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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > 5 Codes today - Half engine light



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      03-26-2014, 08:47 PM   #1
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5 Codes today - Half engine light

Hey guys, I filled 5 Gals of E85 100 miles ago with 7 Gals of 93 - car started taking longer cranks which was fine but this afternoon it would start and RPM bouncing from 1500 - 400 .. Radiator Fan going full bloom (its 20 degs outside!!!!!!!!) ... I shut it down, turn back on same ... drove home w half engine light read codes :

30BE - Injector calibration plausibility
2B2C - throttle valve initialization - bank 1
29F2 - high fuel pressure system, fuel pressure
29DC - cyl injection - switch off

(car is BONE STOCK)
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      03-26-2014, 09:03 PM   #2
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HPFP might be the main culprit, why use E85 in a stock car? There is no point
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      03-26-2014, 09:09 PM   #3
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Quote:
Originally Posted by new2the3 View Post
HPFP might be the main culprit, why use E85 in a stock car? There is no point
I was gonna tune but........ anyway I filled in another 7 Gals of 93 to dilute the E85 but not helping, has it fried out ?
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      03-27-2014, 11:34 AM   #4
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help .... 29dc .... do I need new LPFP ?
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      03-27-2014, 11:53 AM   #5
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You can not run E85 on a stock (335) car especially if it's cold out. I have seen to many loaner cars towed in where people tried to go cheap on filling the tank with E85. Guess what, tow from near the gas station or while there.
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      03-27-2014, 12:10 PM   #6
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Quote:
Originally Posted by 007_e350 View Post
Hey guys, I filled 5 Gals of E85 100 miles ago with 7 Gals of 93 - car started taking longer cranks which was fine but this afternoon it would start and RPM bouncing from 1500 - 400 .. Radiator Fan going full bloom (its 20 degs outside!!!!!!!!) ... I shut it down, turn back on same ... drove home w half engine light read codes :

30BE - Injector calibration plausibility
2B2C - throttle valve initialization - bank 1
29F2 - high fuel pressure system, fuel pressure
29DC - cyl injection - switch off

(car is BONE STOCK)
You were trying to run E60 on a stock car. I bet your fuel trims were maxed LP fuel was low and you cooked your HPFP. You sent it for a loop. Make sure you clear your codes and reset adaptations. You might be able to get it to come back around if you stay stock.
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      03-27-2014, 12:19 PM   #7
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Quote:
Originally Posted by David1 View Post
You can not run E85 on a stock (335) car especially if it's cold out. I have seen to many loaner cars towed in where people tried to go cheap on filling the tank with E85. Guess what, tow from near the gas station or while there.
so whats the way out, empty the tank ? or pump's fried ? 29dc would be LPFP ?
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      03-27-2014, 01:12 PM   #8
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Quote:
Originally Posted by 007_e350 View Post
so whats the way out, empty the tank ? or pump's fried ? 29dc would be LPFP ?
Burn it out by running the car or drain it.
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      03-27-2014, 02:04 PM   #9
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Quote:
Originally Posted by Ingeniator View Post
You were trying to run E60 on a stock car. I bet your fuel trims were maxed LP fuel was low and you cooked your HPFP. You sent it for a loop. Make sure you clear your codes and reset adaptations. You might be able to get it to come back around if you stay stock.
great thanks - will advise after burning tank out
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      03-27-2014, 09:43 PM   #10
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Quote:
Originally Posted by 007_e350 View Post
great thanks - will advise after burning tank out
Guys its not drivable, engine is throbbing pretty bad ... 29F2 code this time (High pressure Fuel System: Fuel pressure) - If I get it towed to the dealer can they detect E85 ? Currently it has 5 Gals atleast in the full tank + Chevron Techron Inj cleaner

Last edited by 007_e350; 03-27-2014 at 09:58 PM.
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      03-27-2014, 10:40 PM   #11
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Hpfp has warranty until 110k I believe but even if they replace it you still have e85 in the car weather they find out or not. So I would deff drain it fill it up with 93 and take it to the dealership.
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      03-28-2014, 08:59 AM   #12
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They will test the fuel and if you have more than 15% the bill is on you. You need to get the e85 out of it. It only takes them 10 minutes to test the fuel. My dealership has samples from the stations near it on display in the shop. When they test fuel presure, they will test a sample.
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      03-29-2014, 03:01 AM   #13
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I removed the rear seat and pulled the fuel pump cover off - there are two hoses going into the pump, which one should I siphon the fuel off of ? Or do I need to pull the fuel pump out ??
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      03-29-2014, 12:21 PM   #14
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You just need a syphon kit from the parts store.
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      03-29-2014, 01:34 PM   #15
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+1 on syphoning it out.

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      03-29-2014, 02:13 PM   #16
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Ouch e85 on stock car
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      03-30-2014, 03:08 PM   #17
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Its done - had to slightly pull the pump out to insert hose into the fuel tank - dealer was asking me abt the fuel smell in the car lol
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