07 Hyundai Santa Fe - Replacing Fuel PCSV - Hyundai Forums : Hyundai Forum
 
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#1 Old 04-23-2012, 01:38 PM
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07 Hyundai Santa Fe - Replacing Fuel PCSV

hey everyone,

New member here. Have owned my santa fe for 3 years now and love it, absolutely no problems with it and give it good upkeep. However, I did some research and found that recently, when i fill up for gas, it wont start right away. I have to give it some gas and rev the engine a bit in order for it to stay idle. After a while, it works great and everytime after that I turn on/off the engine, it starts up perfectly every time.

I found on hyundai's tech info site that its the Purge Control Solenoid Valve that may need to be replaced OR its the gas cap. My first question, is there a way to prove if its the PCSV or the gas cap?

Secondly, how hard/easy is it to replace this valve in a DIY world? I can't seem to find any instructions on how to replace it but I can find diagrams of where its located.

Any help would be greatly appreciated!
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#2 Old 04-23-2012, 06:52 PM
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You can prove its a sticking PCSV by removing it and apply vacuum to the intake side of the valve. It shouldn't leak any vacuum. If it does, replace it. It if doesn't, I would apply 12 volts to the PCSV, and then test it again. Basically to see if it sticks.

As far as removal/replacement goes, it depends which engine you have.

2.7 DOHC V6 - Can be a bit of a pain. It's located just to the left (if facing from the FRONT of the vehicle) of the throttle plate, attached via a rubber hose to the intake manifold. Plan on replacing that hose if you remove it.

3.3 DOHC V6 - See, you can have your cake and eat it too! It's mounted on top of the intake manifold, slightly to the right (again, facing the FRONT on the vehicle) side of the engine. Should be as simple as take the engine cover off, and remove the valve (2 hose clamps, maybe the bracket bolt). Hoses usually stay in one piece, but if you feel you've damaged them, don't hesitate to replace.

If someone can post pics, you'll see how relatively easy the 3.3 valve is. REGARDLESS of engine, the valve is designed to flow one direction. Pay special attention to how it is installed prior to removal!
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#3 Old 04-26-2012, 10:46 PM
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birdman350
On a related note: Would a sticking or bad PCSV cause fluctuating RPM's and engine stalling when the engine is still cool?
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#4 Old 04-27-2012, 12:56 AM
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Given the vintage of your vehicle, MUCH more likely a bad TPS (throttle position sensor), a common thing with the '07 and '08 models.
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#5 Old 05-02-2012, 11:07 PM
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Good call on the TPS, Canderson! Apparently the new TPS installed is an updated part from original. Part number from work order: 35107-3C100-NFFF TH Sensor. Also performed ECM update.
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#6 Old 05-02-2012, 11:24 PM
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Not much of a call on my part. Pretty common issue. And yes, you will have received an updated part and reprogramming. That should straighten out your cold idle issues for good. Haven't ever heard this problem on the new part/code.
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