Hello from OK.

[mdpierce8]

Hey all. I guess I need to introduce myself. I've been a GM enthusiast for many years and have always lurked on these forums and other like it to see if any info would help me with my projects but I've never signed up to post on one before so this is a first for me. I have a soft spot for 80s, 90s, and early 2000s GM vehicles, they remind me of times I grew up in. 

Right now I've got a 1991 Pontiac Grand Prix SE 3.1L LH0 as a project and I daily a 1997 Pontiac Sunfire GT 2.4L LD9. I rebuild the Sunfire Quad 4 engine from the ground up a little more that a year ago; machine work done on the block, cylinders were bore .020 over, mild exhaust cam, new head. Nothing too crazy but it really runs like a top and I only have to fill up the tank on it once a month haha.

The Grand Prix 3.1L started out with a really loud knock in the bottom end of the engine. The odometer only read 79k when I bought it. Come to find out after pulling the engine and tearing it down it had a bent connecting rod on number 1. I think it got really hot at one point. I didn't have the money to do too much with this at the time so I found a donor connecting rod and piston, bought new rings for all pistons, new gaskets, and slapped it all back together. The crank, rod, and camshaft bearings still looked really good and there were no lips on the cylinder walls so I believed the odometer at this point. It runs great now, but now I'm dealing with an ECM issue. I think the pins on the ECM are either dirty or loose because the ECM is losing voltage and resetting itself. I would really love not having to go through the whole idle relearn process every time I want to drive it haha. OBD1 is fun!