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Engine misfiring or running rough


Tredog500r

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Nov 23, 2015
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Location
I-dee-how
Vehicle Year
1993
Make / Model
Ford
Engine Size
4.0 ohc
Transmission
Manual
My credo
That's what she said
So I drove to my buddy's the other day and the old girl ran great as usual. When I got in her to leave, the old girl just ran roughl like she was misfiring. I limped her on home and after new plugs, testing the year old wires and new fuel filter, I am running out of options. I can't really afford to take her into a mechanic. She's a '93 ranger xlt supercab 4x4. I also did put in a new PCV valve. Ran the KOEO and KOEO codes all coming back 111 which is normal. I also do NOT have an EGR on this truck. It runs smooth at idle then from about 1000 to 1500 runs rough. Past that she runs ok. It's the worst when under load. Any help would be GREATLY appreciated!:beer:
 


Spott

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TRS Banner 2012-2015
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Nov 28, 2010
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925
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Location
SE Idaho
Vehicle Year
2000
Make / Model
Ford
Engine Type
4.0 V6
Transmission
Automatic
2WD / 4WD
4WD
Which engine?

Are there any exhaust leaks between the engine and the O2 sensor (at the cat)?
 

Tredog500r

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I-dee-how
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1993
Make / Model
Ford
Engine Size
4.0 ohc
Transmission
Manual
My credo
That's what she said
She's got the 4.0 in her Spott. I have not checked yet. Thanks. I did some off-roading a couple weeks ago. Coulda broke something loose.
 

Tredog500r

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I-dee-how
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Ford
Engine Size
4.0 ohc
Transmission
Manual
My credo
That's what she said
No exhaust leaks as far as I can tell.
 

Tredog500r

New Member
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I-dee-how
Vehicle Year
1993
Make / Model
Ford
Engine Size
4.0 ohc
Transmission
Manual
My credo
That's what she said
Update

Took the old girl into a local mechanic to diagnose and I have a dead injector on #2 cylinder. I am ordering a full set. Gonna undertake the job myself as I can't afford the shop labor.:popcorn::beer:
 

black_demon69

Well-Known Member
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Location
AZ
Vehicle Year
1994
Make / Model
Ford
Engine Type
4.0 V6
Engine Size
4.0l
Transmission
Manual
2WD / 4WD
4WD
Took the old girl into a local mechanic to diagnose and I have a dead injector on #2 cylinder. I am ordering a full set. Gonna undertake the job myself as I can't afford the shop labor.:popcorn::beer:

injector was what i was thinking before i read this post. might also do intake gaskets as well because you are 1/2 way there.
 

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