My problem is the engine won't start. Cranks good, have checked fuel pumps front and rear pressures and are within specs. Checked the fuel regulator, removed ,cleaned and inspected the Idle air control including the resistance and voltage. I replaced the map sensor, throttle position sensor, temp. sensor, checked the coil resistance, the voltage at the coil with the ignition on and the voltage when cranking the engine. I checked the pick up coil in the distributor and replaced the ignition module, checked the rotor, dist. cap, wires, engine compression is 150, checked the signal to the injectors and all checked out ok. If I spray starting fluid in the throttle intake the engine starts right up and runs like a new one, no miss fire, no blow by to the crank case. After the engine starts and warms up it will start up every time after that. Can the problem be the computer and where is it located?

hi, in august i started having a problem with my truck running rough to the point of stalling out and had to to hold the gas and brake to drive to a repair station, they dianostics showed 3 codes, map sensor, tps. so they cleared them and came right back so the tech suggest it was a bad wire, fuse or the computer was never able to pinpoint problem. lol so i pulled the truck out and brought it home it never started again, changed plugs , dist cap, rotor. the the fuel pressure regulator was leaking out into the vacume line going into the plenun, i checked the spark its good. just wont fire just cranks, you can here the fuel pump turning on when you turn key to on, has duel tanks tried switching to both just won;t start. any suggestions help pls