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My car has a code that says the runner control is stuck open, i switched motors on the imrc and it is still showing up. The car seems to run fine but idles a little rough. Any suggestions?
 

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Carbon buildup.
 

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1998 ZX2
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Remove the motor and see of you can manually move the shaft. Open and close it a few times then reinstall the motor.
 

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1998 ZX2
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10,070 Posts
Its supposed to close then you let off the gas and the RPM's drop.
 

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near the bootom of the spi runners there is a screw with a hex head it should be near the motor that controls the spi. it controls how much the secondary high speed ports are open all the time if you set it so that it is completely closed it should drop the code.

i have it slightly open on my escort with gives better low rpm power by better airflow, but it does throw the code
 
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