Emcclarrio

All,

I am pulling my hair out with this, I have had my GS430 for 3 years and it has a issue which I cannot resolve.

When the outside temp hits about 25c, I have over heating issues with the aircon on, I never let it go anywhere near the red, I just turn off the aircon.

I have drained the Radiator, burped it with the heating on so the cooling should be ok, but it still gets hot.

The fans kick in, but they seem to not go into turbo mode then just stick at one speed, I am sure this is fine as the GS430 doesn't not have different speeds?

One final point the aircon could do with a re-gas as it does take it time to cool and the aircon rad is missing loads of the vertical fins, so it is not perfect and the surface area has reduced, but it should not cause overheat.

HELP!!!! the heat is killing me

STREETGS

this might help

https://www.clublexus.com/forums/gs-...ated-help.html

Emcclarrio

thanks, but I have done the burping/bleeding of the system and I am sure I don't have a leak?

GSTim

iTrader: (1)

Check and see both fans are working? It sounds like a cooling issue with a/c on. Check for blockage of the condensor/radiator?

lextout

Change from least to big,

Thermostat, radiator,ac relay switch,thats all i can think of for now, also what gstim said, hope you find the culprit.

Emcclarrio

Changed the thermostat, the old one was not in good shape, thought I had sorted it, it will now sit in park and you can run the aircon and it will be ok, before it would over heat with in 5 to 10mins when hot. but once I started to drive round town under load with little air, it started climbing again, but the climb was not as harsh, I thought I had some air in it, so spent a lot of time burping it, there was some air not much.

so I took the rad top clips of and parted the rad from the Aircon condenser, well we seemed to have a great deal of green stuff and as I looked closer it looked blocked, it seems the Aircon condenser has been breaking spilling all the little bits of Alloy in to the rad, I have cleaned a lot of it out, but it has damaged the fins, but on the plus point it did not overheat after that.

but could do with a new Rad