Engine: B5244: - getting noisy- what options do i have? - Page 2

oragex · Sep 21st, 2017, 19:40

Aftermarket water pumps are ticking bombs on this car. Aisin is about the only choice. Several people had their low cost pumps fail in less than 2 years on this engine. As for the belt and pulley, Gates would be the good option.

ThomasG · Sep 22nd, 2017, 20:03

Yes... Definitely much better now. Picked her up from garage some 2 hours ago. All the humming gone and the engine works so smoothly that... I could hear a tiny metallic buzzing sound from front left... Dissapeared as engine warmed up...

Next quest.. One day..

oragex · Sep 23rd, 2017, 17:29

Could be a rattle from the heat shield over the exhaust manifold

Georgeandkira · Sep 23rd, 2017, 18:06

"Metallic buzzing" can mean different things to different people.

Could it be the air pump which feeds air through the SAS valve (against firewall) then into the cat to hasten its heating?

If I remember correctly (and if it still applies) the SAS valve (a one-way check valve) can stick open with age allowing moisture laden exhaust gasses to reach the air pump. There the moisture precipitates out and damages the electronics which are strategically (stupidly) located in the bottom of the unit.

If any of this applies to you the prophylactic measure is to drill one or two 3mm holes in the bottom to allow water to escape. The hole(s) only lessen the efficiency of the pump a bit.

ThomasG · Sep 24th, 2017, 12:45

Thanks for info about the pump, but I'll put my bets on that cover. Its sound I'm getting is more like a thin piece of metal shaking/vibrating.. I'll find out in few days.. For now I'm trying to enjoy the other project that I almost finished

Sep 21st, 2017, 19:40	#11
oragex Premier Member Last Online: Jul 26th, 2021 21:24 Join Date: Jun 2013 Location: Coldnada	Aftermarket water pumps are ticking bombs on this car. Aisin is about the only choice. Several people had their low cost pumps fail in less than 2 years on this engine. As for the belt and pulley, Gates would be the good option. __________________ Several Volvo Repair Videos https://www.youtube.com/playlist?lis...ECTts0FSVSOT_c

Sep 23rd, 2017, 17:29	#13
oragex Premier Member Last Online: Jul 26th, 2021 21:24 Join Date: Jun 2013 Location: Coldnada	Could be a rattle from the heat shield over the exhaust manifold __________________ Several Volvo Repair Videos https://www.youtube.com/playlist?lis...ECTts0FSVSOT_c

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Sep 22nd, 2017, 20:03	#12
ThomasG Aka MadBabs Last Online: Nov 11th, 2022 15:29 Join Date: Sep 2017 Location: London	Yes... Definitely much better now. Picked her up from garage some 2 hours ago. All the humming gone and the engine works so smoothly that... I could hear a tiny metallic buzzing sound from front left... Dissapeared as engine warmed up... Next quest.. One day..

Sep 23rd, 2017, 18:06	#14
Georgeandkira Premier Member Last Online: Yesterday 16:59 Join Date: Feb 2009 Location: Hackensack	"Metallic buzzing" can mean different things to different people. Could it be the air pump which feeds air through the SAS valve (against firewall) then into the cat to hasten its heating? If I remember correctly (and if it still applies) the SAS valve (a one-way check valve) can stick open with age allowing moisture laden exhaust gasses to reach the air pump. There the moisture precipitates out and damages the electronics which are strategically (stupidly) located in the bottom of the unit. If any of this applies to you the prophylactic measure is to drill one or two 3mm holes in the bottom to allow water to escape. The hole(s) only lessen the efficiency of the pump a bit.

Sep 24th, 2017, 12:45	#15
ThomasG Aka MadBabs Last Online: Nov 11th, 2022 15:29 Join Date: Sep 2017 Location: London	Thanks for info about the pump, but I'll put my bets on that cover. Its sound I'm getting is more like a thin piece of metal shaking/vibrating.. I'll find out in few days.. For now I'm trying to enjoy the other project that I almost finished

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)