Over the past six months, I have slowly been losing vacuum at idle. At first it was 18, now it is down to 15. While driving with my foot off of the gas I get about 20-22. Does anyone have any ideas what the cause of this may be? This is on the 850 by the way. Thank you.
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Losing Vacuum Over Last 6 Months
Started by TSWisla, Mar 31 2006 02:58 PM
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#1
TSWisla
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Posted 31 March 2006 - 02:58 PM
1998 S70 GLT 140K
#2
lax01
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Posted 31 March 2006 - 10:34 PM
QUOTE(TSWisla @ Mar 31 2006, 09:58 AM) 
Over the past six months, I have slowly been losing vacuum at idle. At first it was 18, now it is down to 15. While driving with my foot off of the gas I get about 20-22. Does anyone have any ideas what the cause of this may be? This is on the 850 by the way. Thank you.
Atmosphere pressure change?
2002 BMW M3
Past: 1995 Volvo 850 Turbo
Past: 1995 Volvo 850 Turbo
#3
the underlørd
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Pretty Boy Racing
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Posted 31 March 2006 - 10:44 PM
you have a leak?
2007.5 Chevy Duramax. Built Tranny. EfiLive. Twin Turbo. 600whp / 1000 ft lbs.
#4
TSWisla
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Posted 01 April 2006 - 03:05 AM
I look at all of the lines that I replaced when doing my PCV and the connections all look good. Near the front of the bay, there are vacuum lines connected to round [things?] with electric connections to them, what are these things for, could it be part of the problem?
1998 S70 GLT 140K
#5
850T_red
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Posted 02 April 2006 - 01:00 AM
QUOTE(TSWisla @ Mar 31 2006, 09:05 PM)
I look at all of the lines that I replaced when doing my PCV and the connections all look good. Near the front of the bay, there are vacuum lines connected to round [things?] with electric connections to them, what are these things for, could it be part of the problem?
Are you talking about the EVAP valve? EVAP valve is connected one end to intake manifold and the other to canister, and it has an electrical connector. Sometimes it goes bad, you'd get a code 315 though. Do a search on that and see if that's your problem.
1995 850T
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