N54Tech.com - International Turbo Racing Discussion
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Sherm Sherm is offline
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Join Date: Feb 2019
Car: 535xi e61
Default Simple newb problems - 02-21-2019, 05:39 PM

Hello,


Decided to turn up my wagon.

Did the walnut cleaning. Intake, catch can, dci and started the car. Ran rough. Restarted and it smoothed out. Let it warm up and shut it down for the night. The next morning installed jb4 and it would not start. Removed and it would not start. Traced fuel system and pump was getting voltage but not running. So new lpfp put in today. Again it will crank but not start with the jb4 connected. And now whith it disconnected it starts but hunts hard with no accel pedal control.



Any leads. Would hate to take intake off again tracing steps if it is something else.

Thanks

Sherm
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Ancient8989 Ancient8989 is offline
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Car: 335i
Default 02-21-2019, 07:20 PM

Adaptions?
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Sherm Sherm is offline
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Car: 535xi e61
Default Yesterday, 04:43 AM

I think i understand the question. The jb4 is removed and . I dont know if there is previous programing on the car. How would one find out and remove it?
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N54_ABQ N54_ABQ is offline
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Join Date: Apr 2018
Car: 2007 BMW E92 335i
Default Yesterday, 08:31 AM

Double check that the throttle body plug is connected and secure. First time I did a walnut blast I forgot to reconnect that plug. It started but idle wandered and no response from pedal. Connected the plug and ran fine.

I've also seen a few times on friends N54s that resetting throttle adaptions via MHD will cause the same symptom, wandering idle and no pedal response.

Resetting throttle adaptions manually always fixed the issue.


2007 335i E92 6MT FBO, Stock Turbos
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Sherm Sherm is offline
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Car: 535xi e61
Default Yesterday, 10:13 AM

I rest the throttle via the accel pedal and now all is well. The new jb4 is removed for now. I think i may have made a installation error. Gone a ride the car as is a few days make sure its good with no more bugs then try the jb4 again
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