Re: 1990 Ranger nightmare won't run
well, while checking the compression on the rest of the cylinders I replaced all the spark plugs, compression was good on all six cylinders. I was able to get the truck to kinda run as long as I kept rapidly moving the throttle. it ran long enough for some codes to get stored into the computer. I pulled the codes and it said the MAP sensor was out of range - or some such thing. any way, I replaced the MAP sensor and my truck is now running great. thank God!!! thanks to everyone for your suggestion.
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