Engine braking not working

redwing88 · 07-08-2018, 08:56 PM

Hi,

Strange issue with my Z4 M coupe, when letting off the throttle completely instead of deaccelerating like it should it just coasts for a few seconds then it enigne brakes and goes back to coasting. This switching between the two happens repeatedly until 2000 RPM is reached. The car still slows down but much slower because of the coasting that's happening.

By coasting I mean the RPM doesn't drop and you can feel the car isn't braking but just coasting as if in neutral.

Any ideas?

pungo · 07-08-2018, 10:04 PM

What gear are you in and what is your speed? Did this just start happening?

redwing88 · 07-08-2018, 11:19 PM

Quote:

Originally Posted by pungo

What gear are you in and what is your speed? Did this just start happening?

Happens past 30km/h and in all gears. Yes just started happening.

StickMon · 07-09-2018, 11:17 AM

Scan it for codes?
I had mine go into a strange mode once when I had a flaky TPS.
Ran OK, but was a little down on power and throttle return was very very slow.

Steeler · 07-10-2018, 10:29 AM

How does the clutch feel while accelerating?
Is it slipping?

07-08-2018, 08:56 PM	#1
redwing88 New Member 4 Rep 6 Posts Drives: 650i m3 z4m Join Date: Feb 2018 Location: Canada iTrader: (1)	Engine braking not working Hi, Strange issue with my Z4 M coupe, when letting off the throttle completely instead of deaccelerating like it should it just coasts for a few seconds then it enigne brakes and goes back to coasting. This switching between the two happens repeatedly until 2000 RPM is reached. The car still slows down but much slower because of the coasting that's happening. By coasting I mean the RPM doesn't drop and you can feel the car isn't braking but just coasting as if in neutral. Any ideas?
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07-08-2018, 10:04 PM	#2
pungo Colonel 879 Rep 2,546 Posts Drives: Z4MC-X3-35i-525i, Corrado G60 Join Date: Nov 2007 Location: MD iTrader: (5) Garage List 2011 BMW X3 x35i [0.00] 2001 BMW 525i [0.00] 2007 BMW Z4 M Coupe [8.76]	What gear are you in and what is your speed? Did this just start happening?
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07-09-2018, 11:17 AM	#4
StickMon My other car is on Mars 636 Rep 3,124 Posts Drives: 2006 MR Join Date: Feb 2011 Location: Lo-Cal iTrader: (1)	Scan it for codes? I had mine go into a strange mode once when I had a flaky TPS. Ran OK, but was a little down on power and throttle return was very very slow. __________________ Warning: May contain traces of nuts.
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07-10-2018, 10:29 AM	#5
Steeler Colonel 2429 Rep 2,704 Posts Drives: Built not Bought 04 Z4 VF Join Date: Feb 2013 Location: Kitchener Ontario Canada iTrader: (2)	How does the clutch feel while accelerating? Is it slipping? __________________ W2A Intercooled Vortech V3Si, custom ducting, Alpha N, 60# Bosch,2.62 pulley, multi port WMI, Severn Tuning(pokeybritches), Tial, magnaflow,SS race muffler, 42 design,3.91LSD, H&R, Hotchkis,ST coils,Konis, Megan camber arms, AKG SS, Nylon mounts, Poly bushings, Carbon interior, CF Aero.APEX
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