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EA82T High Idle
Posted 08 January 2004 - 03:55 PM
I bought new wires, plugs, accel coil.
When putting the wires on I noticed that the AC unit was especially hot. The only thing I have replaced so far are the wires. Started it up and still high. Unplugged the AC wires at the compressor and no change in idle. I put the fan speed to 1 and then hit the off button for the vents. Idle went to about 1100. Hit any of the buttons and up it goes to about 1700. I removed the fuse inside the engine compartment and it does the same thing.
Conclusion: A signal is getting sent to the ECU making it think that the AC is on generating a load so it ups the idle.
Any other thoughts as to the cause?
How do I fix it?
Posted 08 January 2004 - 04:12 PM
Posted 08 January 2004 - 04:18 PM
Just a thought there. I'm not sure where the computer takes it's signal from to up the idle.
Posted 08 January 2004 - 04:41 PM
I think the micro switch for AC control is either stuck closed or jamed in some way to keep it in the closed position.
To check this micro switch look above the throttle pedal and in toward the HIVAC housing. There will be a black sheathed set of two blue wires. This runs to the control microswitch under a cover.
The other end terminates in a plug, you could disconnect it there for testing purposes.
If you feel this information is some help but can not locate the switch please feel free to email me.
I have pictures of said location.
I rewire this micro switch switch to a control switch beside the blower control. Yielding AC in any vent position.
Posted 09 January 2004 - 10:31 AM
I have disconnected the small plug to the micro-switch, yanked the AC fuse, disconnected the two plugs by the compressor.
I still have high idle unless the dash vents are Off.
Posted 09 January 2004 - 12:16 PM
There are two relays behind the pass strut under a cover.
The feed for the AAV is suppose to come off of the AC relay (beside it is the rad fad relay for turning on the rad fan when the AC is on.)
You could try unplugging the AC relay to see if it fixes the problem.
Posted 12 January 2004 - 04:09 PM
Thanks for all of the info Skip.
Posted 12 January 2004 - 04:13 PM
My car started doin that and it was the cable was sticking
wasnt returning to low idle
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