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#1
03-07-2012, 10:09 PM
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P0446/P0507 blazer
I have a 1998 blazer 4x4
I had a issues with the car before and I had to turn the idle screw up until I fixed my problem. I now fixed my problem and I need to know what my idle rpm should be at. After I fixed the original problem after about a day of driving I had a P0507 Idle speed High/Low. I turned the set screw down and lowered my rpm. After about 5min of driving the code went away on its own. About 1 week later I am now getting the P0507 again and now it has a buddy. P0446 Evap System. Questions what would my idle rpm be? can the high rpm cause the EVAP code as well. 
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#2
03-07-2012, 10:26 PM
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Re: P0446/P0507 blazer
For the P0507, the procedure requires the use of a bi-directional scan tool.
The P0446 is a problem with the EVAP vent solenoid or its circuit. The high idle is not causing it.
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