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S40 / V40 '96-'04 General Forum for the Volvo S40 and V40 (Classic) Series from 1995-2004. |
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Buzz at 2500/3000pm, and no powerViews : 424 Replies : 5Users Viewing This Thread : |
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Feb 10th, 2019, 10:33 | #1 |
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Last Online: Jul 30th, 2019 21:35
Join Date: Jan 2015
Location: Ipswich
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Buzz at 2500/3000pm, and no power
Hi everyone, 2001 V40 1.8 Auto
Suffering from lack of power generally. When trying to climb up a steep hill at 25-35mph, the engine really struggles. Opening the throttle just adds noise, and a loud buzzing is evident between 2500 and 3000 rpm. More throttle just makes the buzzing incrementally louder. Slowly coming on and off the throttle just adjusts the volume of the buzz! Engine has done 61k, and in other respects in fine. Has had cambelt and VVT pulley done previously. There's no VVT tick tick burr, so that's not the issue. There's no problem with the PCV, tested that today. Pressure at the oil filler is fluttery at idle, but there's negative pressure when lightly revved. Thoughts? |
Feb 11th, 2019, 12:32 | #3 |
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Last Online: Jul 30th, 2019 21:35
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Location: Ipswich
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Feb 13th, 2019, 18:00 | #4 |
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Last Online: Jul 30th, 2019 21:35
Join Date: Jan 2015
Location: Ipswich
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Anyone agree or disagree?
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Feb 15th, 2019, 21:41 | #5 |
Premier Member
Last Online: Apr 13th, 2022 09:41
Join Date: Jul 2014
Location: Beccles
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I'd chuck a set of new plugs in just to rule it out, plus it's a cheap fix if it does solve it.
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Feb 17th, 2019, 11:46 | #6 |
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Last Online: Jan 25th, 2021 18:49
Join Date: Jun 2018
Location: Bangor
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Maybe scan it and see if any fault codes.
Could be low fuel pressure,or autobox not kicking down. |
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