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Trouble Code P0455

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Posted

I tried changing my gas cap, but this code reemerges once a week or so. Any suggestions? Should I try changing the Evap canister? Or should I just pony up the $600 to replace the whole pump assembly from IPD?

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48 answers to this question

Posted

A/C has nothing to do with it. You have an evap valve in the same place. If you have a hand vacuum pump, you can test the EVAP valve(canister purge valve) both connections should hold vacuum, if one doesn't then replace the valve.

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Posted

A/C has nothing to do with it.  You have an evap valve in the same place.  If you have a hand vacuum pump, you can test the EVAP valve(canister purge valve) both connections should hold vacuum, if one doesn't then replace the valve.

I figured the AC wouldnt affect it one way or another, the only reason i thought of it was that was the only thing i did differently that day.

The light went out this morning, so we'll see if if comes back on. Hope it was just a loose gas cap. If it comes back , i will do a vacume test.

thanks

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Posted

valve2.JPG

valve1.JPG

Does this look like the purge valve on a 1998 S70 T5? Because if so, the thing that I thought was the purge valve isn't it at all!

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Posted

That looks like the purge valve on a 1995, the one on the 1998 is square and the connections for the lines are not in and out like the one in the pic above but in then 90degrees is the other.

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Posted

Yeah, the one that I removed had the connections at 90 degree angles. But this one fit right in, connector connected. I can only assume it works.

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Posted

It's not the one for your car, so I don't know how long it will work or if it will work correctly. But it might don't know.

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Posted

It's not the one for your car, so I don't know how long it will work or if it will work correctly.  But it might don't know.

It's the one that FCPGroton sells tagged as "S70s 1998 Only."

It is radically different from the one I removed though. The old one didn't hold a vacuum going to the intake manifold.

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Posted

Sweet, the check engine light came back on. :D

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Posted

Sweet, the check engine light came back on.  :D

Did you replace the gas cap with a factory one like was originally suggested or are you still using the pep boys cap?

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Posted

Did you replace the gas cap with a factory one like was originally suggested or are you still using the pep boys cap?

Still using the generic gas cap, but I had it checked at an emissions station and it held vacuum just fine.... Should I still get an OEM cap? I don't know where my old one went...

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Posted

Still using the generic gas cap, but I had it checked at an emissions station and it held vacuum just fine.... Should I still get an OEM cap? I don't know where my old one went...

IIRC, there is someone that sells the OEM Volvo caps on eBay for like $15 or so. I think that could be part of the problem. If not, the only other thing would be a leaky or disconnected hose that actually goes into the canister or the valve.

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Posted

IIRC, there is someone that sells the OEM Volvo caps on eBay for like $15 or so. I think that could be part of the problem. If not, the only other thing would be a leaky or disconnected hose that actually goes into the canister or the valve.

My attempts to follow the vacuum lines coming out of this doohicky were unsuccesful. I have no idea where the canister is.

Maybe the valve I got just doesn't work for S70s? It's radically different than the one I took off.

valve3.JPG

valve4.JPG

That's the one I took off. Compare to the pictures of the new one I posted previously.

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Posted

The part number thats on your correct valve is the 8627005, thats what you need, that number superceeds to a 9125243, order that part number.

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Posted

The part number thats on your correct valve is the 8627005, thats what you need, that number superceeds to a 9125243, order that part number.

So howcome I have a 1998 model, and the fcpgroton site says "For 1998 S70s only?"

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Posted

Because the kind you are suppose to use depends on your emissions code.

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