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Idle still riduculously high, here's what i've done. . .any ideas? 200 1987

posted by  Jessie on  Tue Sep 2 15:51 CST 2003
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last visit: Tue Jan 18 17:45 CST 2011
[RELATED]

I have not had to deal with the CIS on my 89 so my experience is limited. I am pretty sure there is only one coolant temp sensor for LH fuel injection (The Kjet system has 2 sensors). But they work the same. The sensors resistance drops as it heats up. When the engine is warm the resistance should be low (200 ohms approximately with reference to ground). Cold the resistance should be in the thousands.
I have tested my kjet system by disconnecting the temp sensor wire and grounding the wire. If the system is working the idle shoots way up when you unplug the sensor wire, and drops to warm idle with the wire grounded. I have not tried this on the LH system though so I would not recommend it. I wouldn't want to be responsable for you frying your LH unit.






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