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Emissions

Tiny
DONALDADRIAN
  • MEMBER
  • 1998 DODGE TRUCK
  • V8
  • 2WD
  • AUTOMATIC
  • 164,000 MILES
I have a 98 dodge 1\2 ton pickup-what does the canister purge valve /solenoid do? It's making beeping noises.
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Monday, January 24th, 2011 AT 4:41 AM

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Tiny
DOCHAGERTY
  • MECHANIC
  • 9,601 POSTS
Is the check engine light on?
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Monday, January 24th, 2011 AT 5:10 AM
Tiny
CARADIODOC
  • MECHANIC
  • 33,754 POSTS
When it opens, stored fuel vapors are drawn in from the charcoal canister to be burned. This is a "duty cycle" valve meaning it turns on and off. The on-time vs. Off-time percentages change to vary the average amount of flow. If it's clicking, it's working.

There was a recall on them many years ago. The charcoal in the canister broke down and could work its way up the vacuum hose to that valve and plug it. The recall involved replacing both parts and blowing out the lines if charcoal was found in them. I performed about 50 of those recalls and never found a bad canister.

Caradiodoc
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Monday, January 24th, 2011 AT 5:25 AM

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