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2006-2009 Range Rover MkIII / L322
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Discussion Starter #1
Awful noise after coolant drain & fill. What did I break?

You can hear the noise. The bubbles have stopped. Its cold outside -13C. Engine temp is stable at whatever 768mV is according to IIDTOOL.

1. Opened coolant fill cap. opened blood screw next to coolant cap. Opened the bleed screw near the engine/Throttle body.
2. Drained the fluid by opening the drain screw on the bottom.
3. Filled with coolant and the noise came on the moment I started the car.

The bubbles I assume is the air getting out of the system. It has stopped bubbling and overflowing. Coolant level is stable, all bleed screws are closed.

Noise is awful. I can't figure out what went wrong?

Help please.
 

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2006-2009 Range Rover MkIII / L322
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19 Posts
Discussion Starter #2
Re: Awful noise after coolant drain & fill. What did I break?

Update: My steering is messed up. If I turn the steering it jerky and makes a little more noise than it should! I tried to go for a drive but turning the steering a little feels bad.
 

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2006-2009 Range Rover MkIII / L322
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694 Posts
Re: Awful noise after coolant drain & fill. What did I break?

Did you remove any of the steering lines? Sounds like the system is low and aerated.
 

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2002-2005 Range Rover MkIII / L322
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Re: Awful noise after coolant drain & fill. What did I break?

thats a noise that a cold power steering pump makes.
I would also figure that you got coolant onto the belt so its slipping some,

I would get some soapy water and with the engine off rinse the belt off ,
yes use the hottest water you can so it has time to work before it freezes,
try to keep water from entering any shafts of the accessories ,
and the same for the idler bearings,
just clean the belt and pulley.
 

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2006-2009 Range Rover MkIII / L322
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Discussion Starter #5
Re: Awful noise after coolant drain & fill. What did I break?

I figured out what I did wrong. After draining the tank, I was going to bleed the entire system and was looking for the return hose. What I disconnected was the power steering fluid cooler line which happened to be the same color but different viscosity. I guess it did not drain completely. Now I need to fill it up with Pentosin hydraulic fluid and wait for the foam to go away and the pump to stabilize.

Hope I did not burn out the pump. it was on for a whole of 8 minutes and turned the steering only once.
 

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2002-2005 Range Rover MkIII / L322
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Re: Awful noise after coolant drain & fill. What did I break?

well you fooled me,
I would have never guessed you drained out the PS reservoir,

though it begs the question where are you draining the old fluid?
If to the ground then yes you might not notice this,
BUT oil and coolant dont mix
 

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2006-2009 Range Rover MkIII / L322
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19 Posts
Discussion Starter #7
Re: Awful noise after coolant drain & fill. What did I break?

Neither did I. I kept going through TOPIX to find out what the bottom driver side hoses were that I unplugged by mistake after opening the coolant drain plug. It drained orange just like the coolant. I just wanted to have renewed fluids in there but really no reason to have new fluid. Recommended change is 5 or 7years. I use mine off road a lot so I prefer to change fluids. It cheap since I do all maintenance myself.

I thought I had opened the transmission cooler line but the fluid in there was full when I checked. Just didn't think I let out some PS fluid. Thankfully Oriellys carries all RR compatible fluids by Pentosin.
 
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