ta1972

iTrader: (1)

I am totally lost here from this issue. i have another 98 gs400 and swapped all the relays and checked them and still the same. I have also swapped the engine ecu if that was the case , but still on. I tried unplugging the fan switch on the radiator and still the same. What the hells going on with this car??? Is there a a/c control ecu that controls the radiator fan? I tried turning on and off on my a/c and still the same. Is there also a cooling fan ecu/module on these cars? I tried looking in the shop book, but can't find nothing. I really need some help here if someone had the same issues.
searching on this forum and people had simular issues, but it was the normal issue with fan switch or relay. In my case i'ts something very strange here and i can't seem to figure it out, So please help!!!

SC400slide

iTrader: (11)

https://www.clublexus.com/forums/gs-...-the-time.html

Could be coolant temp sensor

https://www.clublexus.com/forums/gs-...urn-off-2.html

^ I saw you posted on this and nobody replied. We usually don't answer to old threads. Make sure to do what he didn't in that thread, post what the problem was when solved, it help's everybody.

https://www.clublexus.com/forums/gs-...adiator-2.html

Here are more suggestions. Hope all of this information helps your dillema.

==> Remember, post issue when solved, if you can.
GL!

ta1972

iTrader: (1)

Thanks for the info! If the a/c refrigerant is low, would this make the fan constantly on? Or how about the a/c pressure switch if it's faulty? A few days ago when the fan was constantly on, I turned off the car and went up to my house for about an hour or so. I came back out and when i turned my car on the fan was off and came on like normal when it reached certain normal temp. When i was driving i turned on my a/c the fan came back on and stayed on even when the engine was off. So my question is, Can a/c pressure switch has something to do with this issues? Or low freon?

SC400slide

iTrader: (11)

The threads I gave you should have an answer to your questions...I have personally never had this issue, so I wouldn't know from experience...As people here n CL say, "do your diligence" and search it up!

GS4_Fiend

iTrader: (22)

temperature switch bad

ta1972

iTrader: (1)

It's not the temp switch. I think it's with the a/c pressure switch.