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Duramax Third Generation: 2006-2007.5 (LBZ & LLY) Discuss the third generation (2006-2007.5 LBZ & LLY) of the 6.6L Duramax diesel engine & associated components. 2006 LLY engine discussion also belongs in this forum due to the similarities of the 2006 LBZ and the 2006 LLY. Engine related discussion ONLY.

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Old 10-08-2019, 07:14 PM   #1 (permalink)
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need help please po101 reduced power

i have a 2007 chevy silverado 6.6 and has engine code po101 for maf sensor and is in reduced power mode cannot drive it. i have replaced maf sensor with a ACdelco sensor,new dry air filter,egr valve cause a friend recommended and checked air filter tube for any leaks none found.generic scanner readings.calc load 19.6% ECT 126f,MAP 26(inHg),rpm714,IAT68(f),MAF 7.14(lb/min),FUELPRES4691(psi),comEGR 0,egr error 0,fuel level 59.2%,BARO29(inHg),ECUvolts 14.8,Ambient 61(f).any help or ideas would be greatly apreciated thank you

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Last edited by OkDually; 10-08-2019 at 07:17 PM. Reason: prefix/sig
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Old 10-09-2019, 02:51 AM   #2 (permalink)
duramaxforlife
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Do you have any boost leaks?

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Old 10-09-2019, 03:00 AM   #3 (permalink)
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https://www.dieselplace.com/forum/6189361-post4.html
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Old 10-09-2019, 07:11 AM   #4 (permalink)
Rvn4me
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You have a finger stick.
Post#7 https://www.duramaxdiesels.com/forum...ad.php?t=78400

Last edited by Rvn4me; 10-09-2019 at 07:18 AM.
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Old 10-09-2019, 01:35 PM   #5 (permalink)
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thank you very much i will test some things and let you know what i come up with.i noticed IAC i have read that the iac could be a issue .can anyone tell me were it is located on the 6.6 thank you
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Old 10-09-2019, 06:12 PM   #6 (permalink)
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ok so went through the link duramaxforlife shared .so when i tested terminal 2 at maf key off was in specs at 1.9ohms says replace ecm.so i jumped to next key off term 4 to ground for iat less than 5ohm checked at 1.8ohm says replace ecm,decided to proceed key on term 3 to ground had 12.16 and last tested volts between term 1 and ground was within spec 5.0v .so every test says replace ECM any diagnostics on pinpoint testing the ecm to know for sure its bad.and if so can i put a used ecm in it does it have to be programmed or can i just install one.thank you very much for the help
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Old 10-10-2019, 08:15 AM   #7 (permalink)
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Where’s home at? I have my stock 07 Classic ECM that hasn’t been used in 13 years you can have.

Last edited by Rvn4me; 10-10-2019 at 08:16 AM.
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