I need to change the thermostat on my wife's Berlingo hdi 75. Is it relatively straightforward, or are there any pitfalls I should know about? I had a look through the tutorials/how to...... section but can't see anything listed.

While I'm doing that job, is there anything to be gained from blanking the EGR?

TIA
Stuart.

The thermostat is on the gearbox end of the engine, it is an expensive (£30+) plastic casting where the radiator hoses lead to.
If you think your thermostat has gone it is worth having a garage test the coolant first as there is a chance your head gasket has gone instead. What are the symptoms?

Blanking the egr depends on your ecu.

Siemens for example will detect the blocked egr and throw it into limp home mode.

If you want to blank the egr your best off deleting it as well.

Thanks for the replies.

(02-08-2014, 09:30 PM)JohnM Wrote:  The thermostat is on the gearbox end of the engine, it is an expensive (£30+) plastic casting where the radiator hoses lead to.
If you think your thermostat has gone it is worth having a garage test the coolant first as there is a chance your head gasket has gone instead. What are the symptoms?

The guage never gets above 70deg even on a hot (22+deg) day. If the engine was getting hot then I'd be worried about the head gasket. I'm fairly certain this will be why the fuel consumption isn't good, either.

(02-08-2014, 10:35 PM)homeruk Wrote:  Blanking the egr depends on your ecu.
Siemens for example will detect the blocked egr and throw it into limp home mode.
If you want to blank the egr your best off deleting it as well.

That's exactly the kind of answer I was looking for (although not necessarily the one I wanted). Thanks very much! :thumbsup: I'll forget that one, then. Wor Lass won't want to spend £x00s on a remap.

Does squirting EGR3 into the inlet tract work on these engines, or will I have to take the EGR, pipe, and inlet manifold off to clean them out? I'm not used to engines where the EGR valve is mounted on the exhaust side, on my BMW it's on the inlet manifold where the TB would be on a petrol engine.

Works best if you take it off

Gives you a chance to give it a proper clean and check too.

I've tried doing a search, but I can't find an answer........

What's the coolant capacity of the 1.6 hdi w/o aircon, please?

A mahoosive 11 litres

(03-08-2014, 08:18 PM)homeruk Wrote:  A mahoosive 11 litres

REALLY?!?!?! :eek:

Hell. My 330d doesn't take much more than that. 11ltrs it is then........ That's going to make my wallet smart.

(03-08-2014, 08:41 PM)StuBeeDoo Wrote:  

(03-08-2014, 08:18 PM)homeruk Wrote:  A mahoosive 11 litres

REALLY?!?!?! :eek:

Hell. My 330d doesn't take much more than that. 11ltrs it is then........ That's going to make my wallet smart.

That's what my Haynes manual says!

Don't yell at me if its wrong!

I thought it strange seeing as the 2.0l hdi only needs 9 litres and that's a bigger engine.

Good job it only needs doing every couple of years

Well, I've done the job this evening. When I got the 'stat from my local Citroen dealer, I asked for the correct amount of antifreeze and was given 2ltrs.

I drained the system by taking the bottom hose off the radiator, and sure enough roughly 4 ltrs came out. Now I'm sure there must have been some left in the system (particularly as the block wasn't drained) but I can't believe there would have been 7ltrs left in there. Good old Mr Haynes!