Idle Switch

[Michael Hopton]

I am having an going problem with the idle switch. The car keeps
throwing a 2121 idle switch code. I have replaced the switch and
used a multimeter to set its position on the throttle. But, every so
often I get a check engine light, followed by poor running until
I turn the engine off and on, and a 2121 code stored.

I was thinking of installing an LED across the terminals to monitor
its functioning, any BTFT?

Cheers, Mike


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