P0172, P0175

[mab6680]

97 stock Z28, driving home today my car started idling REAL rough. CEL came on shortly after, when i got home i ran the codes and P0172 and P0175 both banks running rich. the car will not start unless the pedal is floored and even then it takes a few seconds longer to start plus you can smell raw gas. fpr not leaking fuel, LT fuel trims are staying at 0 and the ST trims are going as high as -37 on both banks, also the temp sensor is reading fine. evap, egr, and rear o2 have all been removed and tuned out for a few years now. anyone have any clues as to where to look next?

[FlyingDutchman]

I would start by testing the fuel pressure and O2 readings.

I had a similar problem running extremely rich, turned out front O2s were toasted and pcm saw very lean exhaust

[chknhwk01]

I would replace both 02,

[sweetbmxrider]

shazammmm

[ThoR294]

Could be bad o2s. Try unplugging a front one see if it helps. Does the car run OK on a cold start?

[6spdg37s]

pull a plug and read it ? this is an old post tho hope you figured it out by now

[sweetbmxrider]

Sounds like the o2's are saying pull fuel? I would look elsewhere.

[ThoR294]

god damnit chickenhawk bumping 2 month old posts lol

[LTb1ow]

god damnit chickenhawk bumping 2 month old posts lol

bukk bukk warriorzzz

[chknhwk01]

you mite have too move your 02 sensors, back a little,

[sweetbmxrider]

you mite have too move your 02 sensors, back a little,

Like unscrew them back a little? About how far?

[chknhwk01]

move them back about 7to10 ins... try that that mite work??

[sweetbmxrider]

buk buk playazzzz