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Engine light lit ... pvc valve issue? - 2008 Chevrolet Suburban

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REMOVE PVC VALVE WITH VACUUM HOSE STILL ATTACHED CHECK FOR VACUUM AT PVC VALVE PLACING FINGER OVER IT.IF NO VACUUM FROM PVC VALVE BUT THE HOSE TO PVC VALVE HAS VACUUM REPLACE PVC VALVE.IF NO VACUUM GETTING THROUGH PVC HOSE AND VALVE.LOOK FOR DISCONNECTED BROKEN VACUUM HOSE OR OBSTRUCTION IN VACUUM HOSE BLOCKING OFF VACUUM.

Posted on Aug 05, 2010

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SOURCE: engine light is on

The engine light could be on for a multitude of reasons. Your best bet is to find a garage that will hook it up to the computer (many do this free of charge) where they can get the code, look it up and find out the cause. I had an uncommon code come up for my car (the light was on when I bought it) that the garage did not know but after running an online search of the code, I found out it was a fan fuse under the hood! The 1st code that came up was for a filter that needed changing and then the light came on again and it was the unknown code. Don't try and guess, it could be almost anything.

Posted on Feb 28, 2009

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SOURCE: engine light stays on all the time shops says its

Make sure your gas cap is tight this will cause the light to come on this is a very common problem
The PVC vale is usually on top of the engine

Posted on Mar 13, 2009

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2007 Hyundai Accent SE 1.6L Flashing check engine light and no power. Automatic transmission, car doesn't want to shift.


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All Ford 5.0l engines


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How can I identifies the PCV valve in the motor, where is ti??? and how can I chenge it???


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Where is the PVC valve? Standing in Front of the car it is on the left side of the air plenum. Unscrew the oil filler tube and remove the plastic engine cover. There is a sensor on the left side of the plenum. This sensor senses when the PVC valve is open/closed. Don't bother disconnecting the connector or the piece the connector plugs into. Simply twist the whole plastic assembly clockwise = yes clockwise while pressing downward to release the assembly. There is a spring underneath so don't let it pop up. With the assembly out of the way grab the PVC valve with a pair of needle nose pliers, wriggle the valve out. If the o-ring is ok put it on the new PVC valve. Drop the valve in place making sure it seats on the o-ring. Look at the bottom of the assembly to see how the slots line up with the tabs. Slip the slots down over the tabs compressing the spring and twist counter-clockwise. Replace the plastic engine cover, Done!

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Code P1491 is not the PVC Valve.It is the Vacuum Cut Valve Bypass Valve.
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Hello, My Monte Carlo will not stay running. I


Its called a pcv valve (positive crankcase valve) what year monte? The valve is for emissions you wont damage the engine but you will notice it idles higher and goes through more gas. you really need to get to the route of the problem. look for broken vaccum lines, engine light( is it on while car is running) the more you can find out the better you'll do getting to the bottom of it.

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1 Answer

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The PVC valve is located in the valve cover (top "cover" of the engine, near the oil filler cap) On DOHCs, it is immediatly to the right. On SOHCs, it a few inches to the left.The PVC valve is held to the valve cover with a rubber grommet type seat.

1. Remove the hose that connectes the throttle body unit to the PVC valve.
2. Using your hands, remove the PVC valve from the rubber seat. Wiggle it back and forth, then pull it straight out.
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Engine light stays on all the time shops says its the pvc valve where is the pvc valve located


Make sure your gas cap is tight this will cause the light to come on this is a very common problem
The PVC vale is usually on top of the engine

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