HELP! Severe acceleration lag

juld0zer · 06-16-2014, 04:50 PM

it's not normal mate. what you are experiencing is probably heat related. Something along the lines of heatsoak or warm intake air temperatures. That will easily cause a lag on take off that feels more like nothing is happening for a second or 2, then the engine roars to life.

i drive with VDC on 98% of the time too.

another way i can describe my issue is to imagine your gas pedal has been remapped to only open the throttle plate up to 1/4 of its full range. so foot to the floor = 25% throttle. halfway = 12.5%... painful. Scary when merging into traffic - esp if you expect normal acceleration but get nothing.

Page EC-481 of the fsm describes this as being the cause for P1805 (brake switch fault) : "A brake switch signal is not sent to ECM for ex- tremely long time while the vehicle is being driv- en."
This supports the highway driving situations where some people have experienced this problem. but i've had it happen to me while driving in urban areas where there are a lot of turns, traffic, speed bumps etc - basically lots of brake use

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06-16-2014, 04:50 PM	#11 (permalink)
juld0zer Enthusiast Member Join Date: Nov 2012 Location: Sydney Posts: 428 Drives: 11 Nissan 370Z MB M6 Rep Power: 140	it's not normal mate. what you are experiencing is probably heat related. Something along the lines of heatsoak or warm intake air temperatures. That will easily cause a lag on take off that feels more like nothing is happening for a second or 2, then the engine roars to life. i drive with VDC on 98% of the time too. another way i can describe my issue is to imagine your gas pedal has been remapped to only open the throttle plate up to 1/4 of its full range. so foot to the floor = 25% throttle. halfway = 12.5%... painful. Scary when merging into traffic - esp if you expect normal acceleration but get nothing. Page EC-481 of the fsm describes this as being the cause for P1805 (brake switch fault) : "A brake switch signal is not sent to ECM for ex- tremely long time while the vehicle is being driv- en." This supports the highway driving situations where some people have experienced this problem. but i've had it happen to me while driving in urban areas where there are a lot of turns, traffic, speed bumps etc - basically lots of brake use