I will check the thread. My regulator is leaded in at the bottom so I don't have the adjustment capability. I can recheck the fuel pressure but I am pretty sure it holds the pressure while its off. I had the gauge hooked up to it while testing something and I never remember it dropping. I've been wondering about the injector. That, along with the 3 other things, hasn't been changed. I did change all the gaskets, O rings, and cleaned up the throttle body but didn't change the injector.
Can I back up for a second. Why do you think it's not the signal on that B terminal that's causing my problem? Since the only way the engine changes is when you mess with the map sensor. I hold good solid vacuum, about 14.5-15 constantly without fluctuation so that should eliminate a vacuum leak right? Wouldn't it be showing up even if it was minor?
I checked the tstat neck with a temp gun and I know it was 190+ but I had to work it to get it that high. I'm going to swap in the 190 stat this weekend.
I will check the O2 with that info. I think the Chiltons had me measure the ohms? Between the wires. It was in spec but I hate those vague measurements.
I did not check the manifold for cracks but I did take them both off because I wanted to check for blockages and leaks so I think along with holding solid vacuum that might not be my issue? I've used propane around the manifolds and such and never had a surge but I'm slightly Leary of that test since the motor is not really in a state of knowing what it's doing anyways.
I may have led you in the wrong direction. I don't think I used the trick with the 9v battery but I did change out that entire module. I adjusted the wot sensor where you have to get it within the certain voltage.
I hope I don't come across and wanting to argue with you that's not my intention. I'm just trying to make sure you know what I know because you clearly know what your doing. But I have been up and down this thing with whatever I knew how to do. You've got me excited now though, I'm ready to finally kill this problem.
I'm right around Detroit but I'm splitting my time in Virginia bc of work.
Let me throw one more thing your way. Back before I changed nearly everything, one of the first things I changed was that idle something control. Whatever the unit is that directly contacts your throttle linkage. When I hooked that up for the first time the thing purred like a kitten. Like an idiot I turned it off after a couple minutes without checking anything. When I restarted it went right back to surging. If I remember correctly, during that time of running correctly the O2 sensor wasn't connected and one of the temp sensors. It does the surging whenever everything is hooked up correctly. You can stop it by disconnecting the vacuum source to the map and actually drive it without hard acceleration. Cold weather or introducing a vacuum leak improves it a little more but the plugs run lean and obviously that's just a bandaid.