Number of cats and O2 sensors.

California emissions will have 3 cats and 4 O2 sensors. 48-state varied between 2 and 3 O2 sensors with a single main cat

 

Go here, and run your vin. It will tell you what emissions is was built with.

 

I finally found a PCM on E-Bay that matches completely. I should have it by next weekend and can install it then. Assuming everything works and I get no more trouble codes, what is involved in the re-flash?

Is it dealer only or can my BIL/family mechanic do it? What is a reasonably price range that the dealer would charge? How long will this take and what info will they need.

I would much rather the BIL be able to do this. I know and trust his work.

Thanks
Steve

 

Just need a fairly high zoot scanner. Someone that has the correct tool, can likely do the job in under ten minutes. Most shops will charge an hour labor though.

 

The replacement ECM arrived yesterday and I installed it. NO change! Same code and results. I talked to the BIL/mechanic, and we agreed that two ECMs failing the exact same way would be astronomical odds. So my original ECM went back in.

I tried ringing out everything again and got good numbers on all points, until the ECT connector pulled itself apart. I put it back together and drove into town to pick up the grandson. On the way back the temp gauge kept trying to work, as in it would read for a minute and slowly go back to dead cold.

After dinner I took the old connector pigtail that I used to test the ECT and hooked it up to the ECT wires with some jumpers. EUREKA!! Temp gauge works, codes cleared and NO lights on the dash. Tomorrow I will solder and heat shrink the replacement in and be done with this debacle. The BIL told me I did my due diligence and it would turn out to be something simple/stupid that fixes it.

The good news is that I have 30 days to return the other ECM.

Thank you for all your help
Steve

 

I have the same exact problem you describe in this long post, when you say that you put jumpers in the connector wires and that fixed it where did you jumped the wires to?

 

I replaced my PCM with another one and like you I still have code P0118, I'm at a loss as to what to do next to resolve this issue..

 

Have you replace the sensor??

 

Yes I did install a new sensor and replaced the PCM with another one they flashed my VIN number to, also replaced the the thermostat, still the same code and if I clear it with my reg. scanner as soon as I open the ignition it comes right back.

 

I only have a test light, I unplugged the connector, checked the wires, the black-blue wire has good ground, but the tan/black wire has not power going to it, this is with the ignition open and the engine not running. Also did the cluster test and all the gauges work..