Hello, 

I've stopped using the car as there is a whirling sound that has appeared after the coolant flush, I believe could be the pump. It is most noticeable between 1500 to 2000 rpm, specially after removing the foot of the accelerator. I am looking at a new belt kit and water pump, it's a 2001 mk1 1.9SDI, and using an online parts web site, plugging in the number plate there are a few variants listed so I am a bit stumped.

Does anyone have any ideas?.

Cheers

Go here Waterpump for mk1fabia 2002 sdi. - Skoda Fabia Mk I - BRISKODA

Thanks for the info, I will check it up

 

Could be the water pump, but the sound could also be due to sploshing by air left in top radiator hose (and the engine head) mixing in with the water. Squeeze top rad hose to check, partly disconnect (on de-pressurised system!) to remove air.

Ignoring this frequently leads to a head gasket job some later, as the head overheats.

 

 

 

I finally changed the timing belt, It seems to make less noise, I also made sure there where no air bubbles in the system as suggested above, however I was surprised to find that the air conditioning  pulley is narrower than the pulleys driving the alternator etc, so had to replace the existing belt with one of equal width leaving the inner grooves un-used. Is that a common feature, or might my ac been replaced with a different one ?.

Cheers

Sounds like A/C compressor or its pulley are not correct fitment. Photo?

Don't know if it's clear, but check the rust on the tensioner pulley

 

 

I had to put the old belt back on because the new one ( wider ) did not fit the AC pulley, so will have to get a new belt to fit

Isn't there rust on the crank pulley too? Innermost groove unused? Wrong belt?

Edited 25 May, 20215 yr by Wino

True, the pulley driving the alternator shows no rust because I replaced that but clearly shows an exposed groove. Wrong AC or AC pulley

Edited 25 May, 20215 yr by Rocketfella

Well I guess it should be OK running with a belt that's one groove narrower, as long as it's the right length so the tensioner operates in the right way.

1095mm, according to this page (item 22): connecting and mounting parts for alternator; pol... - Fabia(FAB) [EUROPA 2001 year] (7zap.com)

Yes, I think the old one is a bit long as the tensioner reaches the limit, but although it might be undertensioned, it seems not to slip. 

Thanks for the help