Two more codes, Lean in Bank 1 & 2

Shaun03GT · April 9th, 2010, 10:52 PM

Sorry to start another thread for my stupid problems. But I can always count on you guys for help.

My car threw 2 more codes, Lean in bank 1, and Lean in Bank 2. Is this a cause of the Fuel Rail Pressure Sensor? I just want to make sure. Im going to order the Fuel Rail Sensor soon. So I just want to make sure. Thanks guys.

ajm · April 9th, 2010, 11:57 PM

datalog your short and long term fuel trims and see what they read. Should be +/- 5 at max. havent paid much attention to your fuel pressure issue, whats up with that?

RyanGT · April 10th, 2010, 01:06 PM

It could be the cause. But +1 on datalog. Get a datalog with the pressure drop, and the short fuel trims. It might be your frps, since i saw in a previous thread you were getting spikes of up to 65 or some shit. If it settles down fast im sure it is the tune, but if it stays at 65 for a long time you have a problem.

Also the KB fuel pressure disk, prevents high pressure spikes from rupturing the frps. Might want to look into getting one (lethal sells them), to prevent it from happening to a brand new one.

B0B · April 10th, 2010, 02:06 PM

do NOT boost the car if its throwing lean codes. my stock engine blew 15 minutes after having a lean code come on.. it was my fault for not getting the car tuned after a new mass air sensor and headers, it was running very lean.

B0B · April 10th, 2010, 02:06 PM

oh and i didn't even get on it when it let go, it detonated while driving at 2500 rpm

GTRACER88 · April 10th, 2010, 02:48 PM

I bet it's your o2 sensor.

Shaun03GT · April 10th, 2010, 07:23 PM

Originally Posted by ajm

datalog your short and long term fuel trims and see what they read. Should be +/- 5 at max. havent paid much attention to your fuel pressure issue, whats up with that?

Good idea man. Ill look into that. Ill see if I can datalog the fuel trims with my dads scan tool.

The fuel pressure issue is wierd. It threw a code saying Fuel Rail Pressure Sensor circuit malfunction. And the idle has been shitty and wants to stall almost every time I come to a stop. Then a few days a go, it stalled it took me like 10 minutes to start back up. And thats when it threw the 2 lean codes. But I cleared them, and hasnt thrown them again.

Originally Posted by RyanGT

It could be the cause. But +1 on datalog. Get a datalog with the pressure drop, and the short fuel trims. It might be your frps, since i saw in a previous thread you were getting spikes of up to 65 or some shit. If it settles down fast im sure it is the tune, but if it stays at 65 for a long time you have a problem.

Also the KB fuel pressure disk, prevents high pressure spikes from rupturing the frps. Might want to look into getting one (lethal sells them), to prevent it from happening to a brand new one.

Cool thanks for the headsup, Ill look into that for sure.

Originally Posted by B0B

do NOT boost the car if its throwing lean codes. my stock engine blew 15 minutes after having a lean code come on.. it was my fault for not getting the car tuned after a new mass air sensor and headers, it was running very lean.

oh and i didn't even get on it when it let go, it detonated while driving at 2500 rpm

Jesus christ, that hasnt happened yet obviously lol. It smells rich than anything else, maybe just that once? Idk

Originally Posted by GTRACER88

I bet it's your o2 sensor.

Would that cause fuel rail pressure sensor malfunction? I know it could cause shitty idles, but all the time?

40thAnnivGT · April 11th, 2010, 12:06 AM

You're having these issues after you put in your fuel pressure gauge right? Cause since our setups are almost identical, I'm kinda scared to do mine now lol!

Telibyte · April 11th, 2010, 12:17 AM

Can't you log the fuel rail pressure and the sftfs?
But +1 on logging the stfts
Teli

Shaun03GT · April 11th, 2010, 12:32 AM

Originally Posted by 40thAnnivGT

You're having these issues after you put in your fuel pressure gauge right? Cause since our setups are almost identical, I'm kinda scared to do mine now lol!

Nah dude, never did a fuel pressure guage. Idk when I did the first start of my car, it ran rich as a mother f*cker cus the bypass valves werent hooked up, so it thought they were open and it was pouring fuel in there.

So Im thinkin maybe from it running so rich then the fuel spiked into the fuel rail pressure sensor or something. Unless it just went bad idk.

RyanGT · April 11th, 2010, 01:59 AM

So you don't have a wideband?

mell0 · April 11th, 2010, 02:33 AM

no he does, it just isn't installed yet.

RyanGT · April 11th, 2010, 10:28 AM

Well you know what would help figure out if you are lean or not? A wideband

And it could be frps, or tune if your pressure is wacky.

