I had hijacked and posted a few times in another thread but figured I should be polite and start my own. My '91 4x4 p/u, 22RE, started running crappy. Acted like a fuel line prob - like it wasn't getting gas (stalling, etc.). Changed the fuel filter (what fun) and you can hear the fuel pump running when the ignition is turned to "on" so I'm fairly sure it's not that (especially since I could smell a lot of gas). After changing the fuel filter, it will run (barely) but seems to be running vey rich (black exhaust smoke) and is missing. I finally figured I'd check the codes even though the CEL wasn't on - it did give me a code - 13 which indicates the distributor. (Since resetting the codes and running for a short time it has not given any code at all). Plugs look bad like it's been misfiring. Distributor seems ok - gap is ok, cap has no cracks, rotor looks fine, resistance on wires is ok, etc. Resistance on coil is ok but I get nothing on the ignition control module, which is why I am now suspecting it is the problem, but I'm not sure. Anyone know how to test it? Autozone says they can't test this particular one, all the other part stores say they don't test them. New ones run $250-$300 and I'd kind of like to know that the module is the problem before spending that $ on an electrical part that can't be returned. I've been through the Pick-A-Parts to find one just to throw on the truck to test but haven't been able to find one. Regular junkyards still want $100 & up (for a 20 year old part that might burn out tomorrow? no thanks). Any advice would be appreciated!