So I finally got around to putting my new lens for my 3rd brake light on the 4wd. New bulbs too. And we were once again working on my buddy’s Blazer. I really hate this truck, but he loves the blocky look of the early GMT400s interior so he gets to headaches with a Tbi engine. Yesterday we rebuilt the throttle body, and decided it needed a new idle air control valve too, and it has always hunted for a good idle. As he was leaving yesterday the power steering went out on him. Dead ☠ gone, just like that! WTF 🤬 so he brings the truck back and there is no fluid movement at all. I figure his pump shat the bed so today we get a new pump, fluid and an IAC valve. We get the pump installed fill with fluid and....
Nothing... no power steering at all. Again WTF 🤬. the idle is smooth at least and we are happy... then after a few minutes of the truck running while we are trying to get some life out of the power steering the truck hunts for idle again... grrr 😡. I hooked my Bosch 1300 up to it in hopes that we can get something out of this primitive computer and low and behold it actually gave me the PIDs that I needed to figure out what’s up. The LTFT was pegged as rich as it could and the O2 reading was showing full lean. Map and ECT was right were I would have expected it. The part that sucks is the O2 sensor was brand new when we installed the engine in the summer of 2019, but being a Bosch unit... yea...
Have I ever mentioned I do not like cold... so yea, I don’t, but I have been stuck working in the cold the last 2 days on a truck I hate... the things I do for friends. Good news is the issue with the power steering turned out to be air stuck in the system. After the truck sat for a few when we were cleaning up tools, my buddy went to leave and the power steering worked like normal. Thank god I do not have to put a steering gear in it.