CSprain

My 2005 f150 has an intermittent misfire. It is not enough to trip a CEL or even to trip a pending code. I don't know why it won't because it is pretty much constant. I have had it at a shop twice having them hook their computer that graphs the cylinders out. Well now here I am $180 later and still having the misfire. Is there anyway for me to tell which cylinder is misfiring without taking it back? Any scanners that aren't thousands? I have an actron CP9180 but that won't tell me anything unless it trips a code. Thanks for any help.

Prof

Yes! If have an android phone, you can get the ELM OBD2 dongle off Amazon for $25 bucks, and the Torque App for $5 bucks, and it will give you all the info you need, as well as read codes when they fire, and clear them...works well.

techrep

iTrader: (1)

why not do a tune up...plugs and COP's and be done with it ...

08silverbullet

Is it a bad idea to run iridium plus in these trucks? Also what's the advantages of running a cooler plug?

CSprain

I didn't think it would cost this much for the shop to scan it. It has fresh plugs. In retrospect I wish I would've just bought a set of coils. But not much I can do now.

CSprain

@ Prof,
Are you sure it can graph cylinders that are giving no codes?
Also is there an apple version? Or else I can download it on my girlfriends phone if there is no apple option.

CSprain

I think the amazon product can only do as much as my Actron CP9180. I cannot tell what cylinder is misfiring until it sets a code.

screamineagle

Change your COP's and be done with it. Taking it to most shops is a waste of time and money because the majority of them are lost and have no clue what to do unless the scanner gives them a direct fault on a direct cylinder. Mechanics are not what they used to be. A misfire on a modular that's not throwing a "retard" code is most always a faulty COP.

Prof

Actually, in "test" mode, it runs continuous tests, and will give you on the fly information about misfires while going down the road, most of which happen prior to engine lights coming on...

The Torque app I think works with apple or android, as long as it has Bluetooth? The dongle I use is just for android currently, but there's some dongles that will work with apple, they are just pricier...

CSprain

Any recommendations on coil packs?