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Car hesitate to move off

This is a discussion on Car hesitate to move off within the Mercedes-Benz CLA45 AMG forums, part of the Mercedes-Benz CLA Model Specific Forums category; Hard to log everything in one.. well maybe this obd sucks.. got one coming in this Thursday... anyway I tried to charge the aux battery ...

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Thread: Car hesitate to move off

  1. #31
    Newbie Botte_guy's Avatar
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    Hard to log everything in one.. well maybe this obd sucks.. got one coming in this Thursday... anyway I tried to charge the aux battery yesterday turns out that the aux battery can’t be recharge. I’m having the aux battery malfunction warning now... aux battery will arrive today

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    The electrical demons are just hanging out with you ... good grief!

  • #33
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    Car didn’t stall today. But there’s a hesitation while moving off.. I’ve upload 2 photo. The one with 4 lines logs are ok just showing an example of a normal drive. The one with 3 logs are the one with problems
    https://postimg.cc/gallery/uel19ywg/

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  • #34
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    Low throttle high intake pressure... while high throttle with Low intake pressure, I have forgotten to log fuel rail pressure but I have added it in now

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    Pls note that I wasn’t on full throttle when it happens. More like partial throttle

  • #36
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    Man this wabbit hole is getting deeper ...
    Was thinking to at least try to diagnose (long shot anyway) you will need boost iat rpm cattemp throttleactual throttlecommanded fuelrail voltage timing ambient ... then plot them together and hunt for anomalies
    If nothing looks “odd” then just have to bow to the dealer or indie mechanic

  • #37
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    Don’t think my obd are capable of doing this much logging haha..

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    Should be software limited ... tracking a couple dozen should not be a problem

  • #39
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    Replace voltage regulator on alternator
    80+ dollars for part
    2016 C63S AMG IRIDIUM FULLY LOADED - WITH RECARO'S -
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    2012 MERCEDES C300 4MATIC SPORTS -
    old car 14 CLA45 AMG
    07 SUBARU STI
    02 Subaru wrx

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    Odd for a vreg to go but thats a thought

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