Today's Posts Mark Forums Read Calendar
Go Back   NJFBOA - Home of New Jersey's Camaros and Firebirds > Tech Forums > Engine / Power / Tuning

Notices


Reply
 
Thread Tools
Old 12-20-2015, 05:14 PM   #1
mab6680
 
Join Date: Apr 2012
Location: brick nj
Posts: 12
iTrader: (0)
P0172, P0175

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?
mab6680 is offline   Reply With Quote
Old 12-20-2015, 05:47 PM   #2
FlyingDutchman
 
FlyingDutchman's Avatar
 
Join Date: Dec 2008
Location: NNJ
Posts: 1,489
iTrader: (1)
Social Networks:

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
__________________
1997 Camaro Z28 - 355 LT1, T56, CC503, LTs, ORY, Bald Eagle-back exhaust, !emissions, Lingenfelter CAI, EWP, !CAGS, BMR LCAs, UMI PHB, Koni Str.t/Koni SA, C5 Z06 front / LS1 F-body rear brake swap, factory hurst with short stick

2014 2LT Cruze 2.0 Turbo Diesel
FlyingDutchman is offline   Reply With Quote
Old 02-09-2016, 06:14 PM   #3
chknhwk01
What?
 
chknhwk01's Avatar
 
Join Date: Nov 2009
Posts: 411
iTrader: (0)
Lightbulb badd 02 sensors

I would replace both 02,
__________________
YELLOW BULLET,WHER THE ''WEAK ARE EATEN''
STOP THE ''BITCH IN,BAAAAD
BOOTS TO ASSSES, IF U CAN SMELLLLLLLLLLLLL,WHAT THUNDER IS-SPAYYYY-IN.... RIP, MIKE ROMEO..TUNE,BY DALE CHERRY,INJECTION-CONNECTION..""SHAZAMMMM""
THE FAMOUS ONE215-675-8515 ,AND STEVE SPOHN,and j&g-transmisstions,willow grove,pa,215-659-3022,, R.I.P.JOE PRINCE..
chknhwk01 is offline   Reply With Quote
Old 02-09-2016, 06:28 PM   #4
sweetbmxrider
Meet Coordinator
 
sweetbmxrider's Avatar
 
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 18,853
iTrader: (12)
shazammmm
__________________
#1531
Quote:
Originally Posted by karlaa View Post
hi there, i just joined this forum and i must admit that i like it
Quote:
Originally Posted by BigAls87Z28 View Post
I know it's good to eat salads, but this is ridiculous.
sweetbmxrider is offline   Reply With Quote
Old 02-09-2016, 06:29 PM   #5
ThoR294
^^^Lover of bad cars^^^ Meet Coordinator
 
Join Date: Aug 2007
Location: Ringoes
Posts: 1,800
iTrader: (0)
Could be bad o2s. Try unplugging a front one see if it helps. Does the car run OK on a cold start?
__________________
1996 Trans Am WS6 M6 - 13.679 at 102.77MPH in 1/4. (11/07)
LPP LT Headers & ORY, PCM4LESS Tune, GMMG Catback, TPIS Air Foil, SPEC Clutch, STB, BMR SFCs, Boxed Stock LCAs, 4.11s, Koni 4/4s, Strano Springs & Sway Bars, UMI Adj T/A and Reloc Xmember, Adj PHB, MGW Shifter, LS1 Front Brakes, BLS HIDs, Full Sound System!
1986 Honda VFR750 - 89.3HP to the wheel
ThoR294 is online now   Reply With Quote
Old 02-09-2016, 07:40 PM   #6
6spdg37s
 
Join Date: Feb 2016
Posts: 626
iTrader: (0)
pull a plug and read it ? this is an old post tho hope you figured it out by now
6spdg37s is offline   Reply With Quote
Old 02-09-2016, 08:21 PM   #7
sweetbmxrider
Meet Coordinator
 
sweetbmxrider's Avatar
 
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 18,853
iTrader: (12)
Sounds like the o2's are saying pull fuel? I would look elsewhere.
__________________
#1531
Quote:
Originally Posted by karlaa View Post
hi there, i just joined this forum and i must admit that i like it
Quote:
Originally Posted by BigAls87Z28 View Post
I know it's good to eat salads, but this is ridiculous.
sweetbmxrider is offline   Reply With Quote
Old 02-09-2016, 09:01 PM   #8
ThoR294
^^^Lover of bad cars^^^ Meet Coordinator
 
