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Old 12-26-2007, 12:38 PM
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Codes

So I havent made to many posts on here, but I have read alotand learned alot.

So now I have a couple of questions for you guys. Last night on the way home I buried my foot into the injector pump while climbing up a nice hill. About 2/3rds up the hill the CEL came on. I took a look at the gauges real quick and noticed that the EGTs were at about 1200 and the bost was at about 24, 26 pounds. When I got home I put my code scanner on and found out that I had codes P0238, P1211, and P1249. What exactly do they mean, and what do I need to do to get rid of them. I read some other posts, and I saw your answers, but I didnt understand alot of the accronims. So laymens turms please, and recomondations on to wich brands/models to buy to fix it.

The other question I have is do any of you have a weird surge from your alternator? Mine hits 14.5 volts then drops to 14. This causes the lights to flicker at idle, and I can hear the engine kinda surge with it. This happens pretty rapidly.

I have 4" Magnaflow exhaust turbo back. AFE stage 1 with tourqe tube, some 3-positon chip that was in the truck when I bought it. 4" lift with 35 and gauges.
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Old 12-26-2007, 03:38 PM
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P0238 Turbo Boost Sensor A Circuit High Input
P1211 ICP Not Controllable - Pressure Abow/Below Desired
P1249 Wastegate Fail Steady State Test

Okay, I assume your rig is 99-03, so the High pressure oil system set the 1211 code, probably couldn't supply enough pressure/flow on the hard run.
The 0238 is simply acknowledging that there was an over boost condition.
As far as the 1249, I'm not sure.

As far as clearing codes, your scanner should have a function to clear trouble codes
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Old 12-26-2007, 03:49 PM
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Have someone do a injector buzz test and a HPOP test with a computer like an auto enginuity one, or one similar to a dealership computer that you can take along in the truck and monitir everything. recreate the conditions, and make the truck pull the codes again, and see what your High pressure oil pressure system is putting out. Should be somewhere in the 2700-3000 PSI range for a good working pump when pulling the hill. The alt. seems fine. you could take your truck to Auto zone or whatever and they can test the charging system.
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Old 12-26-2007, 04:36 PM
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Yes its a 2002. Sorry I didnt give the year.
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Old 12-26-2007, 04:43 PM
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the cel light is gonna come on on that truck when you accelerate with a chip installed , they all do it and the only way to fix it is to install dual high pressure oil pumps at the tune of around 2500.00, thats where the p1211 code comes from, the other code is an overboost code and a simple boost fooler will take care of that , there are several vendors n this site that sells those , bottom line is the factory high pressure oil pump will not pump that volume of oil needed to kepp up with injector demand therefore turning the light on, the oil is aerating inside the oil rails
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Old 12-28-2007, 03:19 PM
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Would installing bigger injectors make a difference? My other question about the alternator is that the battery light comes on and off contentiously.
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