1991 Mazda B2600 Dies off when I give it gas, even in neutr

Hey Raz, I rechecked the fuel pressure about 39 psi with vac 44 without. Solenoid seems to work if the engine is at temp, I used mitchell test procedure. PCV valve rattles. There is no EGR to clean, unless it is called something else. Havent checked timing but going there next.

Hey raz, I meant the CEL comes on when the key is turned on and goes out when it starts like normal. More info, the ignition timing is right on at 5 btdc. I have found that sometimes the truck will run good, (engine will accelerate normally) for a period of time, maybe 5 or 15 minutes, and then go back to dying when the throttle is applied. This doesn't always happen. Will check that sensor next and try to pull codes. I don' have a code reader but I will see if I can pull with the CEL or MIL lamp. Good to hear you like the mat-su valley area. I live down in Girdwood. Thx 4 all.

Hey Raz, its been a while but Ive been diligently troubleshooting this intermittent problem. I loose the 5 volt reference for the tps sensor, sometimes. Ive checked it mant times but it was intermittent and I couldnt get it. I have made sure that the wiring to the ecu is good, 1 ohm sensor to ecu, and no shorts to ground or any where else. I also made sure that the ground has continuity to ecu and batt -. The other wire has continuity to ecu as well 1 ohm. I made sure that I can read the coorect sensor resistance all thru the range at ecu. I also get a 14 code for atmospheric sensor. Mitchell says thats a bad ECU also. Is my best set replace ecu. Send it off to be tested? Is there any manufacturer you suggest or would avoid. My 1st thought is Napa for about $500 for a new one. Thanx for all help so far, I had 2 throw ya more cash cause you rock.