Hi folks,

I've started to remove the thermostat on my 2004 jtd multiwagon. The sticking point is the bracket that goes over the lower bolt. There is a 10mm nut then a bracket that is attached to something that says FIAT Valeo' on and behind that bracket is the 13mm nut to remove the thermostat.

My question is, what do i need to do to remove the 'valeo' thing, so I can access the 13mm nut. Hope that makes sense to someone and you know the answer please?

The rest of the job I can see what to do.

Many thanks nod.

The Valeo cylinder is a heat exchanger for exhaust gas that enters the EGR valve. You need to remove the connecting pipes from each end of it, then it can be lowered out of the way to remove the thermostat.
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Hi Davren, Thanks very much, your post is a great help.

nod.

i hate this job, bad design i think

I'm dong this job too. Given myself a half time to check how others tackled it and it looks like I've come across all the same problems. In addition to removing the two clamps, I decided to bend the bracket of the heat exchanger by 90 deg to get to the lower thermostat bolt in the hope I can unbend it when I build it back up again. Right now, its a horrible mass of undone anonymous pipes, slippery antifreeze covering everything and a bad feeling that when it does go back together, I'm probably going to have more faults than I set out to fix.
What a ridiculous job.
What a ridiculous thermostat.
What a ridiculous price.
Still, its comforting to know that most garages would have the same problems as me to fit the part but they'll be £40 + per hour.
I'm off out for a drink!
BTW I only tackled this because my car runs too cold. I don't think its going to cure it....

Epic first post lol.


A new thermostat will fix the problem of car running too cold.


Thermostats are fail-safe, so they fail to open position for the most part. That means it lets the coolant round the radiator at too great a rate and too soon after engine start, so it never gets properly warmed up.


The thermostat should be pretty much shut when the engine is cold till it reaches optimum them then the stat should open up to allow the coolant to pass through the radiator and cool the car with the aim of keeping optimum temp.