Question about 1997 Ford Mustang Cobra

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My check engine light came on and I have a code of P0304

I have a '97 Mustang 3.8 v6 5 speed. My check engine light came on and then the car started to shake violently. At higher rpm's its get better but at idle its noticeable. I pluged an actron pocketscan plus into the car and it gave me a code of P0304. I understand what it means but what would be my best course or action?

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  • nicholas tuttle Jun 06, 2010

    what does the code mean?



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You probably have a loose plug wire on #4 cylinder.

First check for that. If that doesn't help, make sure the injector electrical lead is secure.

Next, replace the spark plug on # 4. If that still doesn't help, then a new injector might be needed. Before springing $$ on a new injector, add a bottle of Techron to the fuel and drive it. Techron will clean up a clogged injector better than anything out there.

Good Luck!

Posted on Jun 07, 2010


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