SOURCE: my air conditioning scroll cage
The noise is caused by a worn blower motor bearing, replace the blower motor and you will be good to go
SOURCE: nocking when cold then goes away (Proton coupe )
Thermostat has nothing to do with the nocking, and neither does oil pressure switch. You said noise goes away when it warms up. So i don't suspect oil pressure problem. But i would be checking the crack in rocker cover, something put that crack in it and i suspect one of your rockers maybe loose enought and hit it and cracked it hense nocking noise. Its cracked, it needs to come off anyway then you can check rockers to see if one or more are loose, and if it hit the rocker cover and put a crack in it.
SOURCE: Air suspension inactive, HDC inactive, ABS light on, Range Rover
Air Suspension Inactive usually means there is a problem with the Air Suspension. However, it will also come up when alternator or battery voltage is low, or when you reset (disconnect and then connect) the battery. To reset it manually: while in P(ark), turn steering wheel all the way left, hold few seconds, and then all the way right, hold few seconds. All the warning lights will go out. Most common failure is the passenger front air strut, since batteries are prone to leaking acid, it leaks right on top of the rubber airbag and burns through it. Dealer willcharge you one hour to diagnose, or you can easily diagnose this by looking at the ride height of each particular corner of the truck. If its sits low, or emits hissing sound when you park the truck, its leaking. If you keep driving with leaky air strut, you risk burning up the air compressor, as its working extra hard to compensate for the leak. Replacing the strut is easy 45min job even for a novice mechanic, and you can do it yourself. Strut can be found new for approx $750 online. If you are fed up with air suspension issues, there is a $700 kit that converts the truck to springs, and disables all of the air suspension. Look up Arnott Industires
SOURCE: I have a citroen picasso 20 hdi on a 53 plate .the
CV joint is dry! in the straight position it is not working but when turned, either way, it is working hard and if dry the balls stick and click.
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