mjw011689

I've got multiple codes popping up here. Vehicle is a 94 N/A with 160k. Little bit of back story to it... Drove the vehicle to work one day, went to go home and it could barely hold an idle, was misfiring big time, and throwing code 33 (left side o2/exhaust sensor). Decided to start checking stuff on that bank, and found one injector ohming out at 43, while all the others were between 11-16. Obviously one bad sensor, probably stuck open (judging by the rich smell).

I ordered the full set of injectors, but only installed the one for now just so i could get it home to really work on it (yeah, i had the plenum off and could have gone a little further to do all of them, but i was planning to re pull it anyways to do a bunch of other repairs all at once at home).

Anyways, got the injector replaced, and now it idles and runs just fine... however, after one ride home (and yes i cleared the code), it started throwing 4 codes. 32, 33 again, 34, and 42.

42 is the fuel temp sensor, which from what i've been reading, is more than likely bad if its throwing that code. Correct me if i'm wrong, but from what i've seen, that one's pretty much it?

As for the 34, (detonation sensor), the vehicle has already had the knock sensor relocation done. It wasn't throwing this code before, so i'm wondering if somehow i messed up the sensor when removing the plenum? Its bolted onto the back plenum bolt.

32 is the one i'm worried about... egr. i've been reading of the problems it can cause if the egr is bad. And i've also read that it can (and more than likely will) cause detonation, which would be giving me the 2 codes. But it wasn't throwing that code before replacing the injector.. Is there something i should be checking for that i may have messed up/plugged up wrong (vacuum line possibly)? or is it possible that somehow the egr just took a crap coincidentally?

After going from only one code for the left side o2, and replacing that injector, I find it hard to believe that more stuff is going bad all at the same time, and i'm more inclined to believe its one thing causing multiple codes, or that I may have misconnected something?

Any info would be great!