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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Mon, Apr-16-2018, 03:01:29 AM   #1
djs4021
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Default Limp Mode after storage. DKP-Angle stays @ 0v?

I made a mistake when I stored my car outdoors this winter. I drove it onto an outdoor car cover, then covered it with an outdoor cover. This caused a lot of moisture to condense under the hood and inside the car. My head, Fuel rail, throttle bodies and miscellaneous accessory belt components (alternator, etc) all had a light coating of corrosion or moisture on them. The car had no performance issues prior to storage.

VEHICLE:
2004 E46 M3 6MT

SYMPTOMS:
When I started it for the first time this season, the EML light came on. The car will not rev past 2k rpm. It is difficult to get it past 20mph. I moved the car into my garage and let it dry for a week. When I started it today, same symptoms, I just have a CEL now as well.

CODES:
DME- E6 DME - Electric throttle: Setpoint/actual value deviation
DME - 6B DME - Electric throttle: Self-test
D0,D1,D2,D3,CF,CE - Misfiring cyl 1-6 without cylinder cutout


TROUBLESHOOTING:
Syphoned old gas and added 2 gallons of fresh high-octane fuel
Cleaned top TPS sensor connector - This looked to be fine with no corrosion
Reset adaptations in INPA
Scanned live "TPS values" with INPA - Not sure what to make of them


When I hit the gas, DKP-angle stays at zero, PWG Voltage P1 increases linearly.

Does anyone know which of the three sensors (Upper TPS, Lower TPS, Gas peddle, Throttle actuator) DKP-angle reads from? I can't find this information anywhere and I'd love to not just start ordering sensors :/
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Old Mon, Apr-16-2018, 05:38:52 AM   #2
Joshe46
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Default Re: Limp Mode after storage. DKP-Angle stays @ 0v?

Why did all of this moisture/ corrosion occur is what Im wondering?
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Old Mon, Apr-16-2018, 06:52:16 AM   #3
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Default Re: Limp Mode after storage. DKP-Angle stays @ 0v?

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Originally Posted by Joshe46 View Post
Why did all of this moisture/ corrosion occur is what Im wondering?
He put a tarp on the bottom of the car that he drove on then covered it with another tarp causing the perfect climate for the tarps to sweat , any water that came on to the bottom tarp evaporated then was caught by the upper tarp causing any metal to develope sweating in sunny days

Sorry OP, but if the car is running rough I would check the spark plugs

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Old Mon, Apr-16-2018, 08:09:56 AM   #4
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Default Re: Limp Mode after storage. DKP-Angle stays @ 0v?

Sorry, don't know where the angle is measured from, but, run a bottle of HEET through a tank to get rid of moisture in fuel lines. That should help with misfires.

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'05 M3 6MT coupe

All DIY: 330 ZHP steering rack, diffsonline 4.1 diff with rem polish, E60 short shifter lever, AKG black diff bushings/subframe bushings, Rogue rtab, WPC rod bearings, Beyer driveshaft, full SS (SS stepped V1, catted S1, resonated S2, SS sport), Sachs clutch/flywheel, rear main, VANOS bullet proofing with anti-rattle, valve adjustment, cooling refresh, Ohlins R&T/Swift 448f 672r/GC street tops and camber plates, AFD E85 Proflex kit.

Happy to help with VANOS or any other DIY job around NorCal
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Old Mon, Apr-16-2018, 03:24:38 PM   #5
djs4021
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Default Re: Limp Mode after storage. DKP-Angle stays @ 0v?

Thanks for the suggestions guys - I will pick up a bottle of HEET tonight on my way home from work and check my plugs for corrosion.

What is odd is that the car doesn't really idle rough. It just revs really slowly and seems like it has a quick laborious time getting back to a normal idle after revving (has a deep/vacuum like* RPM plunge to 400-500 before returning to normal idle). When I cleared the adaptations, the misfire codes disappeared. As the ECU stands right now, the only code left is the E6 DME code.

I'll report back with how things look after checking plugs/idling through some HEET treatment.
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Old Mon, Apr-16-2018, 04:50:13 PM   #6
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Default Re: Limp Mode after storage. DKP-Angle stays @ 0v?

Quote:
Originally Posted by moezer View Post
He put a tarp on the bottom of the car that he drove on then covered it with another tarp causing the perfect climate for the tarps to sweat , any water that came on to the bottom tarp evaporated then was caught by the upper tarp causing any metal to develope sweating in sunny days

Sorry OP, but if the car is running rough I would check the spark plugs

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I thought a tarp beneath a car acted as a vapor barrier and was a good thing? I suppose thats only the case if stored indoors. What is the proper way to store outdoor then?
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Old Mon, Apr-16-2018, 08:59:35 PM   #7
djs4021
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Default Re: Limp Mode after storage. DKP-Angle stays @ 0v?

I think it had a greenhouse sort of effect. It trapped all of the humidity in a bubble. The bottom cover would get saturated, the liquid would evaporate and then get trapped by the waterproof upper cover. In my head, I was just ensuring I was keeping the elements out

I think I would have been better off just pulling it onto outdoor foam puzzle pieces then using 1 car cover like I did last year. - Like these:
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Old Wed, Apr-18-2018, 04:16:47 AM   #8
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Default Re: Limp Mode after storage. DKP-Angle stays @ 0v?

I was thinking the same thing as why u wrapped the car lol the only thing to worry about when storing outside is mice and them getting in to ur engine bay or exhaust

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Old Thu, Apr-19-2018, 09:33:35 PM   #9
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Default Re: Limp Mode after storage. DKP-Angle stays @ 0v?

If it doesn't go to limp mode until you hit the throttle, then it could be your throttle bodies are stuck from gunk in the bores that hardened while sitting. This happened to me when I parked my car on the driveway in the fall for 3 weeks. Open the hood and start the car - I believe the throttle actuator linkage moves during a self test at some point. Also see if you can manually operate the linkage to open the throttle bodies. You may or may not have to disconnect it from the actuator motor.
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Old Thu, Apr-19-2018, 09:35:53 PM   #10
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Default Re: Limp Mode after storage. DKP-Angle stays @ 0v?

http://m3forum.net/m3forum/showthread.php?t=568410
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Discussing Limp Mode after storage. DKP-Angle stays @ 0v? in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)