2003 with issue of miss fire while accelerating - Ford Mustang Forum
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Old 10-09-2019 Thread Starter
Msstoner6's Avatar
Joined: Jul 2019
Posts: 2
2003 with issue of miss fire while accelerating

After driving to Charleston for the weekend went to leave the next day and when accelerating got lots of sputtering lightly giving it gas won’t do it. So changed fuel filter no change changed plugs and wires thinking could be the problem didn’t change no check engine light came on but still put tester on and had iac code so changed that still having issue then changed tps sensor and still the same issue please help

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Old 10-10-2019
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Joined: Aug 2011
Posts: 5,748
Run a cylinder balance test with your code reader. It’ll help determine which cylinder/cylinders are misfiring. It could be a fuel injector issue. https://dannysengineportal.com/cylin...ing-made-easy/

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Old 10-10-2019
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Joined: Sep 2010
Location: Houston
Posts: 6,810
Don't discount the role that a charging system problem could play here.

Also don't discount the role that excessive EGR flow could play.

+1 regarding fuel injectors. Perhaps consider an injector cleaning and flow test service such as InjectorRX.com.

Howto perform charging system voltage drop test

2003 GT Convertible (sold & missed)
2000 GT coupe (Craigslist project. Fixed. Now my DD). Windsor to Romeo swap.
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