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JohnJL JohnJL is offline
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Join Date: Jan 2005
Location: Toronto, Ontario
Posts: 4,767
Nice writeup.

I am setting up a MS2 now and tracking down a couple of issues. Some help would be great!

Did you use the standard VDO oil temp sensor? If so, what are your coolant sensor settings? I measured ohms across a wide range, and used 2490 as the bias resistor value but I get weird results. Temp pegs at -21 or 80 C with just minor changes to the various temp point values. I tried the pre-set "SAAB BOSCH" values and get the same results.

I am using a stock VDO 200 deg sensor mounted in the breather cover, leaving the stock sensor in the pressure line to signal the dash temp gauge. I have used this sensor and in this sensor location before on this exact motor with Adaptronic ECU so I know it works but its a settings or calibration issue I am having within Megasquirt. Unfortunately Adaptronic uses the coolant temp settings in ADC not in ohms so I cant copy/paste from the Adaptronic tables into the Megasquirt tables.

If you are using a stock temp sensor could you pls post your bias resistor value and the three temp/resistance points?

THanks!
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Old 03-11-2017, 08:32 AM
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