hello all

I am losing my mind trying to get this resolved. I know what these codes mean and have been searching and trying to resolve for the last 5 months.

Well these are my codes:
P0100
P0110
P0446

I have replaced my MAF 3 times. 1 year warranty on a reman.
New o2 sensors. New thermostat. I always run clean fuel and cleaners every month.

My last and final thought is a bad PCM. When I search some have stated they have reflashed their ecu. When I search to buy PCM I also see a ECM relay. Relay?

Just want to get your guys thoughts or hopes that you guys have solved a similar issue?

Thanks in advance

 

P0100 and P0110 malfunction description is open or shorted. The problem is not the MAF, the problem is the wiring harness that gets connected to the MAF. Therefore, you would need to find the open/short in the harness.

P0446 check for any crack hoses from the EVAP lines. If all is good then the VSV is bad.

 

I have checked all of the exposed wiring from the MAF and not seeing any glaring issues. I really don't want to cut into the plastic wrapped portion that goes around the engine. Also opened up the portion connecting to the ecu and that's all pretty clean

 

Yep^^^ the hoses in the bay may be dry rotted or cracking. There should be a feed to the intake manifold and a feed at the air intake piping. There are 2 vsv's, one on the manifold feed and one at the gas tank. The gas tank one is the most common to go bad, as is it more exposed to the elements.

There are a couple real good threads around here somewhere that detail getting to, testing, and replacing the one at the gas tank location.

GL!

 

okay, so after fiend's post I went and did another inspection. After looking at the harness and restarting my car I noticed that it was greatly affected in worst way. at least for the mass air flow coach I think I found the culprit now I just need to find out how to fix it. has anyone done repairs on the mass air flow harness? thanks again guys for your input.

 

So what exactly did you find? Broken/crushed/cracked wiring?

If so it's just a matter of getting some wire and cutting out the bad and soldering in replacements. Not to difficult once you cut the harness open and know where the bad section is.

 

they were no glaring issues like cut wires or exposed wires. But there was but affect on performance after inspection and pulling im pushing on some of the wires. I guess I'm still a little in the dark but it did look like a center penn wire was moving a little bit more freely. I'm gonna take apart the harness to see what happens

 

sorry for the typos damn touchscreen autocorrect b s