What is the cause for my GT to die upon start up after it sits a day or so?

65

Asked by devdod Nov 26, 2012 at 01:09 PM about the 2000 Ford Mustang GT Coupe RWD

Question type: Maintenance & Repair

I own a 2000 GT and now after it sits for longer than a day it doesn't want to idle properly upon start up. If i keep my foot on the gas pedal it will keep running and finally idle just fine. No issues after that. One time last week at a stop light it did want to die but that has been the only time it has done that.

5 Answers

105

It sounds like a spark issue, change out the spark plugs and see if the problem continues.

65

Thank you all for all your responses. I do need to change the spark plugs and will do that. I have been suspicious of the fuel pump as well and I will do the plugs and air filter first. I change the air filter every 2nd oil change and it is due. Thank you again and I will try them.

those mustangs a famous for leaking past the air cleaner that round thing after the air filter .its a black foam gasket that falls apart and wont seal causing the map sensor to read incorrect message from pcm

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