Weird knocking noise
Question:
I was driving on my Opel Corsa B and felt a random knocking noise under the passenger footwell. Went and had a check underneath and didn’t find anything. The knocking has turned into thuds this morning and I’m starting to get worried. Can anyone suggest what it could be? Knocking only happens when the is no acceleration. It’s on the left side where the gearbox is.
Answer:
I’m going to take a rough guess here and say that your rear gearbox mount is stuffed. Can’t be a CV if you’re not in gear and travelling and the vibration at idle is likely to shake the engine back and forth, causing to rock on and off the busted mount. Holden pretty much have stopped selling new parts for the SB/Corsa B models, particularly the GSi models. I’m sure that someone would probably make some aftermarket items locally, but failing that, I’d check the wreckers for a second hand hub if you really need one ASAP.
