On the 01 3.0 I just bought it has 4 codes. P0174, 304,305, 306...any ideas?

 

Autozone can't tell you what they are? or google? Heck, if I had 20 rangers, I'd have my own reader and code book. Sorry I can't help, just felt like posting something useless and un-helpful.

 

don't count on this, but i feel like 305 or 306 is EGR valve... had that on the Mountaineer
If you call ford they will tell you...

 

304,305,306 are missfire codes. i forgot what p0174. if truck is runnin bad. i'd but some new plugs n wires and a new coil on n call her good

 

The P0174 is a vacumn or pvc code
P0304 is a misfire on cyl 4
P0305 is a misfire on cyl 5
P0306 is a misfire on cyl 6

I know what the codes are But I was hpoing for an opinions on the reason for them. I originally thought a burnt valve but on 3 adjacent cylinders it seems unlikely. The truck also has a new coil pack, wires, plugs and pcv valve. The prvious owner cleaned out the cats thinking it was bad cats but no effect.

 

check the pvc hoses

 

Update!

Well sometimes you just get lucky....lol

I pulled the upper intake to look for problems and I found 1 fuel injector without the plug even in place and another that had the rubber seal blocking the connection. I bolted the intake back together and took it for a spin and guess what ....it runs good...no miss

Its not missing but if you rev it past 3000 it acts like something is cutting out and causeing a miss but when you drive it its smooth way past 3000 rpms. Its not idleing perfectly smooth but I was thinking maybe the empty convertors could be causing it. I'll swap out the convertors and see what happens...

 

yeah u get lucky and i get screwed lol.

 

lol sorry man!

 

it has a rev limiter in park and neutral probably limiting it to 3,000 rpm in park and neutral

 

Cool, I didn't know that. I learn something new everyday...lol