What makes a VW Transporter T5 leak coolant?
When the seals leak it usually dumps coolant into the engine oil (making it look like a failed head gasket) which is bad news if you don’t spot it early. Running low on coolant frequently would be an indication of early failure.
What are the symptoms of a VW Transporter T5 problem?
To identify the problem the symptoms listen out for a rattle on the engine on idle, this can be fairly subtle at first but gradually builds the further the part is worn. Other symptoms can sound like a slight misfire or slight stutter when you are pulling away. Raise the clutch slowly in first gear and feel out for an unexpected judder.
What happens if your van engine overheats?
Your van’s engine features a cooling system to prevent it from overheating during normal operation, but a surprisingly large number of items can cause this process to go awry. An overheating engine can suffer permanent internal damage such as a cracked engine block or cylinder head, so it’s important to get the issue resolved as soon as possible.
What causes central locking on a VW Transporter T5?
Again, your coolant level light should light up on the dash to give you a bit of warning. Ignore the low coolant light at your peril as your engine will eventually overheat and fail. On older higher mileage T5’s it is fairly common to hear of electrical problems that cause the central locking to play up.
What causes coolant to leak out of catalytic converter?
It’s far more likely that the coolant is leaking down the outside of something, dripping onto the catalytic converter and then dripping off the bottom. The most likely sources of a leak would be a hose, the temperature sensor, the thermostat, the water pump, or, just possibly a cracked head gasket that is leaking coolant to the outside world.
Why is my water pump leaking on my VW T4?
If you have a pin hole leak, then the high pressured oil passes very easily into the coolant system. These are the most common cause for oil being found in the cooling system on a VW T4 and is a cheap and easy fix. Make sure you check this before looking into the more expensive water pump or head gasket repairs.