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Squealing belts? but only when lights, heating and windscreen wipers are all go
- Sirjamesrusty
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22 Nov 2023 18:35 #252300
by Sirjamesrusty
I'm starting my Jimny experience as a complete novice on a 2008 Jimny VVTS...
Squealing belts? but only when lights, heating and windscreen wipers are all go was created by Sirjamesrusty
Hi,
I am having problems with a squealing Jimmy. When I drive to work in the daylight no problem. When I drive home in the dark and worse in wet and I have full lights on, heating and windscreen wipers the squealing starts as I pull away at every junction and lasts up until about 25 mph then drops... I approach a junction again slow down and drop the gears and it starts to squeal again. It sometimes also just starts to squeal on a tight corner as I slow down as well.
I'm just wondering what it is that is causing the squeal - Battery? Alternator? or belts and pulleys? - Is it something that will get worse and cause further damage??
Thanks
Chris.
I am having problems with a squealing Jimmy. When I drive to work in the daylight no problem. When I drive home in the dark and worse in wet and I have full lights on, heating and windscreen wipers the squealing starts as I pull away at every junction and lasts up until about 25 mph then drops... I approach a junction again slow down and drop the gears and it starts to squeal again. It sometimes also just starts to squeal on a tight corner as I slow down as well.
I'm just wondering what it is that is causing the squeal - Battery? Alternator? or belts and pulleys? - Is it something that will get worse and cause further damage??
Thanks
Chris.
I'm starting my Jimny experience as a complete novice on a 2008 Jimny VVTS...
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- Roger Fairclough
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22 Nov 2023 18:41 #252302
by Roger Fairclough
Replied by Roger Fairclough on topic Squealing belts? but only when lights, heating and windscreen wipers are all go
Classic sounds from a slipping alternator belt. It may be the belt is past it's best or it needs tightening or, depending on the model, it may be the drive pulley is breaking up.
Roger
Roger
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- Sirjamesrusty
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22 Nov 2023 20:34 #252307
by Sirjamesrusty
I'm starting my Jimny experience as a complete novice on a 2008 Jimny VVTS...
Replied by Sirjamesrusty on topic Squealing belts? but only when lights, heating and windscreen wipers are all go
Thanks Roger,
That's helpful. Is there an order of replacement I should look at. For example should l be changing the belt for a fresh one to help me diagnose any other issues while I did that ?
Thanks
Chris
That's helpful. Is there an order of replacement I should look at. For example should l be changing the belt for a fresh one to help me diagnose any other issues while I did that ?
Thanks
Chris
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22 Nov 2023 22:29 #252312
by DrRobin
2020 blue SZ5 (one of the last to be registered in the UK)
Ex 2011 Blue Jimny SZ4
Northumberland Jimny Blog
Replied by DrRobin on topic Squealing belts? but only when lights, heating and windscreen wipers are all go
Hi,
It sounds like alternator belt, mine currently has a touch of it in the first few miles, especially at idle and when it is damp. Mine has newish belts and pulley, so it probably just tension.
I would say first check the tension, then the general belt condition and finally the pulley.,it doesn’t take long to check/adjust and if it needs it the parts aren’t expensive. I have a PM from you, so will sort something out soon.
Robin
It sounds like alternator belt, mine currently has a touch of it in the first few miles, especially at idle and when it is damp. Mine has newish belts and pulley, so it probably just tension.
I would say first check the tension, then the general belt condition and finally the pulley.,it doesn’t take long to check/adjust and if it needs it the parts aren’t expensive. I have a PM from you, so will sort something out soon.
Robin
2020 blue SZ5 (one of the last to be registered in the UK)
Ex 2011 Blue Jimny SZ4
Northumberland Jimny Blog
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22 Nov 2023 23:08 - 22 Nov 2023 23:09 #252314
by facade
If it suddenly breaks, go back to the last thing that you did before it broke and start looking there
Replied by facade on topic Squealing belts? but only when lights, heating and windscreen wipers are all go
Check the bottom pulley.
The "design" is very poor, and tensioning the alternator belt tends to rip the outer grooved part (light green) off the inner hub (mouldy green colour)- the inner hub is bonded to the outer grooved part with a thin strip of rubber between the parts (red).
The result at first is that the belt is difficult to tension, eventually when enough of the rubber delaminates, the outer pulley vibrates frighteningly as the engine is revved up, until it eventually falls off along with the belts. Then it is time for the recovery truck as you can't get any drive to the water pump and the engine will overheat.
Try and pull the pulley off, if there is any movement you need a new one.
The "design" is very poor, and tensioning the alternator belt tends to rip the outer grooved part (light green) off the inner hub (mouldy green colour)- the inner hub is bonded to the outer grooved part with a thin strip of rubber between the parts (red).
The result at first is that the belt is difficult to tension, eventually when enough of the rubber delaminates, the outer pulley vibrates frighteningly as the engine is revved up, until it eventually falls off along with the belts. Then it is time for the recovery truck as you can't get any drive to the water pump and the engine will overheat.
Try and pull the pulley off, if there is any movement you need a new one.
If it suddenly breaks, go back to the last thing that you did before it broke and start looking there
![:) :)](/media/kunena/emoticons/smile.png)
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Last edit: 22 Nov 2023 23:09 by facade.
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23 Nov 2023 17:55 #252333
by Sirjamesrusty
I'm starting my Jimny experience as a complete novice on a 2008 Jimny VVTS...
Replied by Sirjamesrusty on topic Squealing belts? but only when lights, heating and windscreen wipers are all go
Thanks very much for that advice. I will do some checks again in the light tomorrow. Chris.
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26 Nov 2023 08:41 #252388
by Phaeton
Replied by Phaeton on topic Squealing belts? but only when lights, heating and windscreen wipers are all go
Just to explain what is happening for future reference, the more current you need to run your lights, heater, wipers etc. the more the alternator has to 'work' the more it 'works' the harder it is to rotate as it's generating the electricity. Normally what happens is that as you start the car the starter motor takes a chunk of energy out of the battery which the alternator tries to replace, hence why some belts will only squeal for a few minutes until the battery has recovered. I suspect yours has now got past that stage & is slipping even after the that point, it might be worth in the short term until you can look at it, start the car, give it a minute before driving off.
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- rogerzilla
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26 Nov 2023 17:35 #252400
by rogerzilla
Replied by rogerzilla on topic Squealing belts? but only when lights, heating and windscreen wipers are all go
Also check for a slight coolant leak. Leaks from the top hose or the pump tend to get onto the belts, and it's slippery stuff.
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- Sirjamesrusty
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28 Nov 2023 10:54 #252427
by Sirjamesrusty
I'm starting my Jimny experience as a complete novice on a 2008 Jimny VVTS...
Replied by Sirjamesrusty on topic Squealing belts? but only when lights, heating and windscreen wipers are all go
Thanks for that description. That does make a lot of sense in my Jimmy
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