E39 523i M52TU heavy acceleration problems

[suren2485]

Hi guys, I'm having issues with my ride, sometimes when i accelerate the RPM climbs but the car doesn't go fast, scanned for error no fault found. I updated the ECu to a newer version but i don't see any major improvement, i read is some other forums many say it could be the vanos seals. Any thought on this guys. Thanks in advance

 

[gendong]

How's your tyre pressure?

 

[suren2485]

I'm running 18 Front 245/40 & rear 265/35 pressure 36PSI

 

[JFT63]

I have never encountered such issue..any prob with idling? Or just the acceleration?

 

[ajimin]

Hi guys,

I'm having issues with my ride, sometimes when i accelerate the RPM climbs but the car doesn't go fast, scanned for error no fault found. I updated the ECu to a newer version but i don't see any major improvement, i read is some other forums many say it could be the vanos seals. Any thought on this guys.

Thanks in advance

Bro,
Have you ask your mechanic to synchronize your engine and gearbox setting?

 

[suren2485]

JFT63 - idling is perfect

ajimin - how to sync engine and gearbox, do you mean clearing the adaptive value for DME and gearbox ?

 

[Herbert]

Hi guys,

I'm having issues with my ride, sometimes when i accelerate the RPM climbs but the car doesn't go fast, scanned for error no fault found. I updated the ECu to a newer version but i don't see any major improvement, i read is some other forums many say it could be the vanos seals. Any thought on this guys.

Thanks in advance

Very unlikely it is vanos seals. Most likely it is the torque converter.

Bro,
Have you ask your mechanic to synchronize your engine and gearbox setting?

Wonder how does the mechanic synchronize the engine with the gearbox setting? Using what diagnostics tool....GT1?

 

[ajimin]

Very unlikely it is vanos seals. Most likely it is the torque converter.



Wonder how does the mechanic synchronize the engine with the gearbox setting? Using what diagnostics tool....GT1?

Our OM Shukok have same problem before on his E60, change the vanos seal but still the problem not fix...finally he DIY using software..mabye GT1. not very sure you need to ask him detail.

 

[infinityKL]

also check Oil Separator/Ventilation Valve ...

 

[suren2485]

InfinityKL - where is the Oil Separator/Ventilation Valve located ?

 

[Psykit]

Hi Suren,

This sounds like a torque converter issue. Engine speed does not match the output. Check that first.

 

[willy5]

If RPM climbs but car does not go, cud be torque converter or your gearbox clutches are worn.

 

[infinityKL]

InfinityKL - where is the Oil Separator/Ventilation Valve located ?

Just under the intake manifold.