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evap purge valve

 
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Old 06-04-2012, 07:47 PM
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evap purge valve

hey guys i have a 98 lude with a idle problem. when the engine is at operating temp is has a bouncing idle, i can hear a ticking noise coming from my evap purge valve. when i disconnect the wiring harness going to the valve the idle stays constant, does this mean my valve is bad? i haven't been able to find out to much information on these valves so if someone could help me out it would be great, thanks!
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Old 06-05-2012, 02:51 AM
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Re: evap purge valve

Mine is completely gone and didn't change my idle the slightest.
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Old 06-06-2012, 01:05 AM
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Re: evap purge valve

hows your mileage? cause when i leave mine disconected i get about 17
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Old 06-06-2012, 02:09 PM
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Re: evap purge valve

From everything I've read the evap just takes the gas fumes and puts them into the intake when you start up the car. making it easier and cleaner instead of just venting the fumes the the atmosphere. It shouldn't affect fuel economy, just emissions.
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Old 09-10-2012, 07:08 PM
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Re: evap purge valve

^^^Exactly
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