Mitsubishi Problems

Backfiring is usually caused by a problem with the ignition system, and usually fixed by replacing the spark plug leads. It happens when the LPG/air mix in the intake manifold is ignited by a random spark, and it often results in the air intake and filter being blown away. It is unusual to damage the catalytic converter and have the computer meltdown, and damage to the auto trans is unheard of. Check the ignition system and certainly replace the spark plug leads, and have the auto checked by a specialist.

The diesel engine has a chain, so there's no requirement to replace it as there is with a belt.

The fan is designed to come on when the engine reaches a certain temperature and cycle as required to maintain a safe operating temperature. Yours seems to be doing that, and as there is no suggestion that the engine is overheating I wouldn’t be concerned about it. If you are get a mechanic to check the temperature switch controlling the fan’s operation.

They are prone to using oil because of worn valve stem seals, so I would have a mechanic check that.

Get it up to speed to get into top gear, and then operate the button. You should see or hear the revs rise, or fall when the button is pressed again and the overdrive gear re-engaged.

I’m surprised the dealer didn’t try and sell you a more powerful sound system! You could also check the firewall and make sure there are no gaps or openings that are letting the noise through. If there are seal them. Having made sure all is well there you could get some sound deadening material and apply under the floor covering on the firewall, floor and transmission tunnel.

Revisit the issue with your dealer. Mitsubishi’s current schedule under its capped price servicing deal is for the car to be serviced at intervals of 12 months or 15,000 km.

It’s clearly not the tyres, so start looking at the front-end. Begin with the wheel bearings, and then check the drive shafts and any other rotating component.

You can have your car serviced by other service outlets without affecting your warranty, but you need to make sure the servicing will be according to Mitsubishi’s recommendation.