deleting a lbz intake heater [Archive] - Duramax Diesels Forum

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02bigstrokin
01-05-2011, 11:51 AM
If one wanted to delete the egr and install a whole new intake tube is there a way to make it where the check engine light wont come on for the intake heater without having efi live.

Dallas S
01-05-2011, 03:27 PM
maybe if you leave the heater plugged in somewhere under the hood.

DIESELMAFIAPER.LB7
01-05-2011, 06:23 PM
It wont come on til it gets cold enough it thinks it needs it but basically no you can't (without efi live) but you may be able to make a plug in resistor to make it think its plugged in still

blackdirtymax
01-05-2011, 06:27 PM
It wont come on til it gets cold enough it thinks it needs it but basically no you can't but you may be able to make a plug in resistor to make it think its plugged in still
Uh yeah you can switch it off with efi live, its done on my truck



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dmaxfireman
01-05-2011, 06:27 PM
to remove it you must have efi to "turn off" the code.

i might be remaking my intake and selling my egr/intake air heater pipe if you are interested.

DIESELMAFIAPER.LB7
01-05-2011, 08:18 PM
Uh yeah you can switch it off with efi live, its done on my truck



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No shit that's what I said without it probably not with efi live you can real easy :thumb: ill edit my post so you can understand maybe

bullfrogjohnson
01-05-2011, 08:24 PM
It wont come on til it gets cold enough it thinks it needs it but basically no you can't (without efi live) but you may be able to make a plug in resistor to make it think its plugged in still

Thats what I was thinking. Maybe running a dummy plug with a jumper wire. Would have to look at a wiring schematic and then find out what the ECM is looking for to make it happy. I have a feeling thought the ECM also looks at the IAT sensor while its commanding voltage to the heater though, I doubt there is a way around that.

blackdirtymax
01-05-2011, 08:44 PM
No shit that's what I said without it probably not with efi live you can real easy :thumb: ill edit my post so you can understand maybe
Wow chill dude, sorry didn't mean to ruffle your feathers lmao honest mistake really


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DIESELMAFIAPER.LB7
01-05-2011, 08:49 PM
There not ruffled lol its hard to cone across right I was trying to be sarcastic ;)

DIESELMAFIAPER.LB7
01-05-2011, 08:51 PM
Thats what I was thinking. Maybe running a dummy plug with a jumper wire. Would have to look at a wiring schematic and then find out what the ECM is looking for to make it happy. I have a feeling thought the ECM also looks at the IAT sensor while its commanding voltage to the heater though, I doubt there is a way around that.

Ahh I didn't think bout that one ill have to look into that? But the dummy plug would work if the IAT didn't have anything to do with it which I also doubt now

Mike_S
01-05-2011, 08:55 PM
If you can figure out a way to apply voltage to the feedback circuit you could do it, but you would need to figure out what the resistance is in the intake heater itself, and then figure out from that how much voltage to apply to the feedback circuit, and then figure out how to switch it on and off when the ECM calls for the heater on. Seems much easier to me to just find someone with EFI Live to disable the heater cycle, code and diagnostic test...this way you don't have a hot wire floating around under the hood either.

c55asleep
01-05-2011, 09:01 PM
It wont come on til it gets cold enough it thinks it needs it but basically no you can't (without efi live) but you may be able to make a plug in resistor to make it think its plugged in still

I have an lmm so it might be different, but it turns on at 100% for 30 seconds no matter the outside temp. I saw it glowing red when I removed it and tie wrapped it to a bracket lol. After that I just made two aluminum plates to cover it to prevent a fire under the hood.

bullfrogjohnson
01-05-2011, 09:09 PM
This is for a buddy with a pretty much stock truck but he wants the EGR cooler deleted. Tony B is the only one that makes a delete kit that comes with a new IC pipe with the intake heater provisions and that kit is very expensive. Josh and I both have EFI but the owner doesnt want to spend 100 bucks on a liscense if there is cheaper way around it.

Odds are you can log the heater voltage and put a jumper wire from the power wire to the signal wire with an inline resistor and make the ECM happy.

ripmf666
01-06-2011, 04:02 AM
You still need to tape off the big red power wire when you unhook it, It stays hoot or you can trace it back and unhook it from the power box. I would tell the guy to suck it up its only 99 bucks alot better then the time you will spend search ing and tring to figure this out.

DIESELMAFIAPER.LB7
01-06-2011, 06:16 PM
I have an lmm so it might be different, but it turns on at 100% for 30 seconds no matter the outside temp. I saw it glowing red when I removed it and tie wrapped it to a bracket lol. After that I just made two aluminum plates to cover it to prevent a fire under the hood.

I see in your sig rob does your tuning just have him turn that stuff off. An for the open its worth the 99 bucks to just turn it off with. Efi live but is possibly doable without it?

c55asleep
01-06-2011, 11:25 PM
I see in your sig rob does your tuning just have him turn that stuff off. An for the open its worth the 99 bucks to just turn it off with. Efi live but is possibly doable without it?

Your right, but I guess I didn't want to bother him and at least the wires stay on the heater rather than having to remove them. Man I'm a bit tired of working on the truck lol!

GMC_2002_Dmax
01-07-2011, 05:36 AM
This is for a buddy with a pretty much stock truck but he wants the EGR cooler deleted. Tony B is the only one that makes a delete kit that comes with a new IC pipe with the intake heater provisions and that kit is very expensive. Josh and I both have EFI but the owner doesnt want to spend 100 bucks on a liscense if there is cheaper way around it.

Odds are you can log the heater voltage and put a jumper wire from the power wire to the signal wire with an inline resistor and make the ECM happy.

I have a Stream/Workshop cable, no licensing costs for me.

Is he close to Statesville ? When are you looking at getting this done ??

Lemme Know.

:D