Squeaky Engine

Minormatt · Mar 13th, 2018, 13:56

So my engine has a rattely squeaky noise... its had it since I got it. Not audible when inside the car.

Its only evident with a cold engine. The noise appears to either be from the alternator or PAS pump. I sprayed some deicer on the belt this morning and it stopped for a second, then a juddery knocking noise, shut up for 10 seconds and then came back.

The alternator pulley has been replaced in the past, but its my prime suspect at the moment. Is it possible to test it in situ in any way? Other suggestions welcome...

Minormatt · Mar 13th, 2018, 13:57

Sorry I'm a plonker.... 2005 Euro 3 V70 D5

OWF · Mar 13th, 2018, 15:07

If you sprayed some deicer on the belt and the noise went away briefly, I would suggest it could be time to replace the belt.

reggit · Mar 13th, 2018, 18:11

Did you change the belt when you did the head?

My engine was making hell of a racket, turned out to be mainly the alt pulley - although it was working properly it was dog rough, I only fully tested it when I’d taken it off. Mine was original I thing with 141,000 miles on it. Also had an older or tensioner (can’t remember which) developing a rough spot which was probably contributing to the noise.

Minormatt · Mar 13th, 2018, 18:18

No I didn't do the aux belt at the same time as the cambelt... I did it in January with idler and tensioner (genuine)

reggit · Mar 13th, 2018, 19:17

Just a thought, have you checked around with a screwdriver type stethoscope? I also had my power steering pump making hell of a racket (squeak/rattle rather than the usual groaning). Changed it for a used one last year.

Minormatt · Mar 14th, 2018, 08:53

No, not yet. Unfortunately on the road, staying in hotels etc at the moment so haven't had a chance!

Mar 13th, 2018, 13:56	#1
Minormatt Member Last Online: Oct 22nd, 2022 13:41 Join Date: Feb 2017 Location: Hereford	Squeaky Engine So my engine has a rattely squeaky noise... its had it since I got it. Not audible when inside the car. Its only evident with a cold engine. The noise appears to either be from the alternator or PAS pump. I sprayed some deicer on the belt this morning and it stopped for a second, then a juddery knocking noise, shut up for 10 seconds and then came back. The alternator pulley has been replaced in the past, but its my prime suspect at the moment. Is it possible to test it in situ in any way? Other suggestions welcome...

Mar 13th, 2018, 18:11	#4
reggit Premier Member Last Online: Yesterday 16:49 Join Date: Feb 2012 Location: Preston	Did you change the belt when you did the head? My engine was making hell of a racket, turned out to be mainly the alt pulley - although it was working properly it was dog rough, I only fully tested it when I’d taken it off. Mine was original I thing with 141,000 miles on it. Also had an older or tensioner (can’t remember which) developing a rough spot which was probably contributing to the noise. __________________ 2009 Volvo V70 D5 (Polestar 225bhp) r-design 180,000 miles

Mar 13th, 2018, 19:17	#6
reggit Premier Member Last Online: Yesterday 16:49 Join Date: Feb 2012 Location: Preston	Just a thought, have you checked around with a screwdriver type stethoscope? I also had my power steering pump making hell of a racket (squeak/rattle rather than the usual groaning). Changed it for a used one last year. __________________ 2009 Volvo V70 D5 (Polestar 225bhp) r-design 180,000 miles Last edited by reggit; Mar 13th, 2018 at 19:22.

Mar 13th, 2018, 13:57	#2
Minormatt Member Last Online: Oct 22nd, 2022 13:41 Join Date: Feb 2017 Location: Hereford	Sorry I'm a plonker.... 2005 Euro 3 V70 D5

Mar 13th, 2018, 15:07	#3
OWF Junior Member Last Online: Aug 3rd, 2023 08:50 Join Date: Mar 2017 Location: Bath	If you sprayed some deicer on the belt and the noise went away briefly, I would suggest it could be time to replace the belt.

Mar 13th, 2018, 18:18	#5
Minormatt Member Last Online: Oct 22nd, 2022 13:41 Join Date: Feb 2017 Location: Hereford	No I didn't do the aux belt at the same time as the cambelt... I did it in January with idler and tensioner (genuine)

Mar 14th, 2018, 08:53	#7
Minormatt Member Last Online: Oct 22nd, 2022 13:41 Join Date: Feb 2017 Location: Hereford	No, not yet. Unfortunately on the road, staying in hotels etc at the moment so haven't had a chance!

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