Bad JBD Unit?

FormerRotor · 05-24-2013, 09:11 AM

Quote:

Originally Posted by dzlmoose

I seem to be getting the rough idle on starts when my car is really cold. I am gonna check my harness as well.

Also if I want to turn up my JBD do I have to make sure the ecu is in sleep mode like when I install it?

I would let it sleep first just to be on the safe side...we're only talking about a few hundred extra seconds.

335dFan · 05-24-2013, 09:50 AM

Hmmm, maybe I should turn up my JBD a little bit too. Just what I need: more go power.

Best4x4xFar · 03-09-2020, 01:06 PM

So I know this is a really old thread, but I was wondering if anyone heard what the OP's solution was in the end?

I purchased a second hand JBD and installed it on my '13 X5 35d this weekend. And I'm noticing a rougher idle, and some vibration I don't recall before when holding constant speeds in the 30-45 mph range.

I haven't really gotten on it yet (family was with me all day yesterday), but notice little if any difference so far in my normal driving (I'm a bit of a lead foot, even with the family aboard)

Going to double check the connections per suggestions, and hopefully get a chance in the next day or two to 'lean on it' a bit harder and see if I feel the difference. I would think if the connection was bad there would be greater issues though, no?

05-24-2013, 09:50 AM	#24
335dFan Jumping Jack Flash 321 Rep 1,692 Posts Drives: 2021 X3 M40i Join Date: Nov 2012 Location: California (east of Sacramento) iTrader: (0) Garage List 2021 BMW X3 M40i [0.00] 2017 Toyota Prius [0.00]	Hmmm, maybe I should turn up my JBD a little bit too. Just what I need: more go power. __________________ 2021 X3 M40i: M Sport Differential, Adaptive M Suspension. Previous BMWs: 1971 BMW 2002, 1973 BMW R75/5, and 2011 BMW 335d Previous Other Vehicles: '67 Cougar, '70 911e, '86 Jetta Diesel, '05 and '12 Foresters, et al.
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03-09-2020, 01:06 PM	#25
Best4x4xFar Enlisted Member 20 Rep 46 Posts Drives: 2013 X5 35D Join Date: Sep 2010 Location: Maryland iTrader: (0)	So I know this is a really old thread, but I was wondering if anyone heard what the OP's solution was in the end? I purchased a second hand JBD and installed it on my '13 X5 35d this weekend. And I'm noticing a rougher idle, and some vibration I don't recall before when holding constant speeds in the 30-45 mph range. I haven't really gotten on it yet (family was with me all day yesterday), but notice little if any difference so far in my normal driving (I'm a bit of a lead foot, even with the family aboard) Going to double check the connections per suggestions, and hopefully get a chance in the next day or two to 'lean on it' a bit harder and see if I feel the difference. I would think if the connection was bad there would be greater issues though, no?
	Appreciate 0 Quote