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1998 s70 GLT p0455 assistance

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
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ShadyMilkMan
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1998 s70 GLT p0455 assistance

Post by ShadyMilkMan » Fri Mar 06, 2020 5:44 pm

Hey everyone,

Coop from Cali here, first post on this forum. Thanks for having such a kickass resource for Volvo owners! I've been lurking for a few days reading posts and solving the things that I could find relevant topics for, but I need some help. I am an old school Nissan / Datsun mechanic, been building s13s and s14s for years, but I was recently gifted this beauty of a 1998 Volvo S70 GLT. She's auto, red, and has 194k on the clock. Still RIPS hard enough around corners to chirp the tires and I reckon that suits me just fine for right now.

Like I said, I have been searching for this already, so please understand that I know forum rules from way back, and I hammered that search button plenty before asking you guys and gals for help :)

This car has two codes, p0455 and p0410. I'm not interested in the 410 code right now. My main concern is getting this evap system fixed so I can smog this aging Swedish nymp (her name was Helga from day one) and sell her as quickly as possible. It's a flipper for me, but I have the good sense to fix her first. That would just be rude.

So, I am a little confused on the difference between the evap charcoal canister, where I have learned there is a J hose and L hose, and an evap purge valve, which I hear is quite a known issue on these cars. Is there anyone who wouldn't mind giving me a hand with this thing for a few minutes and point me in the right direction? I cannot seem to find pictures on this forum of the 98 evap system, only the 99. I hear they are different.

Thanks in advance!

-Coop

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abscate
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abscate

Re: 1998 s70 GLT p0455 assistance

Post by abscate » Sat Mar 07, 2020 4:25 am

Hello Coop

The 1998 is a transition year and some have the evap canister and shut off valve in the driver fender well, you have to remove the plastic rivets to access, and some use the later style which is near the rear passenger side wheel.
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Re: 1998 s70 GLT p0455 assistance

Post by jreed » Sat Mar 07, 2020 5:53 am

If the shut off valve is located in the fender well on your car, this post from a while back might be of interest. It shows one way to open the fender well and replace the hoses:
viewtopic.php?t=27538&start=28#p493518
1997 855 GLT (Light Pressure Turbo) still going strong. Previous: 1986 240 GL rusted out in '06, 1985 Saab 900T rusted out in '95, 1975 Saab 99 rusted out in '95, 1973 Saab 99 rusted out in '94

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Re: 1998 s70 GLT p0455 assistance

Post by ShadyMilkMan » Sun Mar 08, 2020 1:06 pm

Yo Abscate and Jreed, thanks a lot fellas! I appreciate the help.

Turns out this vehicle has the canister inside the driver's side fender well. Those little rivets are a piece of cake to pop off, eh? lol.

I went nuts and am going to replace every single vacuum and emissions hose I can find. Again, thanks guys.

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jreed

Re: 1998 s70 GLT p0455 assistance

Post by jreed » Sun Mar 08, 2020 2:53 pm

Good luck. It's not too bad of a job. I bought lengths of silicone tubing in 6, 8 and 10 mm inner diameters and that was a great help to have on hand to run new lines.
1997 855 GLT (Light Pressure Turbo) still going strong. Previous: 1986 240 GL rusted out in '06, 1985 Saab 900T rusted out in '95, 1975 Saab 99 rusted out in '95, 1973 Saab 99 rusted out in '94

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Re: 1998 s70 GLT p0455 assistance

Post by ShadyMilkMan » Wed Mar 11, 2020 10:07 pm

Today I removed the PCV canister and found this:
20200311_210110.jpg
20200311_210101.jpg
20200311_210105.jpg
20200311_210142.jpg

From all the horror stories I've read, this seems like pretty normal buildup. Maybe a little heavy? Have no frame of reference.

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Re: 1998 s70 GLT p0455 assistance

Post by ShadyMilkMan » Wed Mar 11, 2020 10:15 pm

This, on the other hand, is the bottom port from PCV canister to engine block. That looks nasty. I'm assuming that emulsified oil should not be going into my oil pan, right?
20200311_211242.jpg

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Re: 1998 s70 GLT p0455 assistance

Post by Eddystone » Thu Mar 12, 2020 2:27 pm

Just a little advice, and your mileage may vary. I had the evap emissions leak fault in my 1998 V70 non-turbo which is configured like yours. Long story short: I replaced several suspect hoses each time thinking it was fixed, but no. I just finally replaced the servo up on the radiator that opens to allow the vapors to be sucked into the intake manifold. That fixed it. Takes about 30 seconds to do.

Along the way, I replaced the little hose back near the gas tank up above the fuel filter. This is the little 2-1/2" black rubber hose with a different diameter on each end (I think an $8 part from FCP)and it was very dry and somewhat crumbly but in fact not really leaking air or broken. Next, I replaced the long black hose under the left front fender which previous owner had replaced with vinyl hose. (And by the way, if the hose you use for this is TOO lightweight, the vacuum may collapse it and cause a kink along a bend. I used fairly beefy fuel line hose. My canister was fine. The hoses going forward from the canister were fine. The hose going all the way back to the gas tank were fine.

