Okay...more on my ChalkAttack rebuilt EA82, SPFI (or TBI, however you want to call it). 88 Wagon GL, 4wd, manual, etc.

 

It's still running rich, it seems... New O2 sensor, etc.

 

The TCS needs to be replaced...only cools off to 1400 ohms. But warms up okay (all way to 300 ohms). I don't think this would affect much except my cold start/fast idle. NorthWet, you had mentioned looking at that sensor...would you happen to know where I can find new ones?

 

Anyway, I tested the fuel pressure going IN to the throttle body (after the dampers and filter). It runs at 25 psi and holds at 20psi when shut off.

 

Haynes claims the spec to be between 17.5 and 24 psi. Could this higher pressure be causing the rich running? What would be considered good pressure specs? Should I shoot for a new pressure regulator (old one has 240k on it)?

 

Could this rich running contribure to my misfire when cold (at dile and even while revving)?

 

I tried searching the forums for this but it's really difficult to tell what some of these threads are talking about just by their title!

Bump; other notes...

 

Piston 3 doesn't fire when under a certain temp (what the!?). It's getting electricity, plug coloring looks normal, and runs fine when warm/hot. But just not when cold!?

 

TPS isn't exact...old and inaccurate. Could this be running the thing rich?

 

Car runs smoother, in general. 400 miles into the initial 500 break-in. Wee! Still that richness seems to be only problem. (and it was a problem before, actually).