Fox Bogs Down With Acceleration

[Triple white fox]

Hey all I got a stock 93 mustang 5.0 no mods what so ever. Went out for a ride today and wanted to give it some power. First gear seemed OK shifted at 5000rpm then when I went to 2nd and hit 3000rpm it's like I hit a governor the car just lost power and I had it floored. Did it a few times same thing happened. I kept it floored and it creeped to 4000rpm then power kicked in again but not explosive. Ithe also happened in 3rd gear also. Not sure if I have a bad coil, fuel filter, spark plug or none of of the above. Thanks

 

[mikestang63]

run the codes

 

[jrichker]

Dump codes sticky.
Look at the top of the 5.0 Tech forum where the sticky threads are posted. One of them is how to dump the computer codes. http://www.stangnet.com/mustang-for...codes-from-eec4-in-86-95-5-0-mustangs.889006/ I highly suggest that you read it and follow the instructions to dump the codes.

 

[Triple white fox]

I ran the codes . Thanks for the easy directions . I came up with 11 three times

 

[Triple white fox]

I also did the engine running code. After everything I got and eleven two times

 

[General karthief]

How long ago was the fuel filter changed? Check the usual things, fuel pressure, cap, rotor, wires plugs, coil.
Oh, and make sure one of your buddies didn't stick a banna in your tailpipe.

 

[Triple white fox]

Just bought this last year. It has 52000 on it. The only thing done was plugs and wires. Cap and rotor is still stock and fuel filter is stock. I'll change the fuel filter and see if that works

 

[Triple white fox]

I changed the fuel filter. I checked the cap and rotor and everything looked good. But I'm still having the same problem. Would it be mas is dirtyour, or another sensor I should look for.. all the vaccum hoses look good

 

[General karthief]

Have you checked fuel pressure

 

[Triple white fox]

No but I will. It's stock so what is the pressure suppose to read

 

[jrichker]

No but I will. It's stock so what is the pressure suppose to read

Normal is 37-41 psi, perfect is 39...

 

[Triple white fox]

Ok. Did the fuel pressure test. Started the car the gauge didn't even move. I let it run for about 10 min and the most pressure I got was 11 or 12

 

[General karthief]

Time for a fuel pump
Pop the vacuum line off the regulator and snif it, smell gas and that regulator is bad, I would change the pump regardless, it is likely original.

 

[Triple white fox]

Im thinking it might of had a bad fuel filter or bad fuel in tbe line. I didnt mentjon but i pulled a napa filter out. Well I come to find out the gauge I had didn't work that well and I should of figured that out when I hooked it up and the needle didn't move . Anyway got one that worked and got a reading of 39. I've been driving all day and put new gas in there and it seems whatever was clogging is out.
Thanks for the help.

 

[General karthief]

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