91 LS400 Cooling Fan Problem
#1
Driver School Candidate
Thread Starter
91 LS400 Cooling Fan Problem
My coolant temp started rising (I'm in Fl, A.C. is on) and stopped and found out that cooling fans not working.
Having some knowledge but no diagnostic tools, replaced all 3 cooling fan relays behind the drivers headlamp.
Bingo, fans started working - thought it was such a good day - fixed on first try.
2 days later, fans quit again. So something is burning out one of the relays.
Any suggestions please on how to locate the actual problem? Maybe a fan motor dying or shorting out???
Thanks for looking at this thread!
/Don
Having some knowledge but no diagnostic tools, replaced all 3 cooling fan relays behind the drivers headlamp.
Bingo, fans started working - thought it was such a good day - fixed on first try.
2 days later, fans quit again. So something is burning out one of the relays.
Any suggestions please on how to locate the actual problem? Maybe a fan motor dying or shorting out???
Thanks for looking at this thread!
/Don
#5
Driver School Candidate
Thread Starter
Hi Dicer - the temp gauge on my dash is working perfectly - would that be form the same sensor, or does the one on bottom of radiator just go for the fan control?
Thank you for checking!!!
/Don
#7
did your electric aux fan worked? what did you replaced?
i’m working on a ls400 96 project mine not working (sometimes it dose when i turn on auto mode) just wondering under what condition should it works
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