SES Keeps Coming On Please Read Bank 2 Lean

brett03gt · 10-31-2005, 09:45 AM

Hello all, well I've tried just about everthying oher than a dyno tune here's my mods as listed

acufab plenum 75mm throttle body
pro m 85mm maf
densecharger cold air kit
bbk equal legnth tuned headers
bbk off road x pipe switching to prochamber next week hate x pipe , for sale! have mil's too
flowmaster at series catback
3:90 gears
oil seperator
canton aluminum pan with windage tray
energy suspension motor mounts
steeda underdrives-not installed yet
predator with minor tuning, 180 degree thermostats

My problem is this, the car idles great, runs great, but every 4 days or so the ses light comes on, 0174 code bank 2 is r unning lean. I've tried adjusting the fuel on the predator but can't seem to get it to even out. Any ideas, cha nging the fuel filter tomorrow but running out of ideas, do I just need a dyno tune done with fuel monitoring as well as timing adjusted? This is ticking me off!

Please help
Brett

Did anyone else have this problem?

*Randy Stinchcomb* · 10-31-2005, 09:57 AM

could just be a bad O2 sensor, are they the oringials, how many miles? might try switching bank 2 to bank 1 and see if the code changes.

brett03gt · 10-31-2005, 11:17 AM

They are originals, I got about 14,500 on the odometer now. Shouldn't be a problem but oviosuly somehting is wrong. Any help is greatly apprecaited
Brett

ThePunisher · 10-31-2005, 11:53 AM

I would guess and say you probably need a real tune. The predator probably can't conpensate for the mods you have. Between having no cats and headers, diff. MAF and intake mods, it doesnt really surprise me that your getting a little lean. Id run it on the dyno and see where A/F ratio is. Only way to know for sure.

brett03gt · 10-31-2005, 04:09 PM

What I figured, thanks for the advice, I'm hopinig on not grenading my car....I will have to definately get it in, now my question is this, with tehse tuners do you tune the car different in winter andd summer to compensate for the coldere air? just curious, would make sense if it's tuned otpimally now, it would be concievable that the car would run lean in 90 pllus degree heat no? No boom!

ThePunisher · 10-31-2005, 04:26 PM

Quote:

Originally Posted by brett03gt

What I figured, thanks for the advice, I'm hopinig on not grenading my car....I will have to definately get it in, now my question is this, with tehse tuners do you tune the car different in winter andd summer to compensate for the coldere air? just curious, would make sense if it's tuned otpimally now, it would be concievable that the car would run lean in 90 pllus degree heat no? No boom!

Can't say Ive heard of that being a issue before. I know on the top fuel, prostock, things of that sort, they tune for just that sort of thing but I don't think its much of a issue on a regular street car. Unless your running really lean, you should be in clear till you get a tune.

I was at a dyno day a couple weeks ago and a guy with a SHO ran his car and they aborted the run because he was so lean. He even went off the scale. I think he went past 9:1 or sumthin nuts on the second run when they cut it off early.

WaterDR · 10-31-2005, 05:38 PM

$10 says you have an exhaust leak. Check, closely for leaks on that side.

spike_africa · 11-01-2005, 11:20 AM

I would highly bet on a leak somewhere weither its from the tb plenum or heades etc.. you got one befor the front sensor.

10-31-2005, 09:45 AM	#1 (permalink)
brett03gt Junior Member Join Date: Aug 2005 Posts: 29	SES Keeps Coming On Please Read Bank 2 Lean Hello all, well I've tried just about everthying oher than a dyno tune here's my mods as listed acufab plenum 75mm throttle body pro m 85mm maf densecharger cold air kit bbk equal legnth tuned headers bbk off road x pipe switching to prochamber next week hate x pipe , for sale! have mil's too flowmaster at series catback 3:90 gears oil seperator canton aluminum pan with windage tray energy suspension motor mounts steeda underdrives-not installed yet predator with minor tuning, 180 degree thermostats My problem is this, the car idles great, runs great, but every 4 days or so the ses light comes on, 0174 code bank 2 is r unning lean. I've tried adjusting the fuel on the predator but can't seem to get it to even out. Any ideas, cha nging the fuel filter tomorrow but running out of ideas, do I just need a dyno tune done with fuel monitoring as well as timing adjusted? This is ticking me off! Please help Brett Did anyone else have this problem?

10-31-2005, 09:57 AM	#2 (permalink)
Randy Stinchcomb Super Moderator Join Date: Aug 2005 Location: Randallstown, Md Posts: 2,522	could just be a bad O2 sensor, are they the oringials, how many miles? might try switching bank 2 to bank 1 and see if the code changes. __________________ Randy Stinchcomb contact info: Liberty Ford of Baltimore 410-655-2000 parts ext 5618 like to fish visit us at www.sportfisherman.com need fishing tackle www.binnacletackle.com

10-31-2005, 05:38 PM	#7 (permalink)
WaterDR Administrator Join Date: Sep 2004 Posts: 6,363	$10 says you have an exhaust leak. Check, closely for leaks on that side. __________________ Black 2000 GT Vert: Novi-2000 with Intercooler (375rwhp @ 9 psi); Tune by Kauffmans; Roush 380R Body kit; Steeda Subframes; Steeda Strut Tower Support; Deep Dish Bullets; FRPP 4:10's; SCT 4 Position Chip with four custom tunes; Steeda CAI; C&L Pleum; BBK 75 TB; SLP Loudmouth; SLP Catted X-Pipe; Bullitt Suspension; UPR Conrol Arms; Focus Fuel Pump My Car My Email

11-01-2005, 11:20 AM	#8 (permalink)
spike_africa Administrator Join Date: Sep 2004 Location: Orlando,Florida Posts: 6,971	I would highly bet on a leak somewhere weither its from the tb plenum or heades etc.. you got one befor the front sensor. __________________ Dustin 2002 GT Mustang 5-Speed Drag Radials,Sprayed,Powershifted WOOO HOOOO!

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10-31-2005, 11:17 AM	#3 (permalink)
brett03gt Junior Member Join Date: Aug 2005 Posts: 29	They are originals, I got about 14,500 on the odometer now. Shouldn't be a problem but oviosuly somehting is wrong. Any help is greatly apprecaited Brett

10-31-2005, 11:53 AM	#4 (permalink)
ThePunisher Senior Member Join Date: Dec 2004 Posts: 624	I would guess and say you probably need a real tune. The predator probably can't conpensate for the mods you have. Between having no cats and headers, diff. MAF and intake mods, it doesnt really surprise me that your getting a little lean. Id run it on the dyno and see where A/F ratio is. Only way to know for sure.

10-31-2005, 04:09 PM	#5 (permalink)
brett03gt Junior Member Join Date: Aug 2005 Posts: 29	What I figured, thanks for the advice, I'm hopinig on not grenading my car....I will have to definately get it in, now my question is this, with tehse tuners do you tune the car different in winter andd summer to compensate for the coldere air? just curious, would make sense if it's tuned otpimally now, it would be concievable that the car would run lean in 90 pllus degree heat no? No boom!

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