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'98 A4 1.8T having surge problems ..... anyone ever had this......

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Old 09-17-2002, 12:50 PM
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Default '98 A4 1.8T having surge problems ..... anyone ever had this......
I've got a chipped(wett 1.0 bar) 1.8tqms with 77,000 miles. Lately I've started to notice when climbing hills in 5th or accelerating hard in 5th I feel this slight surging as the revs climb. It's a seat of the pants thing .... nothing shows on the tach like a slipping clutch or anything.

I have no other mods to the engine or exhaust, except for a K&N filter.

Anyone have any ideas?

Thanks in advance

mark
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Old 09-17-2002, 12:57 PM
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Is it only at WOT or partial throtlee or what
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Old 09-17-2002, 01:24 PM
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Default Best thing to do is to check out your bpv.
If it is leaking a bit it might open and close.
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Old 09-17-2002, 02:08 PM
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I agree
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Old 09-18-2002, 02:30 PM
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It's mostly on WOT or 90% plus
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Old 09-18-2002, 04:55 PM
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Bypass valve, broken vacuum line, some other boost leak, or try reading the spark plugs.....
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