i have a 91 mustang built 331 fuel injecteddidnt drive it for a few weeks then when i drove it the car ran fine intil it warmed up then it felt like it was running out of gas then it would run fine and just keep doing the same idle surging i changed the coil and temp sensor do any of you have any ideas the car is mass ais
sounds like condensation in the gas. Put some dry gas in it, run it till its almost totally empty, then fill it all the way up with premium, and another bottle of dry gas.
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