Volvo RWD 200 Forum

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Fault Code 1.2.3 1989 240DL LH 2.4 200 1989

1989 240 120k miles.I am getting the code for the coolant temp sensor. The car is very hard starting in the morning and today it won't go. The plugs, wires, cap and rotor are new, FP relay works. White label ECU. The wire to the sensor looks good, Unplugged it and cleaned the contact.
Any input would be great.
Thanks, Phil








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Fault Code 1.2.3 1989 240DL LH 2.4 200 1989

https://www.brickboard.com/FAQ/700-900/EngineSensors.htm#DiagnosingECTFailures
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Fault Code 1.2.3 1989 240DL LH 2.4 200 1989

This chart correlates the voltage with temperature/resistance.


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Art Benstein near Baltimore

Reassembly is the reverse of disassembly. Except the profanity. You don't take that back; you just keep adding to it.







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