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Occasional loss of boost, any ideas?

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Old 04-14-2003, 11:02 AM
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Default Occasional loss of boost, any ideas?

Occasionally, I won't be able to get more than 5 psi of boost. Normally, I see 16-17 psi spikes with my GIAC chip, but then all of a sudden its gone. I remember somebody saying a couple days ago that if the wastegate is stuck open, you wouldn't see more than 5 pounds of boost. It also seems that even when I am seeing normal levels of boost, my gauge boost gauge seems to pause at 5 psi for a split second before continuing on. Do you think that my turbo could be going, or do you think that it is something else.
Old 04-14-2003, 11:05 AM
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what kinda bpv you got on there?
Old 04-14-2003, 11:25 AM
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710N
Old 04-14-2003, 11:43 AM
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Default hrm, how long has it been on?

if it's torn or anything you may have problems - i know quite a few people have shredded through theirs in as few as 3k...
Old 04-14-2003, 11:51 AM
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Default I've had it on there for about five months.

I was thinking that it might be the BPV as well, but I thought that if it was bad, there would always be a problem. I can go a couple days without this happening once, but then it may happen once a day and only last for a couple miles.
Old 04-14-2003, 11:52 AM
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hrm, other than the BPV, the wastegate might be it - how many miles/km on the turbo?
Old 04-14-2003, 12:13 PM
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Default What year is the car?

You could be getting into a limp mode.
Old 04-14-2003, 12:28 PM
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I have about 50K miles on my car right now.
Old 04-14-2003, 12:29 PM
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My car is a 99.5
Old 04-14-2003, 12:45 PM
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Go over every hose. I'd bet you have a broken vac line someplace (if they are the original hoses)


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