Join Date: Aug 2007
Location: Ringoes
Posts: 1,800
iTrader: (0)
god damnit chickenhawk bumping 2 month old posts lol
__________________
1996 Trans Am WS6 M6 - 13.679 at 102.77MPH in 1/4. (11/07)
LPP LT Headers & ORY, PCM4LESS Tune, GMMG Catback, TPIS Air Foil, SPEC Clutch, STB, BMR SFCs, Boxed Stock LCAs, 4.11s, Koni 4/4s, Strano Springs & Sway Bars, UMI Adj T/A and Reloc Xmember, Adj PHB, MGW Shifter, LS1 Front Brakes, BLS HIDs, Full Sound System!
1986 Honda VFR750 - 89.3HP to the wheel
ThoR294 is online now   Reply With Quote
Old 02-10-2016, 07:30 AM   #9
LTb1ow
Mongo the Meet Coordinator
 
LTb1ow's Avatar
 
Join Date: May 2008
Posts: 16,225
iTrader: (8)
Quote:
Originally Posted by ThoR294 View Post
god damnit chickenhawk bumping 2 month old posts lol
bukk bukk warriorzzz
__________________

LTb1ow is offline   Reply With Quote
Old 02-10-2016, 11:56 AM   #10
chknhwk01
What?
 
chknhwk01's Avatar
 
Join Date: Nov 2009
Posts: 411
iTrader: (0)
Talking 0r this?????

you mite have too move your 02 sensors, back a little,
__________________
YELLOW BULLET,WHER THE ''WEAK ARE EATEN''
STOP THE ''BITCH IN,BAAAAD
BOOTS TO ASSSES, IF U CAN SMELLLLLLLLLLLLL,WHAT THUNDER IS-SPAYYYY-IN.... RIP, MIKE ROMEO..TUNE,BY DALE CHERRY,INJECTION-CONNECTION..""SHAZAMMMM""
THE FAMOUS ONE215-675-8515 ,AND STEVE SPOHN,and j&g-transmisstions,willow grove,pa,215-659-3022,, R.I.P.JOE PRINCE..
chknhwk01 is offline   Reply With Quote
Old 02-10-2016, 11:59 AM   #11
sweetbmxrider
Meet Coordinator
 
sweetbmxrider's Avatar
 
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 18,853
iTrader: (12)
Quote:
Originally Posted by chknhwk01 View Post
you mite have too move your 02 sensors, back a little,
Like unscrew them back a little? About how far?
__________________
#1531
Quote:
Originally Posted by karlaa View Post
hi there, i just joined this forum and i must admit that i like it
Quote:
Originally Posted by BigAls87Z28 View Post
I know it's good to eat salads, but this is ridiculous.
sweetbmxrider is offline   Reply With Quote
Old 02-10-2016, 10:14 PM   #12
chknhwk01
What?
 
chknhwk01's Avatar
 
Join Date: Nov 2009
Posts: 411
iTrader: (0)
Talking 02 sensors

move them back about 7to10 ins... try that that mite work??
__________________
YELLOW BULLET,WHER THE ''WEAK ARE EATEN''
STOP THE ''BITCH IN,BAAAAD
BOOTS TO ASSSES, IF U CAN SMELLLLLLLLLLLLL,WHAT THUNDER IS-SPAYYYY-IN.... RIP, MIKE ROMEO..TUNE,BY DALE CHERRY,INJECTION-CONNECTION..""SHAZAMMMM""
THE FAMOUS ONE215-675-8515 ,AND STEVE SPOHN,and j&g-transmisstions,willow grove,pa,215-659-3022,, R.I.P.JOE PRINCE..
chknhwk01 is offline   Reply With Quote
Old 02-11-2016, 07:22 AM   #13
sweetbmxrider
Meet Coordinator
 
sweetbmxrider's Avatar
 
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 18,853
iTrader: (12)
buk buk playazzzz
__________________
#1531
Quote:
Originally Posted by karlaa View Post
hi there, i just joined this forum and i must admit that i like it
Quote:
Originally Posted by BigAls87Z28 View Post
I know it's good to eat salads, but this is ridiculous.
sweetbmxrider is offline   Reply With Quote
Reply

  NJFBOA - Home of New Jersey's Camaros and Firebirds > Tech Forums > Engine / Power / Tuning

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

» Sponsor List
















All times are GMT -5. The time now is 08:30 PM.


Powered by vBulletin® Version 3.8.9 Beta 3
Copyright ©2000 - 2018, vBulletin Solutions, Inc.