I'm writing a webcomic that's soon to feature a Volvo 240. Why? Because... just... BECAUSE. Anyways, I need some helpful Volvo driver to describe the following as onomatopoeia:

1. Volvo 240 diesel with turbo at idle

2. Volvo 240 with turbo at full blat

3. Volvo 240 gearbox (does it click, shunt, clunk, what?)

Help me out and you'll get due credit once I post it.