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Coolant Temperature Sensor not reading on MSPNP2

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Coolant Temperature Sensor not reading on MSPNP2

Old 04-10-2019, 01:22 AM
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Join Date: Oct 2017
Location: Houston,TX
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Default Coolant Temperature Sensor not reading on MSPNP2

Hello everyone, reached a stale mate with a problem I`ve been having. Car is a stock 96. I installed my MSPNP2, uploaded base maps, did some tuning to get it to run. The issue I`m having is that my megasquirt is not reading anything but 180F from my coolant temperature sensor (CLT).

1. Calibrated the sensor the way that it should be in tunerstudio from reading many forums on DIY, MT and M.Net. Using the RX7_CLT(S4 & S5), tried changing bias resistance to 2490,1550,1250,4890 Ohms.

2. Replaced the sensor with a new one from Oreily. Just in case.

3. Took a look see inside the MSPNP2 for the R7 resistor and nothing has been touched (Got the MS used) Although I gather that messing with resistors is for MS1?

4.Measured voltage at the temperature sensor connector and did not get a read...Figured it might be a settings issue with MS.

I am running the coolant fan on all the time so I don`t overheat. I`ve searched through many forums and did not see help with my current issue. Has anyone experienced something like this? Is there something I`m missing?
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