Manifold Absolute Pressure code???? - Chevy and GMC Duramax Diesel Forum
07.5-2010 LMM Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect

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Old 07-16-2009, 08:25 PM   eBay Motors  #1 (permalink)
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Unhappy Manifold Absolute Pressure code????

My truck keeps throwing Manifold Absolute Pressure code. This past winter it did it quite a bit when it was real cold out. I was at the dealer one day picking up some people and stooped in the service department. They told me it was the cold weather doing it, they also said they were getting a lot of calls about it. Well it seemed to stop until the other day. Now it is doing it a few times a day. Anyone else have this happening to their truck? I have the Edge Juice w/ attitude on my truck and was also thinking if I should take it off before I take it to the dealer, should I?. My service air bag light is on also.
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Old 07-16-2009, 08:34 PM   eBay Motors  #2 (permalink)
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Remove the edge and see if the problem still persists.
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Old 07-16-2009, 08:56 PM   eBay Motors  #3 (permalink)
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Quote:
Originally Posted by Hondarider552 View Post
Remove the edge and see if the problem still persists.
X2 first thing to do is remove the tuner
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Old 07-17-2009, 05:30 AM   eBay Motors  #4 (permalink)
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I will do that first thing this morning.
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2008 GMC Sierra Ex Cab 2500HD 6.6L LMM Z71
Edge juice W/ Attitude
Skyjacker front level kit
Boss Power VXT Plow
Lubed by AMSOIL
http://www.specializedpowerservices.com
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Old 07-17-2009, 07:39 AM   eBay Motors  #5 (permalink)
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I had this issue with my 08'LMM my truck went into reduced power mode and had a map sensor code, The dealer said the depth of the sensor had to be adjusted and there is a TSB for this issue after they did the adjustment I have not had the problem sense
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Old 07-17-2009, 07:50 AM   eBay Motors  #6 (permalink)
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Well I toke the Edge unit off but have not drove it yet. I have to take it in for the air bag thing. So I will tell them to check it all out. Man I want the bugs worked out of this truck so I can delete the stock exhaust.
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2008 GMC Sierra Ex Cab 2500HD 6.6L LMM Z71
Edge juice W/ Attitude
Skyjacker front level kit
Boss Power VXT Plow
Lubed by AMSOIL
http://www.specializedpowerservices.com
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