Originally Posted by
Osofast2
Ok try one other thing before you spend a lot money ,yrs ago I had the same thing happen to me , on the back of the motor there is the TB ,you will need to remove the air cleaner box to get to it , you will need to pull out the TB plastic piece and there be kind like a big O ring around that about 1" deep with ribs around it clean this piece up as it can suck air in around it and can give the codes that you are getting ,also check and make sure the muffler is good and tight no leaks , the M112 motor is very sensitive to any kind air leak
Osofast, I'm one step ahead of you. Pulled the TB off a while ago, cleaned everything, cleaned maf sensor with electronics cleaner, got some dielectric grease to lube both gaskets/ o rings, checked all vac lines and getting ready to reassemble. Trying to find out how to troubleshoot the MAF with a meter in the FSM before I reinstall it all. No exhaust leaks anywhere. Thanks for the advice.
Mark