Once in a while under a light load, I will get a misfire. then it straightens out and runs fine. No codes and the shop could not get it to act up. Suggestions?

 

borrow a scanner that reads live data, take a buddy and go for a drive, replicate the trigger condition....

 

Live data - that's a good idea. Suggest a brand/model?

 

Can I get OBDII software anyplace as a free download, then buy a cable to hook up to my laptop??

Any links to software and a cable are appreciated!

 

do a tuneup including a fuel filter. there is a 95% chance it that takes care of it. Fuel filters are the most neglected item on these vehicles.

 

I have several, this is one I use on my LT OBD2 All-In-One PC Scan Tool - Serial Interface, I often utilize OBDScan with my palm..

 

I called the All-in-One guys and they said misfire is not something these devices can monitor

 

Miss-fires are a result of items they can monitor, ei, STFT... MAF... TPS.. O2v ect

The TOOL is only as good as those that use them....

and answers you get are a result of the question put forth....

However Powersmoked had a good point, change the filter and plugs, in addition run some injector cleaner through the fuel....


edit: for your edification,
http://www.wrenchead.ca/HTML%20Prese...der/sld028.htm and
http://findarticles.com/p/articles/m...5/ai_n8891565/ and
http://www.aa1car.com/library/misfire.htm

 

plugs look good - really good. Running some Lucas injector cleaner now.

Where is the fuel filter on an '03 V8?

 

they are inline filters on my ranger it is in the drivers side frame rail. You will need a $10 tool. THE FILTERS NEVER GET CHANGED ENOUGH

 

Mine is the Mountaineer, pretty sure not the same as the Ranger

 

Your fuel filter is on the frame

 

lucas came out with a fuel system cleaner its like 10 bucks but it worked for me.

 

anyone have a DIY for the fuel filter?

 

God helps those that help themselves. you are putting on a clinic of how to drive people away from the forum.. have you searched anything before you keep asking these questions? Have you looked under your truck for a fuel filter? Your first post did not include any info!your profile says Navigator? I have to go watch some paint dry