[rednck21]

p0541- intake air heater A curcuit low
p1211- inj control pressure higher or lower than desired



SES light comes on at full boost, about 23psi, and goes out after a couple minutes. i thought it was the an overboost code, but its obviously not. how do i get rid of these?

thanks, Blane

 

[rustler]

541 is from the manifold air heater delete mod.
1211 may be the chip asking for more high psi oil than your hpop can deliver or poor programming...R

 

[H2OWALL]

How do you find out if the 1211 code is low pressure or poor programing?

 

[gregrob]

[ QUOTE ]
How do you find out if the 1211 code is low pressure or poor programing?

[/ QUOTE ]

Poor programming is a new one on me.

The programming asks the HPOP to flow more than it is capable of sometimes.....

Call and talk Jody

 

[rednck21]

my hpop seems to be pretty strong according to my dyno chart at higher rpm's.....ask hammer, he saw it /ubbthreads/images/graemlins/biggrin.giftruck only has 81k. should i be calling TS first to see what is up with this?

 

[edub32]

Yep P1211 is low oil pressure to the injectors. This is pretty common code with chipped trucks. The only fix is a dual hpop or a stronger single. I wouldn't exactly say the cause of this code is poor programming.

 

[Duzitall]

In this case it may not be "poor" programming however... if a poorly programmed lower HP chip is unnessesarely attempting to raise injector oil pressure too high instead of increasing the injectors duty cycle then you get P1211 "ICP out of control". I seem to recall back in the day Bill explained such phenomina. Higher output programs just exceed stock equipment's capabilities. A stock but otherwise healthy HPOP (like mine) just can't continueously provide 80 more horsepower than it was designed to produce. I think you should call TS and ask them. Then tell us what they said.

 

[TheHammer69]

[ QUOTE ]
my hpop seems to be pretty strong according to my dyno chart at higher rpm's.....ask hammer, he saw it /ubbthreads/images/graemlins/biggrin.giftruck only has 81k. should i be calling TS first to see what is up with this?

[/ QUOTE ]

Blane...wheni first got my DP-tuner from Jody a long time back...i had no ICP issues. But after a few months I started having them. Your HPOP looked strong on the dyno up at "smokin'", but who's to say it hasn't fallen off since then. Or who's to say that you havn't developed a problem elsewhere in your HPO system. You IPR O-rings could be bleeding by. Your Injector O-rings could have started leaking by. Your armature clearance in an injector could have deminished. The fact that you are now getting a 1211 code indicates that ICp is now not able to be maintained like it used to.

Hammer

 

[H2OWALL]

With all the possible causes how does one isolate the problem to fix it without fixing things that arn't broken? Big oil is expensive and would certainly solve the code, but what if the stock HPOP wasn't weak and the code is coming from one of the other sources mentioned, wouldn't I just be masking a problem with more volume and possibly leaving something to get worse over time?

 

[rednck21]

[ QUOTE ]
Blane...wheni first got my DP-tuner from Jody a long time back...i had no ICP issues. But after a few months I started having them. Your HPOP looked strong on the dyno up at "smokin'", but who's to say it hasn't fallen off since then. Or who's to say that you havn't developed a problem elsewhere in your HPO system. You IPR O-rings could be bleeding by. Your Injector O-rings could have started leaking by. Your armature clearance in an injector could have deminished. The fact that you are now getting a 1211 code indicates that ICp is now not able to be maintained like it used to.

Hammer

[/ QUOTE ]


great, is there any way to tell what it is, other than throwing parts at it? i think i will call TS. ive been having some problems with the 50hp setting anyway.

 

[TheHammer69]

[ QUOTE ]
[ QUOTE ]
Blane...wheni first got my DP-tuner from Jody a long time back...i had no ICP issues. But after a few months I started having them. Your HPOP looked strong on the dyno up at "smokin'", but who's to say it hasn't fallen off since then. Or who's to say that you havn't developed a problem elsewhere in your HPO system. You IPR O-rings could be bleeding by. Your Injector O-rings could have started leaking by. Your armature clearance in an injector could have deminished. The fact that you are now getting a 1211 code indicates that ICp is now not able to be maintained like it used to.

Hammer

[/ QUOTE ]


great, is there any way to tell what it is, other than throwing parts at it? i think i will call TS. ive been having some problems with the 50hp setting anyway.

[/ QUOTE ]

I've done forgot one thing...have you changed your oil since the dyno? I've seen a few hundred psi change in ICP pressure just from going from old oil to new oil.

Hammer

 

[Duzitall]

[/ QUOTE ]I've seen a few hundred psi change in ICP pressure just from going from old oil to new oil.

Hammer

[/ QUOTE ]

Clean oil is good of coarse. I've always used Delo. That the right stuff Y'all? Anyone ever test the pressure difference between Delo and Rotella? Ha! Can't believe I asked that. Funny aint it?

 

[rednck21]

yeah its been changed since the dyno. how would new oil affect psi?

 

[Duzitall]

[ QUOTE ]
yeah its been changed since the dyno. how would new oil affect psi?

[/ QUOTE ]
Not sure how but my big bad 466ci gasser gets 65psi oil pressure when the oils ready to come out. 80psi with fresh 10-40. Maybe in my big blocks case it's the clean filter element?

Chris

 

[TheHammer69]

[ QUOTE ]
yeah its been changed since the dyno. how would new oil affect psi?

[/ QUOTE ]

Here is an example...When Jody was in Charleson for the SC-PSD get together last year. He was doing live tuning on Fomogo's truck. The ICP was running about 2100psi IIRC. The oil was then changed and even up to temp, it was holding around 200-300psi more. This was using Rotella 15w-40 in both cases. A bottle of Engine oil defoamer wouldn't hurt either.

Hammer

 

[rednck21]

if changing the oil helps, would changing to synthetic help even more?