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-   4.0 SOHC / 4.0 OHV Tech (http://www.fordrangerforum.com/4-0-sohc-4-0-ohv-tech/)
-   -   4.0 running rough and misfiring. Help please! (http://www.fordrangerforum.com/4-0-sohc-4-0-ohv-tech/28102-4-0-running-rough-misfiring-help-please.html)

tloftis 03-03-2011 07:10 PM

4.0 running rough and misfiring. Help please!
 
My truck is running rough. the codes it is throwing is

PO301 cyl 1 misfire

PO304 cyl 4 misfire

PO153 02 sensor Bank 2 Censor 1

PO102 MAF or VAF A circuit low input

I am not sure what to replace. It runs like it has water in the fuel, which it does not. but, that is what it acts like.

Tork 03-09-2011 04:55 PM

Re: 4.0 running rough and misfiring. Help please!
 
I was having similar issues on a 91 ohv 4.0
The MAF ended up bein' dirty. Cleaned that and it fixed it. Wish you luck and I hope it's a simple fix!


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