Hello all.... Several weeks ago my check engine light came on. It said that the MAF sensor was bad. Probably was, as the previous owner had been driving around with a bad air box thermostat. Anyway, replaced the MAF with a rebuilt one from IPD and now I keep getting a 3-2-2 code. Oh, I have a 1991 240 with the LH 2.4. The code is when the diagnostic wire is in position 2. I realize it is the WIRE BURN OFF not working code. I tested the MAF Ohms (per Bentley) and did the burn off test. (retracted the MAF rubber boot back and put a test lead on the White wire, Revved the engine to 2500, settle to idle, and then shut off, and 4 seconds later I DID get a voltage increase. However, my digital voltmeter read .108 when it surged. All the information I could find was regarding the LH 2.2 which says it should be 1 volt. I can't find anything that says what the voltage should be. The Bentley manual just says there should be a positive deflection (if I remember correctly).
So, I am only getting a tenth of a volt at .108. Is that right?? I tested the main relay (per Bentley) and its good as well. Also, I changed out my ECU with another one and its still giving me the same code. I am pulling my hair out trying to figure this one out and I don't have enough money to just keep buying and replacing things.

Anyone have any ideas? could the rebuilt MAF sensor I just bought be bad? or could it be I have two bad ECU's. BTW, I did check all the connections for corrosion. Thanks in advance :)

Scott in Dallas (Hot as Hell here)