02 LB7 really PI$$!NG me off! No power! - Page 3

Stevenmc89 · 11-19-2012, 06:39 PM

I work nights so is there anyway to tell if I have a boost leak with how much psi I'm reading? I'm planning on just pulling the tubes off to get a close look at them and the boots. I don't have a tec II and really don't want to look at the injectors or cp3 but if it is one of them I hope the cp3 is still under warranty! The local Chevrolet dealer put it on a few months ago when the previous owner had it and let's just pray injectors are good. I don't mind the labor but 1800 dollars for something guaranteed to go back out is just stupid

Stevenmc89 · 11-19-2012, 08:12 PM

Okay went out to the truck on break and felt the ic tube. It has wear but not all the way threw it

!!! I did notice it seems like the rubber ends is soft as shit. Is it supposed to be so easy to wiggle these tubes?!? Seems to me there might be a good chance a rubber boot is tore of something

Stevenmc89 · 11-19-2012, 10:44 PM

Alright I hooked the predator up on the way home and when I went to pull a normal hill in 5th that was never a problem before it had no power. It read boost 22 psi, MAF 254 g/a, iat 64, ect 154, outside temp was 54 and the one that got me was 78% engine load! Also the turbo seems a lot louder. Boost leak?

Stevenmc89 · 11-20-2012, 01:22 PM

Ok double checked everything and it looks fine. Took programmer off which took forever saying it can't communicate then took it for a spin then checked codes u1000, p0380 for glow plugs, and p1781. Could this p1781 be causing the problems??? If so what do I need to do???

beanpole209 · 11-20-2012, 05:30 PM

Ok, the P1781 is a TCM code, low voltage or something like that IIRC. Maybe one of your batteries are low? I'm thinking that if initial voltage is too low, the TCM will throw that code, could be wrong. It could also cause other problems if your batteries are low.

Stevenmc89 · 11-20-2012, 08:08 PM

One battery is maybe a 6 months old and the other is 2 weeks old. One of them had a bad cell that showed up when our cold spell hit a couple weeks and I didn't have the money to buy both at the same time like You're suppose to do.

beanpole209 · 11-21-2012, 10:50 AM

Ahh, well. Ive gotten to were I buy the 3yr warranty batteries because they normally conch out around 2. I found, for whatever reason that the top post/side post batteries have more CCA's too, and it makes it handy having the top post.

11-19-2012, 06:39 PM	eBay Motors #21 (permalink)
Stevenmc89 Senior Member Join Date: Nov 2012 Location: Enterprise, Al Posts: 326	I work nights so is there anyway to tell if I have a boost leak with how much psi I'm reading? I'm planning on just pulling the tubes off to get a close look at them and the boots. I don't have a tec II and really don't want to look at the injectors or cp3 but if it is one of them I hope the cp3 is still under warranty! The local Chevrolet dealer put it on a few months ago when the previous owner had it and let's just pray injectors are good. I don't mind the labor but 1800 dollars for something guaranteed to go back out is just stupid __________________ 2002 LB7 CC/SB 4X4, 6" RCX LIFT, 37" TERRA GRAPPLERS, 18" KMC HOSS, K&N CAI, EDGE EVOLUTION CS, STRAIGHT PIPE, NICKTANE, RANCHHAND BUMPER WITH 30" RIGID LIGHT BAR, AND OTHER DOO DADS

11-19-2012, 08:12 PM	eBay Motors #22 (permalink)
Stevenmc89 Senior Member Join Date: Nov 2012 Location: Enterprise, Al Posts: 326	Okay went out to the truck on break and felt the ic tube. It has wear but not all the way threw it !!! I did notice it seems like the rubber ends is soft as shit. Is it supposed to be so easy to wiggle these tubes?!? Seems to me there might be a good chance a rubber boot is tore of something __________________ 2002 LB7 CC/SB 4X4, 6" RCX LIFT, 37" TERRA GRAPPLERS, 18" KMC HOSS, K&N CAI, EDGE EVOLUTION CS, STRAIGHT PIPE, NICKTANE, RANCHHAND BUMPER WITH 30" RIGID LIGHT BAR, AND OTHER DOO DADS

11-19-2012, 10:44 PM	eBay Motors #23 (permalink)
Stevenmc89 Senior Member Join Date: Nov 2012 Location: Enterprise, Al Posts: 326	Alright I hooked the predator up on the way home and when I went to pull a normal hill in 5th that was never a problem before it had no power. It read boost 22 psi, MAF 254 g/a, iat 64, ect 154, outside temp was 54 and the one that got me was 78% engine load! Also the turbo seems a lot louder. Boost leak? __________________ 2002 LB7 CC/SB 4X4, 6" RCX LIFT, 37" TERRA GRAPPLERS, 18" KMC HOSS, K&N CAI, EDGE EVOLUTION CS, STRAIGHT PIPE, NICKTANE, RANCHHAND BUMPER WITH 30" RIGID LIGHT BAR, AND OTHER DOO DADS

11-20-2012, 01:22 PM	eBay Motors #24 (permalink)
Stevenmc89 Senior Member Join Date: Nov 2012 Location: Enterprise, Al Posts: 326	Ok double checked everything and it looks fine. Took programmer off which took forever saying it can't communicate then took it for a spin then checked codes u1000, p0380 for glow plugs, and p1781. Could this p1781 be causing the problems??? If so what do I need to do??? __________________ 2002 LB7 CC/SB 4X4, 6" RCX LIFT, 37" TERRA GRAPPLERS, 18" KMC HOSS, K&N CAI, EDGE EVOLUTION CS, STRAIGHT PIPE, NICKTANE, RANCHHAND BUMPER WITH 30" RIGID LIGHT BAR, AND OTHER DOO DADS

11-20-2012, 08:08 PM	eBay Motors #26 (permalink)
Stevenmc89 Senior Member Join Date: Nov 2012 Location: Enterprise, Al Posts: 326	One battery is maybe a 6 months old and the other is 2 weeks old. One of them had a bad cell that showed up when our cold spell hit a couple weeks and I didn't have the money to buy both at the same time like You're suppose to do. __________________ 2002 LB7 CC/SB 4X4, 6" RCX LIFT, 37" TERRA GRAPPLERS, 18" KMC HOSS, K&N CAI, EDGE EVOLUTION CS, STRAIGHT PIPE, NICKTANE, RANCHHAND BUMPER WITH 30" RIGID LIGHT BAR, AND OTHER DOO DADS

11-20-2012, 05:30 PM	eBay Motors #25 (permalink)
beanpole209 DuramaxForum Veteran Join Date: May 2008 Location: Tuscaloosa, AL Posts: 1,090	Ok, the P1781 is a TCM code, low voltage or something like that IIRC. Maybe one of your batteries are low? I'm thinking that if initial voltage is too low, the TCM will throw that code, could be wrong. It could also cause other problems if your batteries are low.

11-21-2012, 10:50 AM	eBay Motors #27 (permalink)
beanpole209 DuramaxForum Veteran Join Date: May 2008 Location: Tuscaloosa, AL Posts: 1,090	Ahh, well. Ive gotten to were I buy the 3yr warranty batteries because they normally conch out around 2. I found, for whatever reason that the top post/side post batteries have more CCA's too, and it makes it handy having the top post.

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