[Mason]

NOS2Go4Me,Feb 8 2007, 09:32 AM Wrote:It may just be "that cold" if the block heater is helping that much.

I notice there's an extra couple of cranks at least when starting our Focus at -20C with no block heater vs. -25C and below with the block heater on.

Actually, it's a little more disparate than that. With the heater on all night, it fires up almost instantly. There's a definite crank period with the car sitting cold all night.
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Yup. I was getting the exact same thing. I would of coarce get you batter tested and check for corrosion but if it looks good get the IAC checked.

When I used my block heater over night I also had no problems witch is why it took me so long to figure out.
The heater helps because the IAC is on the motor.