Emissions
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Emissions
Replaced DPFE sensor and Vacuum solenoid. With vacuum hose removed from EGR valve, still have 3" vacuum on vacuum hose.
Is this correct, or should it be 0". Is new vacuum solenoid defective?
Engine pings, and engine light comes back on.
Tom
Is this correct, or should it be 0". Is new vacuum solenoid defective?
Engine pings, and engine light comes back on.
Tom
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Joined: Mar 2005
Posts: 1,533
Likes: 1
From: Dexter, MI
Take your truck to an auto parts store that offers free trouble code reading. Make note of the codes that appear and list them here. That will give us some information to help you solve the problem.
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Hooked up vacuum guage to line from EGR valve, at idle showed 3" vacuum, drove to 30 mph and it increased to 12" vacuum, at deceleration it dropped back to about 3". Took the selonoid back and got a new one.
This time it started out at 0-1" vacuum, increased to 12, then dropped back to 0-1". So far light is out, will post if it comes back on and get the code for check engine.
Thanks for any replies!
This time it started out at 0-1" vacuum, increased to 12, then dropped back to 0-1". So far light is out, will post if it comes back on and get the code for check engine.
Thanks for any replies!
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