Quote:
Originally Posted by 911monty
Straight from the Bently manual, Low speed = coolant above 96.75C (206.2F) and High speed 102C (215.6 F) or A/C pressure switch closed (refrigerant pressure above 18 bar/232 psi).
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I got the manual and that's why I'm questioning my low fans not kicking in at 97C.
Rick, what is your info source with 102C as low fan activation temp?
With my manual switch, I'm turning low fans on at 95-97C when I hit traffic. I barely use AC as I drive top down most of time and prefer no extra drag on engine, so went for a 3-way switch. I also replaced OEM ballasts (supposedly 0.5 ohm) with 0.3 ohm/ 50w wirewound resisters so my lo speed should be somewhat faster than stock.
When I turn on AC, fans kick in at low speed so the circuit seems just fine, but somehow my DME does not trigger low fans at 97C.
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1997 Boxster arctic silver/ red, XNE riveted mahogany/ leather steering wheel & 917-style wood shift knob, Ben’s short shifter, PSE, 996 TB, UDP, stereo/ center console delete, hardtop and speedster humps, daily driver rain or shine or snow!
Last edited by Boxstard; 06-18-2017 at 11:10 AM.
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