LMM: Got some codes

TROJAN366

Gold Rush
Jan 13, 2012
2,474
1
38
MASS
I believe the 677, 674, and 671 codes are bad glow plugs in cyl 1, 4 and 7. I just looked them up earlier for my uncles LBZ. Search for p0101 im sure its here
 

Harbin_22

Active member
Dec 4, 2010
3,858
7
38
Southern Indiana
Need to replace 3 glow plugs. The P0101 could be a dirty MAF or bad. Could be an EGR related code too. Is it tuned? Sometimes there are ghost codes when you disable the EGR
 

DuramaxTireSmoker

New member
Jun 8, 2010
339
0
0
SW Florida
It is tuned for EGR Blocker and has a plate in. I cleaned and cleaned the MAF, cleared the code, and by the end of the day the code came back:confused: Should i drop the money on a MAF sensor? Cheapest I can find is about $215
 

C.Hern5972

KCCO
Feb 4, 2013
16
0
0
Texas
Does it have aftermarket Intake?I did mine and it kept throwing the MAF code. Put stock back on and no issues at all.
 

nar

Now with less _
Feb 7, 2008
199
0
0
Wyoming
LMMs seem to be really maf sensitive. Brother's went bad and it took a few days for the new one to work and not code. Have a neighbor's truck that sets a maf code and reduces power once in a while for a couple seconds then goes away and works fine. New maf and filter and still did it. Not sure why. Wish I could fix it for him.