1991 mustang 2.3l losing power just wanted to know why? - Mustang Evolution

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Old 12-16-2011, 10:45 AM   #1
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1991 mustang 2.3l losing power just wanted to know why?

I have a 1991 mustang lx 2.3l here lately through first and secound gear it really loses power then all of a sudden it will kick in really hard not to sure why? i have already done a complete tune up including the timing belt and brand new fuel pump, still running horriably, if anyone knows anything Please ill take any advice im all out of options,
Thanks
-Dakota-
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Old 12-16-2011, 11:39 AM   #2
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1991 mustang 2.3l losing power just wanted to know why?

ignition module or stator in the distributor..
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Old 12-16-2011, 12:06 PM   #3
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1991 mustang 2.3l losing power just wanted to know why?

Agree with what MK says on the mass flow sensor, however having a 1991 2.3L (in a Ranger) I've found the fuel filter will clog and starve the engine. The ethanol in today's fuels frees up lots of deposits and debris accumulated over the years. When first introduced on the supply side, debris appearing like small pieces cellophane were initially freed. For the cost, it's a cheap thing to try, and good maintenance anyway. I change mine every other oil change.

I also use NAPA Gold, as cheaper filters have glued-together (vs. spring compressed) internals that can separate. You don't want filter failure resulting in debris making it to the injectors.

Best wishes on your 2.3
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Old 12-16-2011, 12:20 PM   #4
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1991 mustang 2.3l losing power just wanted to know why?

being that the car is injected and there is no carburetor the valve thing isn't it. i agree with the ignition and distributor answer but also add that you might need to clean the mass air sensor .. is there a check engine light on or not. if so get the codes check and that might give you some help .
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Old 12-16-2011, 12:52 PM   #5
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1991 mustang 2.3l losing power just wanted to know why?

Power valve in the carburetor.
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