Finally, I sprung for the solenoid (maybe $50) swapped it in less than a minute, and that solved it. Personally, I wouldn't have suspected that part and was sure it was a bad hose somewhere, but I could have saved a LOT of troubleshooting by doing that part first. On the other hand, I did some preventive maintenance by replacing hoses.

Regarding the PCV system on your car, that's about the worst I have seen online or in the three I have done. That stuff just needs to be replaced, and people on this forum will consistently tell you to use OEM Volvo for that box. Some of the oddball hoses can be fabricated fairly easily. In my 98 and 99, there were a LOT of vacuum and pcv hoses that were old, dried up, inflexible and in need of replacement.

Once you catch up on all of the "deferred maintenance" on these old cars, they run very well and are very reliable.

I don't have a "normal" turbo, but on my 1999 T5 Turbo, there is a banjo bolt with a little orifice that was completely clogged with really hard oil residue. Your turbo may not have this part, but don't take anything for granted when it comes to that crappy oil residue clogging things.
1998 V70 Non-Turbo/Auto
1993 945 Turbo/Auto
1999 S70 T5 Turbo/Auto
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PM me if you are near Philadelphia.
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Re: 1998 s70 GLT p0455 assistance

Post by Richard99 » Thu Mar 12, 2020 4:24 pm

Eddystone wrote:
Thu Mar 12, 2020 2:27 pm
Just a little advice, and your mileage may vary. I had the evap emissions leak fault in my 1998 V70 non-turbo which is configured like yours. Long story short: I replaced several suspect hoses each time thinking it was fixed, but no. I just finally replaced the servo up on the radiator that opens to allow the vapors to be sucked into the intake manifold. That fixed it. Takes about 30 seconds to do.

Along the way, I replaced the little hose back near the gas tank up above the fuel filter. This is the little 2-1/2" black rubber hose with a different diameter on each end (I think an $8 part from FCP)and it was very dry and somewhat crumbly but in fact not really leaking air or broken. Next, I replaced the long black hose under the left front fender which previous owner had replaced with vinyl hose. (And by the way, if the hose you use for this is TOO lightweight, the vacuum may collapse it and cause a kink along a bend. I used fairly beefy fuel line hose. My canister was fine. The hoses going forward from the canister were fine. The hose going all the way back to the gas tank were fine.

Finally, I sprung for the solenoid (maybe $50) swapped it in less than a minute, and that solved it. Personally, I wouldn't have suspected that part and was sure it was a bad hose somewhere, but I could have saved a LOT of troubleshooting by doing that part first. On the other hand, I did some preventive maintenance by replacing hoses.

Regarding the PCV system on your car, that's about the worst I have seen online or in the three I have done. That stuff just needs to be replaced, and people on this forum will consistently tell you to use OEM Volvo for that box. Some of the oddball hoses can be fabricated fairly easily. In my 98 and 99, there were a LOT of vacuum and pcv hoses that were old, dried up, inflexible and in need of replacement.

Once you catch up on all of the "deferred maintenance" on these old cars, they run very well and are very reliable.

I don't have a "normal" turbo, but on my 1999 T5 Turbo, there is a banjo bolt with a little orifice that was completely clogged with really hard oil residue. Your turbo may not have this part, but don't take anything for granted when it comes to that crappy oil residue clogging things.
Wise. I also had a P0455 that was fixed by replacing the purge valve on a 1998 V70. They can be checked by blowing through the stem. You shouldn't normally be able to. When voltage (9V battery for test) is applied to the correct terminals, the valve opens up and can be blown though. This isn't a perfect test, though, since the valve can often fail once hot/during operation, or intermittently. Since it's a fairly cheap part, you may just want to replace it anyway if you are going to the trouble of replacing all the tubing.

Eric
Eric

1998 Volvo V70
2000 Volvo V70XC

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Eddystone

Re: 1998 s70 GLT p0455 assistance

Post by Eddystone » Thu Mar 12, 2020 4:51 pm

Eric,

I suspect that the purge valve is normally closed and only opens under certain conditions that the computer senses. Then it sucks the vapors into the engine. My bad valve could not be blown through, but I didn't do the research to figure out which pins would power it open. I believe it's just essentially a solenoid with a coil that just eventually opens up electrically leaving the valve in its closed position. I, of course (who wouldn't?) put my mouth on it and tried to blow through it both ways. ;-)

Glen
1998 V70 Non-Turbo/Auto
1993 945 Turbo/Auto
1999 S70 T5 Turbo/Auto
All U.S. market models.
All on the road and running.
PM me if you are near Philadelphia.
;-)

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