1994 Mustang 3.8 - Ford Mustang Forum
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post #1 of 10 (permalink) Old 09-09-2019 Thread Starter
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1994 Mustang 3.8

I have a 94 mustang that has over the past 6 months has went from running fine to running like crap. It will now misfire at random and then just have all the power back. I have had no luck getting it to run right. So far I have replaced the following: Spark plugs, spark plug wires, coil pack, throttle position sensor, camshaft position sensor, and I have cleaned the maf. This car is honestly making me go crazy

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post #2 of 10 (permalink) Old 09-10-2019
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I suggest to recheck all electrical connections and grounds,just to be sure.
Then i would suspect a bad fuel injector.

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post #3 of 10 (permalink) Old 09-10-2019 Thread Starter
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How would I go about checking the fuel injectors?
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post #4 of 10 (permalink) Old 09-10-2019
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Not having very much info so I'd suggest looking at your fuel filters, if they haven't been replaced in the last couple of years. They are less expensive than fuel injectors. If you can pick up a fuel pressure test kit (from Harbor Freight or someone), you can check the fuel supply from your in-tank filter.
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post #5 of 10 (permalink) Old 09-10-2019 Thread Starter
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I forgot to mention the fuel filter is brand new. Sometimes the car when it misfires it literally sounds cammed
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post #6 of 10 (permalink) Old 09-10-2019
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A scanner should tell you which cylinder the misfire is on.If so,you can just change that 1 injector and see.


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of an eye,they can be gone.

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post #7 of 10 (permalink) Old 09-11-2019 Thread Starter
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Every time I have hooked up a scanner it says too lean and too rich at the same time
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post #8 of 10 (permalink) Old 09-11-2019
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While it is running and missing-use a long screwdriver to listen to the injectors.a sharp tic is fine,but a dull or no sound and you found a bad one.


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post #9 of 10 (permalink) Old 4 Weeks Ago Thread Starter
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Still have yet to figure it out, Not sure what to do now
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post #10 of 10 (permalink) Old 4 Weeks Ago
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What codes did you get? What were there numbers?
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