Shifting Weird, Help!

JDrago1926 · 07-13-2013, 10:41 AM

My car is getting a backpressure jolt on the decel of 5 MPH and lower. The car jolts and almost "freezes" when it does, any idea? This doesn't happen everytime but, if I slowly let it decel, it feels like it gets a jolt of backpressure going through the exhaust.

JDrago1926 · 07-13-2013, 02:54 PM

Anyone...?

dAng! E90 · 07-13-2013, 03:40 PM

Manual or Automatic?

JDrago1926 · 07-13-2013, 03:44 PM

Quote:

Originally Posted by dAng! E90

Manual or Automatic?

Automatic

jaykayelemenohpee · 07-13-2013, 04:49 PM

In sport or regular driving? In sport it will shift down to first and jolt if you slowly come to a stop. In regular drive it stays in second.

JDrago1926 · 07-13-2013, 04:54 PM

Quote:

Originally Posted by jaykayelemenohpee

In sport or regular driving? In sport it will shift down to first and jolt if you slowly come to a stop. In regular drive it stays in second.

In drive mode only, sport mode feels a bit jolty (because the downshifting) this isn't a downshift more like my car freezes and just spits a quick back pressure through.

JDrago1926 · 07-13-2013, 06:48 PM

I was told this could be my torque converter... isn't that crazy expensive to fix? I have an extended warranty on the engine and transmission, bought the car less than 3 months ago.

Does anyone else think that it's the torque converter?

JDrago1926 · 07-13-2013, 08:13 PM

Anyone experiencing the same thing?

JDrago1926 · 07-14-2013, 11:17 PM

Anyone?

Wedge1967 · 07-14-2013, 11:21 PM

This is a common issue with the ZF transmission because of the electronic stall on the torque converter. I said it was the torque converter, but I never said it was an issue. It's not an issue and it's just something you'll have to live with unless your transmission is not running the latest flash and programming. Once you get your cable, we can check that as well as resetting the adaptation which could clear it up.

JDrago1926 · 07-14-2013, 11:25 PM

Quote:

Originally Posted by Wedge1967

This is a common issue with the ZF transmission because of the electronic stall on the torque converter. I said it was the torque converter, but I never said it was an issue. It's not an issue and it's just something you'll have to live with unless your transmission is not running the latest flash and programming. Once you get your cable, we can check that as well as resetting the adaptation which could clear it up.

Thanks Wedge, makes sense... I'm hearing a cracking noise as well in my exhaust while driving sometimes (exhaust leak)?

Wedge1967 · 07-15-2013, 08:32 AM

Quote:

Originally Posted by JDrago1926

Thanks Wedge, makes sense... I'm hearing a cracking noise as well in my exhaust while driving sometimes (exhaust leak)?

No, that is normal also.

07-13-2013, 10:41 AM	#1
JDrago1926 335i Owner 58 Rep 839 Posts Drives: BMW 335i 4 Door Join Date: May 2013 Location: New York iTrader: (4) Garage List 2007 BMW 335i [0.00]	Shifting Weird, Help! My car is getting a backpressure jolt on the decel of 5 MPH and lower. The car jolts and almost "freezes" when it does, any idea? This doesn't happen everytime but, if I slowly let it decel, it feels like it gets a jolt of backpressure going through the exhaust. __________________ E90 - 2007 BMW 335i Sedan 45K miles 7" VRSF FMIC \| BMS DCI \| AR Catless DPs \| KW v2 Coilovers \| M3 Front Control Arms
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07-13-2013, 02:54 PM	#2
JDrago1926 335i Owner 58 Rep 839 Posts Drives: BMW 335i 4 Door Join Date: May 2013 Location: New York iTrader: (4) Garage List 2007 BMW 335i [0.00]	Anyone...? __________________ E90 - 2007 BMW 335i Sedan 45K miles 7" VRSF FMIC \| BMS DCI \| AR Catless DPs \| KW v2 Coilovers \| M3 Front Control Arms
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07-13-2013, 03:40 PM	#3
dAng! E90 The bigger they are... 18 Rep 264 Posts Drives: Jet Black '07 335i Join Date: Dec 2011 Location: Pelham, AL iTrader: (0)	Manual or Automatic? __________________ Tom Williams BMW Service Advisor '07 335i Sport 219M Wheels, MMW CF Lip, Shadowline Taillights, Vishnu Procede, BMS DCI, BMS OCC, Aasco LW Flywheel, South Bend Clutch, Turner 90mm Studs, Stoptech pads rotors and lines, BMS LED Tag Lights, BMS Clutch Stop, BMS Clutch Non-Delay Valve, ACS Style Rear Glass Spoiler
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07-13-2013, 04:49 PM	#5
jaykayelemenohpee First Lieutenant 9 Rep 334 Posts Drives: 335i Join Date: Mar 2013 Location: Central Phoenix iTrader: (0)	In sport or regular driving? In sport it will shift down to first and jolt if you slowly come to a stop. In regular drive it stays in second.
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07-13-2013, 06:48 PM	#7
JDrago1926 335i Owner 58 Rep 839 Posts Drives: BMW 335i 4 Door Join Date: May 2013 Location: New York iTrader: (4) Garage List 2007 BMW 335i [0.00]	I was told this could be my torque converter... isn't that crazy expensive to fix? I have an extended warranty on the engine and transmission, bought the car less than 3 months ago. Does anyone else think that it's the torque converter? __________________ E90 - 2007 BMW 335i Sedan 45K miles 7" VRSF FMIC \| BMS DCI \| AR Catless DPs \| KW v2 Coilovers \| M3 Front Control Arms
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07-13-2013, 08:13 PM	#8
JDrago1926 335i Owner 58 Rep 839 Posts Drives: BMW 335i 4 Door Join Date: May 2013 Location: New York iTrader: (4) Garage List 2007 BMW 335i [0.00]	Anyone experiencing the same thing? __________________ E90 - 2007 BMW 335i Sedan 45K miles 7" VRSF FMIC \| BMS DCI \| AR Catless DPs \| KW v2 Coilovers \| M3 Front Control Arms
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07-14-2013, 11:17 PM	#9
JDrago1926 335i Owner 58 Rep 839 Posts Drives: BMW 335i 4 Door Join Date: May 2013 Location: New York iTrader: (4) Garage List 2007 BMW 335i [0.00]	Anyone? __________________ E90 - 2007 BMW 335i Sedan 45K miles 7" VRSF FMIC \| BMS DCI \| AR Catless DPs \| KW v2 Coilovers \| M3 Front Control Arms
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07-14-2013, 11:21 PM	#10
Wedge1967 Banned 125 Rep 2,172 Posts Drives: '07 e92 AT Sport Montego Blue Join Date: Sep 2011 Location: Portland, OR iTrader: (3)	This is a common issue with the ZF transmission because of the electronic stall on the torque converter. I said it was the torque converter, but I never said it was an issue. It's not an issue and it's just something you'll have to live with unless your transmission is not running the latest flash and programming. Once you get your cable, we can check that as well as resetting the adaptation which could clear it up.
	Appreciate 0 Quote