Ok, my engine has been giving me a code 42 and 44 (82 TA with 305 4bbl) and I need some info on how to diagnose whether it is the EST, ECM, Direct Ignition System or fuel cutoff relay circuit. I ask because my car is blowing gas out of the carbeurator, and has been doing so ever since it overheated bad one time. I replaced all the plugs, the wires are a year or so old, replaced the O2 sensor and it's running better, but still blowing gas out the carb. I have searched for this info but the results I have gotten haven't been much help for a 4bbl. Any advice is greatly appreciated. BTW, where is the ECM located exactly? Thanks

 

There is a good possibility that the float is sticking or the fuel inlet valve is leaking. Either of those can cause flooding and overflow of fuel from the carb. Repair that condition, then diagnose the other error codes.

The ECM is located in front of the dash on the passenger side, above the lower trim panel.

 

Ok, to back up, when my car was giving the code 44 and 42, it was also giving 15 (low temp) and 24 (VSS). I have replaced the O2 sensor and reset the ECM and now it no longer gives me codes 44 OR 42, while still giving 15 and 24. My speedo quit working a while back, so 24 is viable, and I'm running a 160 degree thermostat, so both make sense.

My question, is could either of these be what is causing my car to blow gas out of the carb? The only time it really doesn't is at idle, but it doesn't idle well and has the tendancy to stall sometimes. The hotter day it is outside, the better the car runs. The more of a load the engine has, the more gas it blows out the carb, the quicker i accelerate, the same happens. If I barely give it gas and crawl to operating speed, it seems to do alright, depending on how hot it is outside, engine load, and how fast I am driving (seems to like 45 a lot, 60ish when hot). On flat highway running 60 mph on a hot day hardly any popping, hit even the slightest incline and popping increases.

Could this be either of these 2 errors? My plugs are new and gapped, wires are pretty new (couple years maybe?) but I checked most of them and they are performing well, new distributor cap and rotor, old coil though. Any ideas? This is the daily driver and budget is very limited (college student w/ part time job). Thanks for any input.

Also How can I do that on the factory carb, how do I check, would a can of carb cleaner help?