1987 GMC S15

Engine Performance problem
1987 GMC S15 6 cyl Four Wheel Drive Automatic 189900 miles

when it was warm out it would start and run fine. Now its cold out 50 degrees and it will start then as soon as you hit the gas it pops and dies it also runs funny when your driving down the road spiting and sputtering. It has to run for a good 6 mins before that stops. I have changed fuel sending unit, new tank, new lines, new map sensor motor was rebuilt and only has 50,000 miles on it new coil, new plugs new wires I am desperate for help
November 5, 2010.

Any applicable trouble codes. Use a gage and check fuel pressure. If the problem is temp related, check the coolant temp sensor.

Nov 6, 2010.