GL Class (X164) 2007-2012: GL320CDI, GL420CDI, GL450, GL550

GL320 Rev chocking at 3,000 rpm , hard shifts

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Old May 13, 2018 | 05:18 PM
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GL 320 CDi
Unhappy GL320 Rev chocking at 3,000 rpm , hard shifts

Hi,
Need wise counsel here, please...

I have a 2008 GL320 ( 120k miles) recently it started choking and hard shifting if I rev too fast. If I push accelerator slowly it shifts fine, if I push the acceleration and punch it, it chokes at about 2.5-3k rpm, and then does a weird hard shift
It does not have any issues revving in neutral. Only when it's driving on the road.
No check engine light is on. What could it be ??
I hope it's not my Transmission. Is it a speed sensor or a vacuum leak perhaps ?

Last edited by jenxo; May 13, 2018 at 05:30 PM.
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Old May 14, 2018 | 03:53 PM
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alx
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Replace fuel filter. If problem persists car needs to be read as it might be a myrad of things. For starters it might be in limp mode.
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Old May 20, 2018 | 06:33 PM
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GL 320 CDi
It is the TRANSMISSION

Hi,
Need wise counsel here, please...

I have a 2008 GL320 ( 120k miles) recently it started choking and hard shifting if I rev too fast. If I push accelerator slowly it shifts fine, if I push the acceleration and punch it, it chokes at about 2.5-3k rpm, and then does a weird hard shift
It does not have any issues revving in neutral. Only when it's driving on the road.
No check engine light is on. What could it be ??
I hope it's not my Transmission. Is it a speed sensor or a vacuum leak perhaps ?



So....
I took it down to my Mercedes Indie Mechanic. He drove it, and within 60 seconds said..."Transmission"!
Without having any check engine lights, his check system showed P0894 ( TRANSMISSION - like no oil, solenoids etc)
There was no oil leaking from my Transmission. Perfectly clean.
So....I now need to spend $1,000 to get a VALVE Body with my components remanufactured. 120,000 miles on my odometer.
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