Hi there guys was just wondering if some one could help me?
I recently went to look at a MK4 golf R32, i did all the checks and road tested it.
When i road tested it i did some three point turns and lock to lock to check for any noises from the rear diff.
Sure enough if felt like one of the rear wheels was locking up or sticking on, at this point i walked away from the car.
While still there the seller took the car out and came back after a few minutes. we then performed the same test and the car performed flawlessly. I am still not interested in buying this car, however i was wondering why a short drive could sort out this issue ? Could the car have been stood for a while ? Is there anyone out there that can answer this ? Greatly appreciated
Haldex system is playing up. The guy removed fuse 31. Usually a simple fit when scanned with vagcom as 99% of the time it`s either the haldex controller ( most common ) or pre charge pump that needs replacing.
Not a big job to fix and i sell used pumps and controllers on here so if the car is a good price might be worth a re visit. If the seller didn`t say anything about it though it would have to be cheap as there may be other stuff as well he hasn`t said about as he obviously isn`t an honest seller.
He probably did not do anything.. just heated up the car and than haldex oil become thiner and clutch plate no more locked... But better to step away as you did.
That only works if the pre charge pump has started to go weak and not make enough pressure to prime the haldex system meaning the 4wd would not work to start with. The rear was binding so the pump is working but not switching off over pressurizing the haldex system so the 4wd stays on permanently causing the binding feeling like you get in the old fixed 4wd evo`s etc.
The haldex clutch plates work under oil pressure they cannot stick on because of thick cold oil as the oil would have to be thin for the system to work to start with if there was a lazy pump or oil was thick/very cold, the plates would open as soon as the hand brake was put on or ignition turned off reverting back to 2wd straight away.
I seen this problem many times that haldex locking rear end in cold.. after 10minutes driving it become OK and you can park just fine.
It could be worn plates / stuck controller? + old cold dirty oil i just dont know but it is very common.
If the current mileage was close to 60k, then it would only have been changed twice and due it's next change imminently. But as you say there were other issues.
Yes i would change the filter at the same time, goes without saying i think. Thank you for your input.
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