As the title states, I just today noticed a slight drop in boost, particularly when getting close to WOT, and at about the same time, the ABS light came on. It went off when I restarted the car, and stayed off till I once again got close to WOT. Then it came back on. This, along with the drop in boost, makes me think that there must be a common vacuum line that is failing under high boost. Any thoughts on where the culprit might be ? I see a rather large vacuum line coming off of the intake, and then heading under the air cleaner box, but I lose it after that. Drop in boost isn't major, but noticeable.
Thanks all !
Edit: I'm thinking that the large vacuum line from the intake goes to the brake booster.
Drop in boost w/ ABS light
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scot850
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Based on what I understand you are describing, that sounds like the pipe to the booster. Runs under the airbox.
It does sound like a vacuum leak, and if it is setting off the ABS light then it is work following that line and checking both ends in particular for splits.
Neil
It does sound like a vacuum leak, and if it is setting off the ABS light then it is work following that line and checking both ends in particular for splits.
Neil
2006 V70 2.5T AWD Polestar tune
2000 V70 R - still being an endless PITA
2006 XC70 - Our son now has this and still parked in our garage
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L - Sold
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - Sold
2000 V70 R - still being an endless PITA
2006 XC70 - Our son now has this and still parked in our garage
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L - Sold
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - Sold
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