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1998 S70 P0505, throttle body adjustment needed Topic is solved

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.

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shaker_chi
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1998 S70 P0505, throttle body adjustment needed  Topic is solved

Post by shaker_chi » Sun Nov 06, 2016 8:43 pm

I was getting the dreaded p0455 code last week and replaced most of the hoses and the purge valve. Of course, I have driven my 98 S70 T5 about 150 miles since my repairs and now code, but now I have a pending p0505. The car idles very steady at 900 rpms and I don't hear any loping. I sprayed around the engine (vacuum tree, intake pipe, etc.) with some carb cleaner and didn't see any noticable change in idle. Any suggestions as usual are very much appreciated.

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abscate
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Re: P0505

Post by abscate » Mon Nov 07, 2016 10:14 am

Thats an Idle Air control valve problem on a pre-1999.

When was that last cleaned?
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shaker_chi
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Joined: Mon Jun 29, 2009 2:17 pm
Year and Model: 94 850, 98 S70T5 M
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Re: P0505

Post by shaker_chi » Mon Nov 07, 2016 11:57 am

Cleaned it out when I did the PCV about 2 years ago. Will knock it out tonight and see what happens. Thanks Abscate.

shaker_chi
Posts: 400
Joined: Mon Jun 29, 2009 2:17 pm
Year and Model: 94 850, 98 S70T5 M
Location: Chicago
Has thanked: 3 times
Been thanked: 3 times
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Re: P0505

Post by shaker_chi » Tue Nov 15, 2016 9:52 pm

Just a follow up on my P0505 issue. I took out the air idle control valve and cleaned it out. Reset the ecu and got the P0505 after about 10 miles. I sprayed carb cleaner everywhere with no luck. Turns out the throttle body wasn't shutting completely. Adjusted the screw a bit and now I'm good to go. Drove it about 50 miles yesterday with no codes.

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