Shaun03GT · April 11th, 2010, 02:45 PM

Thanks andy, yea my wideband just isnt hookedup right now. I had to make a double car payment so Im low as hell on cash. Ill have the Wideband hooked up by the end of the month

BlackedOut04GT · April 11th, 2010, 02:48 PM

Check your air intake. Mean throw the bank 1 + 2 lean codes because my intake came apart after the MAF. Put it back together, cleared the codes and it was fine.

mutlyi4 · April 11th, 2010, 03:05 PM

i have a 97 threw the same code it ended up being my mass air flow sensor was bad

RyanGT · April 11th, 2010, 04:30 PM

Originally Posted by Shaun03GT

Thanks andy, yea my wideband just isnt hookedup right now. I had to make a double car payment so Im low as hell on cash. Ill have the Wideband hooked up by the end of the month

If you already have it why would it cost anything? Well i guess the bung welded in, but that is like 20 bucks if that.

Shaun03GT · April 11th, 2010, 07:07 PM

yea the bung needs to be welded in. So I gotta wait.

BlackedOut04GT - Yea nothings apart there, thanks though.

mutlyi4 - Thanks, my MAF is fine, because its mainly at idle, it through the code for the fuel rail sensor. My MAF is like brand new and less than 1k miles on it. Plus I cleaned it after like 3-400 miles because I oiled up the filter so I would think some oil would it.

April 9th, 2010, 10:52 PM	#1
Shaun03GT I Post Entirely Way Too Much 2003 Mustang GT 1/8 - 7.92 @ 91.13mph 1/4 - 12.21 @ 115.84mph Join Date: Sep 2009 Location: Weymouth, MA Posts: 13,441 iTrader: 12 reviews	Two more codes, Lean in Bank 1 & 2 Sorry to start another thread for my stupid problems. But I can always count on you guys for help. My car threw 2 more codes, Lean in bank 1, and Lean in Bank 2. Is this a cause of the Fuel Rail Pressure Sensor? I just want to make sure. Im going to order the Fuel Rail Sensor soon. So I just want to make sure. Thanks guys. __________________ Vortech V1 Intercooled @ 11psi 394rwhp/392rwtq @ 9.5psi 415rwhp/400rwtq @ 11psi on Methanol Tuned By: Pete @ Performance Dyno Affordable Supercharger Build Guide Supercharger Info for Noobs

April 10th, 2010, 01:06 PM	#3
RyanGT MM Fanatic 2000 GT Join Date: Dec 2006 Location: Lynnwood, Washington Posts: 4,258 iTrader: 4 reviews	It could be the cause. But +1 on datalog. Get a datalog with the pressure drop, and the short fuel trims. It might be your frps, since i saw in a previous thread you were getting spikes of up to 65 or some shit. If it settles down fast im sure it is the tune, but if it stays at 65 for a long time you have a problem. Also the KB fuel pressure disk, prevents high pressure spikes from rupturing the frps. Might want to look into getting one (lethal sells them), to prevent it from happening to a brand new one. __________________ 2000 Black convertible GT: KB 15psi, and other goodies... 1971 Datsun 240 z: Header and rebuilt motor. (The DD)

April 10th, 2010, 02:06 PM	#4
B0B Boost gets you laid 2001 Mustang GT 12.93@113.7 (on the 18's) Join Date: Dec 2006 Location: Milton, WA Posts: 2,609 iTrader: 2 reviews	do NOT boost the car if its throwing lean codes. my stock engine blew 15 minutes after having a lean code come on.. it was my fault for not getting the car tuned after a new mass air sensor and headers, it was running very lean. __________________ '01 GT. Just a couple Bolt-ons. 0rwhp 0rwtq. Epic Turbo build in progress 2003 Rubicon (wheelin rig) 2008 Silverado 4x4 (towin rig/road queen) 2009 KTM 450 XC-W (Brap Brap!)

April 10th, 2010, 02:06 PM	#5
B0B Boost gets you laid 2001 Mustang GT 12.93@113.7 (on the 18's) Join Date: Dec 2006 Location: Milton, WA Posts: 2,609 iTrader: 2 reviews	oh and i didn't even get on it when it let go, it detonated while driving at 2500 rpm __________________ '01 GT. Just a couple Bolt-ons. 0rwhp 0rwtq. Epic Turbo build in progress 2003 Rubicon (wheelin rig) 2008 Silverado 4x4 (towin rig/road queen) 2009 KTM 450 XC-W (Brap Brap!)

April 10th, 2010, 02:48 PM	#6
GTRACER88 I'm cool.. Join Date: May 2008 Location: Houston, TX Posts: 2,165 iTrader: 1 reviews	I bet it's your o2 sensor. __________________ Super Slow 2012 Grabber blue 5.0...

April 9th, 2010, 11:57 PM	#2
ajm Banned Join Date: May 2008 Posts: 7,966 iTrader: 4 reviews	datalog your short and long term fuel trims and see what they read. Should be +/- 5 at max. havent paid much attention to your fuel pressure issue, whats up with that?

