Campieri
My engine has major stumbling at 1/3 throttle and above.. it just started out of the blue one day. I replaced the pre cat O2 sensors which I had laying around anyway and I cleaned the MAF sensor but I still have the problem. In DIS I am getting lean codes on the POST cat O2 sensors.... very strange.
I have a fuel pressor tester on order with a long enough hose to get to the windshield so I can test under load but in the meantime, anybody heard of this code and any possible solution?
Dinan CAI &Throttle body, ESS Tuning TS2, Bimmerbrakes gen3 headers, UUC SSK & DSSR. Achilles oil pump, VAC oil pan baffle
M3 Motor mounts, UUC Trans mounts, Modified clutch style LSD 3.15, TMS front subframe reinforcement, Koni Yellow sports,
H&R sport springs, UUC sway bars, BMW Perf. Rotors, UUC SS brake lines, Hawk HPS pads, CSL replica wheels,
Rotora strut bar, FXR HID conversion, M3 Mirror conversion, BSW stage 1 speakers
Enforcer
Weird indeed. Have you tried simply pulling the post cat sensors and maybe just give them a once over?
Campieri
Not yet. The post cat sensors aren't supposed to have any affect on the mixture from what I understand. I think that the error is a result of another problem. I'm going to test the fuel delivery as soon as my fuel pressure tester arrives.
Last edited by Sockethead; 12-03-2012 at 02:31 PM.
Dinan CAI &Throttle body, ESS Tuning TS2, Bimmerbrakes gen3 headers, UUC SSK & DSSR. Achilles oil pump, VAC oil pan baffle
M3 Motor mounts, UUC Trans mounts, Modified clutch style LSD 3.15, TMS front subframe reinforcement, Koni Yellow sports,
H&R sport springs, UUC sway bars, BMW Perf. Rotors, UUC SS brake lines, Hawk HPS pads, CSL replica wheels,
Rotora strut bar, FXR HID conversion, M3 Mirror conversion, BSW stage 1 speakers
Messaggero
Maybe your fuel filter is clogged?
Campieri
Heh, yea... I'm hoping LOLOriginally Posted by llll1l1ll
Dinan CAI &Throttle body, ESS Tuning TS2, Bimmerbrakes gen3 headers, UUC SSK & DSSR. Achilles oil pump, VAC oil pan baffle
M3 Motor mounts, UUC Trans mounts, Modified clutch style LSD 3.15, TMS front subframe reinforcement, Koni Yellow sports,
H&R sport springs, UUC sway bars, BMW Perf. Rotors, UUC SS brake lines, Hawk HPS pads, CSL replica wheels,
Rotora strut bar, FXR HID conversion, M3 Mirror conversion, BSW stage 1 speakers
Campieri
Well I got my pressure tester, hooked it up and drove around. The fuel pressure is dropping to 15 PSI under load. I'm having Kpro bring me a fuel filter even though she thinks it's the pump.... I'm hoping it's just the filter but you know, women are always right...
BTW the only pressure tester I could find with a long enough hose was an Actron Proffesional CP7838. I got it on Amazon. http://www.amazon.com/gp/product/ima...1&s=automotive
Dinan CAI &Throttle body, ESS Tuning TS2, Bimmerbrakes gen3 headers, UUC SSK & DSSR. Achilles oil pump, VAC oil pan baffle
M3 Motor mounts, UUC Trans mounts, Modified clutch style LSD 3.15, TMS front subframe reinforcement, Koni Yellow sports,
H&R sport springs, UUC sway bars, BMW Perf. Rotors, UUC SS brake lines, Hawk HPS pads, CSL replica wheels,
Rotora strut bar, FXR HID conversion, M3 Mirror conversion, BSW stage 1 speakers
Big Earner
my money's on the pump
Messaggero
Do we have finicky fuel pumps? That would be a bummer. Another item to save my pennies for, haha. The ones in my old Turbo Z were bulletproof. Even with the boost turned up.my money's on the pump
2005 BMW 330i ZHP 6MT. Built 11-19-04. Bought 4-2012.
Stock: Nav, leather, PDC, Xenon
Added by me: OEM Alarm, OEM heated seats, OEM aux kit, OEM Bluetooth, intravee, M3 strut brace, BMW Performance Intake, Nappa leather arm rest, updated LCM (triple blink, euro hazards, trifecta lighting, 3 stage brakes), temp gauge
Enforcer
fuel pump or cats, I would bet on cats since I had the same exact problem on my E36 years back when I didnt use BMW approved Gas stations.
2007 Interlagos Blue BMW M5 SMG
Eibach Springs, 12mm Spacers, Dinan Exhaust, Res Delete, Stage 3 AEM CAI, Eurocharged Tune, 35% tints.
Big Earner
wait, wut?
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