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SOLVED - Engine coolant temp sensor 700 1990

posted by  john sargent on  Sat Aug 17 08:06 CST 2013
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last visit: Wed Oct 22 09:07 CST 2014
[RELATED]

LH 2.2 and LH 2.4 use different Engine Coolant Temperature sensors.

Yes, LH 2.4 has two thermistors, one for the ECU (fuel computer), and one for the EZK (ignition computer). They internally grounded.

LH 2.2 has one thermistor (for the fuel computer), externally grounded on the intake manifold.

You had a sensor for LH 2.2 installed on LH 2.4. That doesn't work, but an LH 2.4 sensor does work on LH 2.2
--
john






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