98 mustang 3.8l. Recently the car started having trouble starting, have to crank it over a lot, once it starts, its rough, sometimes stalling and have to crank again. Have replaced these parts in order. Fuel filter, o2 sensors, fuel pump, fuel pressure regulator, salvaged ccrm. Prob seems like a lazy ccrm, but have two of them (both used) and nothing changes. Almost seems like its flooding the motor on start up. When it does fire, if i touch the gas pedal, it will bog down and usually stalls. Runs fine after a couple minutes, and only does this after it sets for several hours. Also a/c compressor wont kick on, which led me to think ccrm, but prob could be unrelated (low ref, etc.). How do I test for power at the a/c compressor? Also which wires on the ccrm can I jump to test the prob? Any input would be very much appreciated.

 

Time to go back to the basics. Inspect wires and plugs, make sure firing order is correct. After verifying plugs and wires are ok, you may need a coilpack(don't throw money at one for now). Lastly, why do u think it's flooding, do you have almost raw gas out the tailpipe or does it seem to be choking(not enough)? I'll try to check back later. GL

 

Thought about it more, choking is def the right idea. No raw gas or anything. No spikes in fuel pressure etc. I plan on looking it all over real well tomorrow. Thanks for the input. Unlikely that both ccrm's have same faulty parts.

 

Yeah, start with the basics of the ignition system and go from there. If that all checks out you likely have a failed sensor.

I know this sounds stupid, but check the fuse box, a blown fuse is something easily over looked and can cause crazy problems.