Booted my 2001 elegant the other day on the wet, then all of a sudden it wouldn’t go anywhere, it just rolled to a stop. Got it back home and found that the drivers side shaft had popped out of the outer cv joint. But i was confused as to why my car would not move anymore? If it is haldex gen 1 should it not have directed the power to the rear wheels if the front driveshaft could not turn the wheel?  

 

Sam

Quite likely the Haldex packed up ages ago, from what I have been told they are very sensitive to overdue fluid changes, or poorly done (inaccurate quantities etc) fluid changes

 

I am surprised you still have a 2001 4x4 as the maintenance on the 4x4 is expensive and often more than car is worth, so usually scrapped long before 18 years old

 

 

 

This is a project car running a rebuilt 260bhp AUQ engine so it's far from old, i have replaced pretty much everything other than the haldex unit and the CV joints obviously need a bit of attention or they need uprating because the torque destroyed them! .  I was really hoping for more of a constructive comment than it's an old car, 50% of the UK nation run cars older than 2001.. lol

 

But anyway the Skoda Elegance is a VAG group car and shares the same parts as VW/Audi group cars including the Gen 1 Haldex, so what you are saying SurreyJohn is all 2001 VAG group cars are expensive to maintain and should be binned? 

 

Anyway back onto my Haldex...  i have changed the oil on the Haldex personally myself using the correct genuine stuff and the proper technique, i scanned the Haldex with Vagcom and it shows no errors, the pump also seems to run when i operate it via Vagcom.  But being new to Haldex and how it works that's as far as my knowledge goes with Audi's 4x4 systems. 

 

No offense SurreyJohn... But please can someone who knows how Haldex works help me out or contact me?

 

Using logic i guessed the 4wd didn`t engage because the traction control didn`t detect slippage on the front wheel as it wasn`t turning at all and these cars i`m guessing only have a regular diff at the front.  But i need some clarification from someone who knows about haldex please as to whether the entire system not working because of a broken front drive shaft is probably normal?  I thought maybe it might be a safety design, because if this ever happened and you were driving at speed you wouldn`t want your car to continue running if a drive shaft broke at the front, would be pretty dangerous.  

 

Cheers,

Samuel

 

@sammyhale30 - AIUI Haldex is a part-time electronically controlled 4x4 system. It works by detecting differential wheel speeds using the ABS sensors. From your description, the front diff was, indeed, sending all the drive to the popped shaft, but the Haldex had no idea about that because the wheel sensors were all saying there was no wheel slip.

Thank you Ken appreciate your response.  Confirms my thoughts.  Luckily i have a spare drivers side CV joint off my VRS, so i`m going to fit that.

Edited 28 May, 20197 yr by sammyhale30