Peugeot 306 TD cooling problems

Honest John Back Room » Technical matters
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Sat 2 Jun 2007 14:14
Peugeot 306 TD cooling problems - purp
Hi,

Was wondering if anyone can help me out, I have a peugeot 306 1.9 TD (M reg) and having problems with the cooling.

Temperature was all over the place, so took the thermostat out and ran cold as it should, then put a new thermostat in and wouldnt have it, it overheated, so took it back out and now there is no circulation at all and the engine just heats up.

I have tried bleeding the cooling system but has no effect, the radiator stays cold and after 5 mins or so of running the engine, it drops in revs a little bit and diesel leaks slowly out the top of the injector over the engine, very small amount, but sounds to be struggling.

Could it be the water pump that has finally gone and giving the engine a hard time to turn over ? or could it be due to an old radiator with a few bits of rust here or there ?

Would really appreciate it if someone knows anything about this, thanks ! :)

Joe
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Sat 2 Jun 2007 17:26
Peugeot 306 TD cooling problems - scfc_151
i had a similar problem on an L reg but as i was planning on keeping the car at the time i got it cambelted and a new water pump at the same time. My mechanic stuck a new thermostat on for me at the same time. I also stuck a new radiator on as it was about to leak

Id go for the water pump. When he showed me the old one it was really broken up

hope that helps
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Sat 2 Jun 2007 17:44
Peugeot 306 TD cooling problems - purp
Thanks scfc_151,

It seems to be the most likely culprit... am a bit worried that I havent warped the head or blown a bit of the head gasket, eek! but have had a small diesel leak there for a while now, just at the top of the injector pipes on one of the cylinders. Am going to take it to the garage and wait for the damage to my wallet !

Joe
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Sat 2 Jun 2007 19:42
Peugeot 306 TD cooling problems - scfc_151
is the diesel leak on the injector leak off pipes? If so and its a small dribble i dont think its much to worry about. Maybe try a new pipe or mini hose clip?
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Mon 4 Jun 2007 22:36
Peugeot 306 TD cooling problems - Martin1981
Regarding the cooling problem, my money is on a knackered water pump, in which case the water won't be circulating. If you're paying a garage to replace it, make sure they replace the cambelt at the same time (even if it isn't due for replacement) as the cambelt has to be removed in order to remove the old water pump. Expect to pay around £180-200.

I wouldn't bother replacing the radiator unless it is leaking. That said, replacing the rad would be an easier job if doing the water pump at the same time, due to the bottom hose which links the two and disconnecting the hose from the water pump is easier than struggling with that dreaded bayonet connection between the hose and the rad- a job which I will probably be tackling for the second time soon :-(

Martin

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