P0174 on a supercharged motor

[Ronin]

Well I can't say I'm surprised, given my luck with cars in the past, the CEL came on today. I know I need to update my sig, but it's a 96 GT with Procharger. Code is P0174 which generally seems to be running lean or O2 sensor. Any thoughts on where to start given the blower? It has 92,600 miles on it.

 

[duff daddy]

Do you happen to have a wide band?

 

[mikey94gt]

Thats where I would start. that, and a code reader.. you can get a decent code reader for about $30 anymore....

 

[duff daddy]

If its going lean you need to see if its a cause or effect (its lean because the fuel pump,lack of supply caused it to be lean) or an effect as the up stream 02 is getting lazy or failing.

 

[mikey94gt]

I wonder if your fuel filter is clogged....

 

[Ronin]

Thanks for the suggestions guys. I'll start knocking them out with my mechanic friend, probably next week. Not going to get driven much anyway this week.

 

[Lee12609]

if you're not getting any bucking or jerking (lean misfire) i'd say the primary o2 for whatever bank that code corresponds to is going bad/is bad.

to be lean enough to get that code you would notice a difference in driveability.

what all is done to the car bone stock with procharger nothing else?

 

[Ronin]

aside from suspension mods, yeah, that's all I know of. But that's the difficulty of getting a pre-modded car...the previous owner had it for about 3 years, and it was an owner before him that did all the work (and the previous owner, the one I bought it from...not the brightest bulb in the box).

 

[mikey94gt]

haha, but those cars are the most fun.............. lol


Good luck, and the 02 sugggestion is a good one. I would replace the fuel filter first tho, they are much cheaper. oh, and check your spark plugs..... easy stuff first man!