VY Overheating Problem

[1LOWVX]

Hi Guys all new to this but my mum is having serious overheating problems i have bleed the system after flushing it and the overflow bottle as well with good quality coolant.
But today when i have the info on the dash the temp got to 98 then i turned the ac on and it droped but the thermo fan kicked in when i switched it on and when i turned off the ac the thermo switched off. But the most confusing thing is when you turn the car off it drops up to 5ltrs of water, so i would love some help to work this puzzle out
Cheers

[andyman]

98 is good, thermos kick on at 105 without the a/c on,


when you say it drops water, is it clear or is it coolant, a/c will drip water as part of normal operation

[1LOWVX]

theres no coolant just the rusty looking water
thanxs andyman for your help
Cheers

[VR38]

Have you overfilled the recovery reservoir?

Is the radiator cap seated properly?

[VR38]

theres no coolant just the rusty looking water
thanxs andyman for your help
Cheers

Hold on, you flushed the system yet RUSTY WATER is still coming out???

[1LOWVX]

They were the first things i checked and i replaced the radiator cap
Cheers

[alien]

If you keep the AC off and keep watch on the exact temperature the instrument cluster tells you does it drop after reaching 95-98 degrees [temp should go right up to that mark and THEN drop not variate before]? Or does it head up to 110 (if you get that high switch it off then)?

If it drops when it reaches the 98ish mark then your thermostat is working fine, however you probably arn't using good enough coolant or there is something stuffed.

If it hits 110, sounds like your thermostat has "failed shut". Not allowing coolant to flow through, or very little.