TheDude

You can buy them new on Rockauto for $10 Founding Member of the Comanche Preservation Society

I have them in Pittsburgh PA. Where are you located? Founding Member of the Comanche Preservation Society

Founding Member of the Comanche Preservation Society

I have two black dashboards here in PA. Founding Member of the Comanche Preservation Society

Well I did try partially clamping the fuel line out of the tank to lower the pressure to see if ran better and no difference at all. The fuel injector sprays the throttle plate evenly, but it's hard to tell how fine the spray is. For the fuel pressure is 4 psi too high bad enough to cause a rough idle? I've also read the return lines sometimes get plugged causing raised pump pressure, do I just take the return off the TB and blow it out? Founding Member of the Comanche Preservation Society

So here's an update: Found a matched ECM local by chance, plugged it in and both ECT and IAT read perfect. So I started it up and it was the best it's ever ran for me. I figured cool that solves that problem and moved on to replacing all the brakes, lines, calipers etc.. I go to run it again today it's running rough, BUT it's not running super rich like it was before, O2 switches, Temps read good, everything I see seems good except the map seems a tad low. Checked the fuel pressure at the filter and showed 19psi. Tried lightly clamping the hose to bring it down and it didn't run any better. Sprayed the intake with brake clean to check for intake leaks but no dice. I sound like their may be a exhaust manifold leak? The exhaust is trashed so it's really loud regardless any thoughts? Founding Member of the Comanche Preservation Society

Founding Member of the Comanche Preservation Society

I have one in Pittsburgh. Founding Member of the Comanche Preservation Society

Anyone have one from a running truck? Founding Member of the Comanche Preservation Society

I have a short bed set but they move been painted over. Founding Member of the Comanche Preservation Society

That makes sense now. So I have a spare ECM of the same year and setup and when I hook it up all the temp sensors read correct. A good 60 degrees more than with the original ECM. But this ECM isn't known good and I lose spark when it's plugged in so now I'm thinking they're both bad just in different ways. Founding Member of the Comanche Preservation Society

This 86' doesn't have a c101 so I'm having a hard time finding info for testing. The IAT shows 1.3v in and has ground. I for the life of me cannot find info on what sensor should get what voltage and I have an 86' Comanche manual I've been looking through. Founding Member of the Comanche Preservation Society

This is an 86' I thought the first year didn't have the c101 but maybe I missed it. Founding Member of the Comanche Preservation Society

So we replaced the coolant temp sensor and now the coolant and intake temp sensors are reading negative values on the scanner. MAP reading 30hg as well. Unlikely both those sensors are bad, so is there a ground both of these share? I also replaced battery to block neg cable and added ground to rad support. Block to firewall ground has already been replaced. Front most manifold bolt is broken, rest are tight. Founding Member of the Comanche Preservation Society

Thanks for the pressure port info. My friend out the pump in himself so that shouldn't be the issue but I would really like to know for sure. The O2 is old and reading high but that would be correct if the Jeep is running overly rich. Founding Member of the Comanche Preservation Society

I've been working on my good buddy's 86' 2.5 4 speed 4wd he recently purchased. He put a fuel pump in and it runs consistently but it's very rough and very rich. I'm not as well versed on the TBI setup so the stepper motor and the crazy intake setup threw me for a loop. Also no port for checking fuel pressure is making diagnostics difficult. Anyone have some good ideas on likely suspects? I have an MT2500 BTW and MAP seems to be reading correctly and engine vaccum seems good as well. Founding Member of the Comanche Preservation Society

I doo have a nice pair but I'm quite partial to them myself. What stuff do you have for trade? Founding Member of the Comanche Preservation Society

You found more? Founding Member of the Comanche Preservation Society

Yinz looking for these? Founding Member of the Comanche Preservation Society

If you change your mind is pay you for the trouble! Founding Member of the Comanche Preservation Society

Which style are you looking for? Founding Member of the Comanche Preservation Society

Are those factory fogs? I'd kill for that whole header! it matches my 90' Laredo perfectly, pinstripe and all. Founding Member of the Comanche Preservation Society

That's an awesome score! Founding Member of the Comanche Preservation Society

I'd consider letting some go. I also just looked at this factory book from an 89' Cherokee that has a spot for it. Founding Member of the Comanche Preservation Society

I always heard you were supposed to be able to slam them in and get one use out of them. But I honestly have no idea. I now have eight of these because the guy wanted rid of them. Founding Member of the Comanche Preservation Society