Engine noise. Water pump? - Toyota Yaris Forums

sh0rtlife · 07-11-2022, 02:12 AM

how well does the AC work....im wondering if the AC unit is on its way out, a cheep check would be to change the belt to a non AC belt, if the noise goes away then its the AC unit..if it doesnt, then remove the belt entirely and start the engine you only need it to run for 30 seconds or so..if you have no noise then youve now narrowed it down to the alt or the water pump....if it narrows down to those to then try hand spinning both of the, and you should be able to verify

having a NON AC belt in with the spare tire can save you HUGE if something should happen to the AC compressor or belt..the non AC belt can be swaped on the side of the road with little more than 2 wrenches and 10 min(12 and 14mm i belive).....ive been carrying a non AC belt in every ac car ever since i dropped a belt on a minivan out in the sticks...its saved me a tow on multiple rigs over the decades

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
08 Yaris strange whining noise from either water pump or?	Paulywalnuts	DIY / Maintenance / Service	9	10-22-2024 07:15 PM
Odd Fuel pump issue. Feeling at a loss.	Marchalis	DIY / Maintenance / Service	4	03-06-2018 08:55 PM
Has anyone had their Water Pump replaced?	Carrot Top	DIY / Maintenance / Service	48	03-20-2017 01:32 AM
Car shuts off when A/C turned on...	Howster	DIY / Maintenance / Service	33	07-06-2013 05:00 PM
A Mystery Oi'll Say!	Yar Is Word	Fuel Economy Forum	16	05-11-2013 04:22 AM

07-11-2022, 02:12 AM	#2
sh0rtlife Drives: 2007 5dr canadian import Join Date: Dec 2016 Location: pacific north WET Posts: 1,014	how well does the AC work....im wondering if the AC unit is on its way out, a cheep check would be to change the belt to a non AC belt, if the noise goes away then its the AC unit..if it doesnt, then remove the belt entirely and start the engine you only need it to run for 30 seconds or so..if you have no noise then youve now narrowed it down to the alt or the water pump....if it narrows down to those to then try hand spinning both of the, and you should be able to verify having a NON AC belt in with the spare tire can save you HUGE if something should happen to the AC compressor or belt..the non AC belt can be swaped on the side of the road with little more than 2 wrenches and 10 min(12 and 14mm i belive).....ive been carrying a non AC belt in every ac car ever since i dropped a belt on a minivan out in the sticks...its saved me a tow on multiple rigs over the decades