Auxiliary belt loose

778 Views 13 Replies 3 Participants Last post by SnuggleSeal, 3 mo ago

NEAKY

Discussion Starter · Jun 30, 2018

When driving today the power steering went and battery light came on, drove last couple of miles home and when pulling into the drive the stereo lost power and all other electricals faded.
Checked the car and found the auxiliary belt is very loose.
I assume this is the cause but if the belt is just loose what could be causing this and what is the solution please?

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stu8

· #2 · Jun 30, 2018

NEAKY said:
When driving today the power steering went and battery light came on, drove last couple of miles home and when pulling into the drive the stereo lost power and all other electricals faded.
Checked the car and found the auxiliary belt is very loose.
I assume this is the cause but if the belt is just loose what could be causing this and what is the solution please?

Broken tensioner or far more likely, the bottom pulley has failed, outer ring has gone, leaving the belt sat on the inner ring

Stu

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stu8

· #4 · Jul 1, 2018

NEAKY said:
Thanks
Can this cause any damage?

you dont want to be starting or driving it again until it is fixed. If the car was running ok before you turned it off, its probably safe to assume its fine so far, but I wouldnt run it again

Stu

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stu8

· #6 · Jul 1, 2018

battery will need a charge, and may need replacing, but the aux belt runs the water pump, and alternator, if its the outer pulley ring gone, everything will be turning slower, this will be compounded now the belt is loose. Same loose issue if its the tensioner gone. Obviously this reduces cooling for the engine (especially as its so hot lately) and the dwindling voltage will increase current draw until the electrics fail (as they did)

The pulley if failed will look ok, unless you know exactly what you are looking for

good pulley

outer ring that disappears

Rim Automotive tire Automotive wheel system Gas Circle

Stu

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stu8

· #9 · Jul 9, 2018

NEAKY said:
How come they don't include a check on the this pulley as part of the 45k service, surely it would show signs of wear especially by the 2nd 45k service interval?

Its not really a wear, its a perish, I dont think it would be that obvious unless failure was soon. Also its not an intended wear and tare part, its more like a part failure than a typical service item

Stu

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stu8

· #13 · 3 mo ago

SnuggleSeal said:
Nevermind the RAC came to look and found the crank pulley on the floor under the engine.... lol... going to replace all the pulleys now. :]

Lol, think that a pretty definitive answer. My advice, replace with a new standard mitsi item, rather than aftermarket. Its lasted 20 years, so its simply just wear and tare, as the rubber bond perishes with age

Stu

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