Im still hunting down for a good jtd croma
I have seen many but i really want a jtd 16v one and it seem hard to find a good one
As i am a fiat alfa mad i know that if i need a new cambelt is good to change water pump aswell right??
Well i seen 2 of them today with full fiat service history and cambelt replaced but no the water pump...why? I even rang both fiat dealers and double checked with them and they sayd that water pump doesnt have to be changed but they do advise it to customers...
As anyone had problems with water pumps on jtd engines?
Thanks

Changed mine at 5yrs old as recommended(belt) along with all the tensioners etc. The water pump had a lot of "float" in/out when compared to the new one!!

I would recommend a new water pump anytime the wheel arch comes off for maint. Mine has only 36000 now so the water pump schedule is a little bit"elastic" for me:nutter:

its an easy job plenty of room to work on the 1.9, just find a cheaper one that hasnt had belt done and do it your self

I started to suffer overheating on my diesel 8v Croma last year, it turned out the plastic impeller had came adrift from the water pump spindle so wasn't pumping the coolant around the block, it had done 46,000 miles, I changed the belt while I was at it as well.

I replaced my cam belt and water pump at 50K miles / 5 years.

Was thinking about belt only but when I got the old belt off the water pump pulley was floppy and rough (but easy) to rotate.

Immediately decided to put a new pump on.

On the old pump the shaft was floppy (pently of play) and also the plastic impeller was floppy/loose on the end of the shaft.

For the extra half hours labour and the modest cost of a pump (£35) it is not worth the risk of not changing the water pump. If the pump collapses the engine goes BANG! (well almost.....not sure if the breakable cam followers really work that well, especially if they get hit at high rpm)

Would you get a high temperature and/or warning messages or beeps before it went bang?

Edit: Or is the issue not pumping water but jamming the timing belt?

Doofer said:

Would you get a high temperature and/or warning messages or beeps before it went bang?

Edit: Or is the issue not pumping water but jamming the timing belt?

Click to expand...

If the pump is inefficient, there is the possibility of engine overheat and yes, you would get a warning.

What Nick means is that if the pump were to seize it might damage the cam belt, followed by valve to piston contact. Theoretically the belt would slip and squeal before failure but in practice the increased tension could cause it to 'jump' the crankshaft pulley or (more likely) strip the teeth off the belt.

Hope this helps.

www.autolusso.co.uk

They recommend a 4 year interval+ waterpump as well on the JTD's....

Just for the record, and to give anyone else an idea of likely water pump failure: My 8v JTD was the same as bobbyblue above. Impeller didn't break but just came loose on the spindle. Rapidly overheated with red temp warning light on. This happened at 59,900 miles. Nursed it back 20 miles to the garage with frequent stops for cooling and luckily doesn't seem to have cracked the head or blown the gasket. Obviously had the timing belt and tensioners changed at the same time.

It's false economy not to change the water pump with the cambelt service

If I was to buy a car from a dealer who confirmed it had been changed, I would ask for receipts to back this up

Dealers generally are only interested in shifting their cars off the forecourt with as much profit as they can muster out of us and if they can avoid any extra work they will IMO

Like many posts here, changing the water pump when changing the cam belt and tensioners is cost effective. What many people do not do is change the aux. belt and tensioner at the same time, as access is still the same. Easier on a 1.9, difficult on a 2.4.

The water pump is an extra charge on top of the cam belt service, so if you do not ask for it, it will not be done, same goes for the full service, where the carbon activated pollen filter is also charged as an extra, why, nobody seems to know. Same goes for the Alfa 2.0 Twin Spark engine, they have a Variator which must be changed as well with the belts, but so many people forget to fo it, for those owners they need to change the cam belt every 3 years of 36,000 miles. Not cheap ownership if you are keeping the car for along time.

On a Mjet, all belts and tensioners should be changed dependent on the model every 5 years or 72,000 mile whichever comes first, but with many Mjet 1.9 engines having snapped cambelts, the change is every 4 years or 60,000 miles.

If you visit www.Alfaowner.com that site goes into real depth about cambelt failures on the 1.9 on a 147, 156 that have been caused by the waterpump failing either before a change or after the belts changed, but the pump omitted