Leaderboard

3100s were tougher. 94-95 3.4 DOHC still had socketed MEMCAL/PROM. 3100s on the other hand, I believe they were flash PCMs like the 96 OBD II PCMs. I don't know that anyone ever got into the flash PCMs.

Got ahead of the curve on this one. Last year I had my tired A/C Compressor swapped out for a new one. Bought an A/C Delco compressor new. Flipped the switch the first hot day around here a few weeks ago. Nothing. It was the "every year's plague" of re-filling the system with fresh R-134. Only this year this trick did not work. Nothing. Fortunately I have found a place that is willing to work on these 3.4 motors, a local Chevy Dealership with a mechanic that's got a 53 years experience track record who knows these motors. As usual I buck-shotted this repair, I sent the car in with a trunkload of NOS parts, even including another new Delco Compressor. Turned out the low pressure line and the valve was toast, major leaks. All is well (and cold) now, just in time for a long South Carolina summer. Which starts this week, going by the predicted temps. Looks like I get to put that New Compressor on the shelf for next time. And we all know that will be a next time down the road........