Has anyone got a pic of the location of the thermostat housing on a Stilo 1.4 95hp engine? Any tips on how best to replace the thermostat thankfully received.

item 11 on right hand side is thermostat. 10 is the seal. Not sure what 12 screw and washer assay.


Looks like a pretty straight forward item.


Ideally you want to look for the lowest point in the system, like bottom radiator hose and pull that first to drain the system. Otherwise you risk soaking everything in coolant as you remove the stat.

So drain system first. Coolant is highly toxic and poisonous to animals so you can't just tip it down the drain. If you do spill any onto your drive / garage, road, be sure to clean and rinse thoroughly so you don't harm anyone / anything.


The new stat should come with a new seal. Check the job out before hand to make sure that where they've used silly fiat clips that you've got the correct size jubilee clips to replace them with. You can re-use the old ones but for the cost they're so much easier to replace.


Before you remove the stat itself place an old towel or something underneath it to catch anything that spills out - as some will. You want to avoid any falling into the bell housing if they have inspection holes or anything like that.


Once removed you'll no doubt have some crustiness around the mounting surface, give that a rub down for a nice clean seal and re-fit.


Top up with new and correct type coolant (Halfords have a guide book on the shelf to advise which type you need) and run the car up to temperature. As the stat opens for the first time you'll no doubt find that the coolant level drops right down so you'll need to top it up some more until you get the air out the system. You might need to squeeze / pump on the top hose a bit too just to get things moving and tease the air out.


Have fun.

Many thanks for this Artemis. It gives me great confidence to approach the job.

No worries mate. As thermostats go it looks like a straight forward one really, it's only two bolts on the stat itself.

Artermis said:

No worries mate. As thermostats go it looks like a straight forward one really, it's only two bolts on the stat itself.

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Very simple job to do - can be a bit messy when messing with cooling systems but as Artermis said, use towels to soak / catch anything, a spare washing up bowl will help too, also - when running the car up to temp, put the blowers on full power with heat turned up to ensure the matrix gets a decent supply with no air locks (if this system works like that).

Just a bit of info, had my coolant flushed out and some new stuff put back in with a new thermostat along with a new alternator belt too (as mine was squeaking) - cost me £30 (price included belt, coolant, thermostat and labour) and it took the garage about an hour to do, they also had to remove the crank sensor as its bolted to the front of a bracket in front of the crank (think its the crank) (right where the belt needs to slip off) this was on the 1.2 but think the 1.4 is the same (just bored out more) correct me if im wrong.

Would of done the work myself but didnt have time as was working stupid hours.

Tip: Don't buy aftermarket thermostats for this engine, they don't last as long as the original Fiat part. Also, sand the mating surface once you remove the old one and use a thick paper gasket. I had to replace the jubilee clip that attaches the hose to the stat as the original is single use, so bear this is mind too. Takes no more than 10 minutes to replace the stat itself, takes longer to bleed the system.