Hello all, I am about ready to run my 89 240 off a cliff. After replacing every sensor in the 240 I am still getting a 3-2-2 (maf wiring) I’ve gone through 2 sensors so far with the same result. (One oem from IPD and another cheapo from eBay). All connections seem good with good voltage as well. (I also replaced the air intake box thermostat which I believe to have been the source of killing the original MAF) At times it will seem to run fine, cold and hot starts are good too, but every once in a while the code will go back on and hot starting will crank over a few times before firing up. Any help would be great. My next step is to check the ECU.

ps: I have also replaced the o2, coolant temp and coolant temp ect sensors along with multiple vacuum leaks.

any help or direction would be great. Thank you