April 11th, 2010, 12:06 AM	#8
40thAnnivGT Hardcore Enthusiast 2004 Mustang GT 12.35 @ 116 Join Date: Nov 2009 Location: Parma, Ohio Posts: 1,126 iTrader: 0 reviews	You're having these issues after you put in your fuel pressure gauge right? Cause since our setups are almost identical, I'm kinda scared to do mine now lol!

April 11th, 2010, 12:17 AM	#9
Telibyte Newbie Join Date: Apr 2010 Posts: 24 iTrader: 0 reviews	Can't you log the fuel rail pressure and the sftfs? But +1 on logging the stfts Teli

April 11th, 2010, 01:59 AM	#11
RyanGT MM Fanatic 2000 GT Join Date: Dec 2006 Location: Lynnwood, Washington Posts: 4,258 iTrader: 4 reviews	So you don't have a wideband? __________________ 2000 Black convertible GT: KB 15psi, and other goodies... 1971 Datsun 240 z: Header and rebuilt motor. (The DD)

April 11th, 2010, 02:33 AM	#12
mell0 Hardcore Enthusiast 2002 Procharged GT, STR 12.503 @ 113.08 Join Date: Feb 2010 Location: Boxford, MA Posts: 1,873 iTrader: 0 reviews	no he does, it just isn't installed yet. __________________ 2002 Procharged GT 12.503 @ 113.08 351rwhp 353rwtq Car Videos: http://www.youtube.com/user/mell00ut5?feature=mhee

April 11th, 2010, 10:28 AM	#13
RyanGT MM Fanatic 2000 GT Join Date: Dec 2006 Location: Lynnwood, Washington Posts: 4,258 iTrader: 4 reviews	Well you know what would help figure out if you are lean or not? A wideband And it could be frps, or tune if your pressure is wacky. __________________ 2000 Black convertible GT: KB 15psi, and other goodies... 1971 Datsun 240 z: Header and rebuilt motor. (The DD)

April 11th, 2010, 02:45 PM	#14
Shaun03GT I Post Entirely Way Too Much 2003 Mustang GT 1/8 - 7.92 @ 91.13mph 1/4 - 12.21 @ 115.84mph Join Date: Sep 2009 Location: Weymouth, MA Posts: 13,441 iTrader: 12 reviews	Thanks andy, yea my wideband just isnt hookedup right now. I had to make a double car payment so Im low as hell on cash. Ill have the Wideband hooked up by the end of the month __________________ Vortech V1 Intercooled @ 11psi 394rwhp/392rwtq @ 9.5psi 415rwhp/400rwtq @ 11psi on Methanol Tuned By: Pete @ Performance Dyno Affordable Supercharger Build Guide Supercharger Info for Noobs

April 11th, 2010, 02:48 PM	#15
BlackedOut04GT Hardcore Enthusiast 2004 Mustang GT 14.21@97.93 2.107 60' (Best pass. So far.) Join Date: Sep 2008 Location: Maynard, MA. Posts: 1,855 iTrader: 0 reviews	Check your air intake. Mean throw the bank 1 + 2 lean codes because my intake came apart after the MAF. Put it back together, cleared the codes and it was fine. __________________ Black Stang Crew #007 Car Built By Me and CraigsList.com Mods: MGW, Bassani Catted X, Flowmaster's, Accufab 70MM TB, Stack Racing Plenum + spacer, JLT CAI, Diablo Tune, Slotted rotors + ceramic pads. More to come! I hope.

April 11th, 2010, 03:05 PM	#16
mutlyi4 Regular 95 mustang gt ??? Join Date: Feb 2010 Location: florida Posts: 122 iTrader: 0 reviews	i have a 97 threw the same code it ended up being my mass air flow sensor was bad

April 11th, 2010, 07:07 PM	#18
Shaun03GT I Post Entirely Way Too Much 2003 Mustang GT 1/8 - 7.92 @ 91.13mph 1/4 - 12.21 @ 115.84mph Join Date: Sep 2009 Location: Weymouth, MA Posts: 13,441 iTrader: 12 reviews	yea the bung needs to be welded in. So I gotta wait. BlackedOut04GT - Yea nothings apart there, thanks though. mutlyi4 - Thanks, my MAF is fine, because its mainly at idle, it through the code for the fuel rail sensor. My MAF is like brand new and less than 1k miles on it. Plus I cleaned it after like 3-400 miles because I oiled up the filter so I would think some oil would it. __________________ Vortech V1 Intercooled @ 11psi 394rwhp/392rwtq @ 9.5psi 415rwhp/400rwtq @ 11psi on Methanol Tuned By: Pete @ Performance Dyno Affordable Supercharger Build Guide Supercharger Info for Noobs

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