[Supras] A/C booster fans

[Hacker J]

I would start by checking your rad cap.  There are two types.  For VINs below 0104940 the cap has
greater depth and is 16401-63010, after that date (around 89) Toyota went to a smaller cap that is
16401-72090.  If you replace you rad with an aftermarket they all seem to use the older cap style.
Toyota will give you the cap that fits the original radiator, so you will most likely get the
wrong one if your VIN is post 0104940 and you have an aftermarket rad. 

Its easy to check, just squeeze the top hose.  If coolant squirts into the overflow bottle you
have the wrong cap.

Jon
90T

> > 
> > On 8/1/06, Eric Boeck wrote: 
> > > Hey Guys, 
> > > 
> > > Are those two little electric fans thermostatically controlled? And do they 
> > > run if the engine is hot but turned off? I ask b/c with this heat wave 
> > > going thru here, yesterday when I used the A/C (retro'd to 134a), then 
> > > turned off the car and came back 10 min later, the rad was boiling. 
> > > Literally boiling and just a-bubblin vapour out the overflow!!!! Rad < 
> > > 10kkm, new cap, engine temp was normal. All I can think is that heat built 
> > > up between the condensor and rad, and caused it to boil the fluid. 
> > > 
> > > Noooo, it's not a BHG. Checked that a little while back (sniffer). And 
> > > there is NO way you'd get this much bubbling with a BHG. I mean a roiling 
> > > boil!!! 
> > > 
> > > Anyway, anyone retrofit a temp sensor to keep the fans on if the temp behind 
> > > / between the rad was over a certain amount? Thinking I might need to do 
> > > that. Set it for say, 80 deg C, and use a relay to keep those fans on until 
> > > it drops below that. 
> > > 
> > > LMK 
> > > 
> > > Eric 
> > > 91T 
> > > _______________________________________________ 
> > > Supras mailing list 
> > > Supras at supras.com 
> > > http://supras.com/mailman/listinfo/supras_supras.com 
> > > 
> > 


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