Volkswagen Transporter making a knocking sound - what's the cause?
My 2011 Volkswagen T5 Transpoter Kombi has started to vibrate. It has also made a few knocking sounds. Both disappeared when coasting in neutral or keeping a constant speed by putting my foot gently on the accelerator.
This has happened twice over the past few weeks, but I can't seem to reproduce the problem to show my mechanic who has checked over the basics - wheel bearings, suspension etc. Nothing coming up on the computer scan either. Can you offer any explanation?
This has happened twice over the past few weeks, but I can't seem to reproduce the problem to show my mechanic who has checked over the basics - wheel bearings, suspension etc. Nothing coming up on the computer scan either. Can you offer any explanation?
Asked on 4 February 2016 by Rod A
Answered by
Alan Ross
We would suggest that you check out the vacuum pump as if faulty is known to cause this type of noise. It can be the push rod not following the camshaft.
Start the engine and if the noise is there ,then pump the brake pedal ,if the noise goes then it is the Pump.
Start the engine and if the noise is there ,then pump the brake pedal ,if the noise goes then it is the Pump.
Looking for a garage you can trust? Honest John's Good Garage Guide has thousands of reader recommended garages, plus how-to guides and tips on servicing.
The Good Garage Guide
From economical vans to those that have the largest payloads, we have a shortlist for everyone - click to find out which will suit your needs.
Undecided on which van to buy? Our Top 10 shortlists can help...Similar questions
Driving down a country lane I hit a deep pothole that was covered by a puddle. I was probably going around 25-30mph. My front wheel on the passenger's side is now rattling/squeaking. It’s not constant,...
My Peugeot Partner Tepee recently developed a knocking noise from underneath the vehicle when I go over bumps, rough road etc. I've had it looked at by two different garages and they can't figure out where...
My Mk5 Volkswagen Golf, with hybrid stage two turbo, was making a whistling noise. It's now stopped and won't restart, plus lost all oil. The exhaust shows signs of oil in end pipes. What could this be?
