BMW ENGINE LAG PROBLEM


BMW N62 GAS PEDAL ENGINE LAG!

On BMW N62, N63 and other engines especially e65, e66, e60, e63, e64 series most likely you might experience some gas pedal lag delay or uneven power delivery at lows. It feels like you press on it and engine barely revs from lows or it revs, but you have to press it harder to feel it. Assuming engine and tranny do not have any problems and all other components run as they should, I mean no vacuum leaks, all sensors read correct values etc, but still it feels like gas pedal is slow at lows, usually in the city driving. Funny part BMW will tell you its normal lag because of drive by wire nowadays standard, though there was no delay on m62tu engines with similar drive by wire gas pedal back in 1999. Lots of people buy some magic gas pedal boosters 200-300$, but they should understand, that this booster simply sends 2x signal to DME (engine brain),so it basically feels like you press 2x harder. This method (if you call it a method) is not a good one for a few reasons:




-it will make your car less smoother or some say it fells jerky

-not safe, you can easily rear end someone in the city

-premature transmission wear and tear

-overall more stressful for the engine and tranny

-higher gas consumption

-overpriced 200$+

So we have been looking for a solution for a while and looks like we found it!!!

and its all original BMW OEM. You simply need to replace your gas pedal assembly with the newest one they sell at the dealers or online, but make sure they sell you the newer design, because newer pedal assembly is way better and has newer chip built in, also it has newer pedal design, so it wont get sticky if dirt or water gets there. You will be really surprised, that the lag will be gone and bmw will perform like it should without any lag from lows and overall will make it fell much smoother. Look at these pics:

newer part number is: 35426859999

you will find this pedal installed on the newest BMW F series

you can get it form the dealer or online, just make sure they sell you newer design only, because lots of sellers still have old pedals in stock.

newer gas pedal design:

newer_gas_pedal

newer_gas_pedal_sideview

older gas pedal design:

old_gas_pedal

gas_pedal_old




   It is very easy to remove it, just remove plastic cap,  unscrew the metal screw 2, and then disconnect a connector. Install a new one and done! you can reset engine adaptations, but not very necessarily, it will work as is.

Basically BMW updated gas pedal design for that reason, but of course they didn’t recall it, so they know this problem really well, otherwise why they completely redesigned it??

This modification will work on any BMW with similar part numbers.

2 thoughts on “BMW ENGINE LAG PROBLEM

  1. Al Beattie

    Hi
    I just spent $8k getting gearbox reconditioned on my 2008 E70 which has 70kms on it. Transmission fault came up on dash so got it checked by transmission specialist. error code stated clutch slippage between 4th &5th so got second opinion from Bmw dealer .Both Dealer and Transmission specialist said no option but to rebuild. Went with transmission specialist 2weeks after rebuild same warning light and error codes excactly the same as before repair took place.Repairer then got software updated,problem still exists and now says could be mechatronics. Could be another $5k Bill!
    Out of pocket 8k and nothing to show for it any suggestions appreciated .I don’t really get why both dealer and my repairer could have diagnosed the same problem and offered the same fix but it hasn’t solved the issue?
    Cheers

    Reply
    1. logic7repair@gmail.com Post author

      yes some tranny shops are cheap and they don;t care much about mechatronics, but in fact it is the most important. get it rebuild and don’t forget to reset adaptations

      Reply

Leave a Reply

Your email address will not be published. Required fields are marked *