle

 

[STurbo90]

[ QUOTE ]
said it was HPOP failure. He will need to replace HPOP, ICP, IPR at the same time.

[/ QUOTE ]

It sounds more like he narrowed it down to the entire High Pressure Oil SYSTEM????

 

[BlindViper]

I don't see how you can test the hpop system with a truck that does not run. It seems like they might be going for a shot in the dark parts swap. And the ones that are big $ from ford too.

 

[STurbo90]

[ QUOTE ]
I don't see how you can test the hpop system with a truck that does not run. It seems like they might be going for a shot in the dark parts swap. And the ones that are big $ from ford too.

[/ QUOTE ]

Yeah, I was going for the sarcastic reponse, I guess it wasn't obvious,

The OP said he tried starting with icp unplugged, so why would the mechanic be changing that if it still isn't running?? He would not even know if it is bad yet??

 

[nightcrawler]

Richard tested ICP & IPR and they are in working order which leads him to the HPOP unit. Before pulling the HPOP out, he opened the valve cover and checked if it gets any oil pressure which it doesnt have any pressure at all. Replaced the HPOP and viola! It runs perfectly.

Richard even had my truck done in time so I can attend Rubithon this year.

 

[action4478]

I'm glad you got it running....

BTW we were on your side...

[ QUOTE ]
It sounds more like he narrowed it down to the entire High Pressure Oil SYSTEM????


[/ QUOTE ]

The way to test the IPR without it running is to see if it has voltage, & To read the IPR DC % while cranking ..A good pump or a bad pump will give you the same readings if the IPR isn't working ...

Thats the reason for all the comments....

 

[bigblueskies98]

[ QUOTE ]
I kept my eyes peeled on another thread for tips to find the cause of (P1212) but I became sick of it. So I had my truck towed to Richard's Diesel Injection in Livermore. Just matter of hours, Richard called me and said it was HPOP failure. He will need to replace HPOP, ICP, IPR at the same time. Its gonna be $$$$ and Im at one point where I think diesel is a pain-in-the ass. Also its nothing but a money pit. Do any one of you feel like this?? Gonna ask myself why I love that truck too much. /ubbthreads/images/graemlins/shrug.gif

[/ QUOTE ]

Sounds fishy!!!! i think he may be taking you to the bank!!! With him quoting all those things in the HPO system, it seems theres a prob with high pressure oil! By him recommending ALL those parts, seems like he is "shooting in the dark" on the exact cause so hes gonne replace them all or "getting you with no vaseline"

wayne

EDIT" i should have read the entire post lol. glad you got it running. and itwas ONLY the hpop not all those other high pressure oil components!