Peugeot Boxer overheating (1 Viewer)

[jennymaywright]

We bought our first motorhome last October, an Autocruise Stargazer on a 2001 reg Peugeot Boxer and a couple of times this year while touring Wales and then France we found the engine becoming overheated when driving up long fairly steep gradients. It did help somewhat by easing off the throttle but it doesn't seem to us that this should be happening at all. Water and oil levels are fine. Is this something we should expect and if so, would it help to add an additional cooling fan? We would like to tour in the French Alps area next year so would like to get this sorted out. Has anybody got any ideas for a cure?

Many thanks
Jenny

 

[Geo]

Hi jenny
It will help us to help you if you could explain furthrt your method of determining a over heating engine
I understand if you have steam puthering out of the engine you may wonder why such a question
quite a few have described overheating based purly on the possision of the temp needle
This is after all only a gauge of temp not an absolute given
temp senders do fail and often they get very sensitive to change and can display some alrming readings whenin fact all is operating within normal parametrs.
under normal driving conditiions the needle will start cold reach a given temp around or above /below normal ten drop down again slightly as the thermostat opens it will almost certainly rise as you start to climb hillsbecause the engine is working harder therefoe hotter it may get close to the red and then driop down again indicating all is well
an over sensative sender may well go higher than it should causing concern, change this unit for a new one before loking any deeper into what may not be a problem,
Fi
tting extra cooling fans will of course help the cooling system but not cure genuine overheating faults
Geo

 

[Terry]

Hi Jenny, first place to investigate is the thermostat.Make sure it is opening fully.It could be a faulty gage ?early warning of slight head leak,-- does it help if you turn the heater on hot ?A sure fire way to tell if it is going to over heat is with the heater on it will blow cold before overheating -again early warning to top up with water.
You could try a pressure test on the water side of things other than that it's a case of keeping an eye on things or opening the chq book and let a garage loose on it.
terry

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[jennymaywright]

No, we haven't experienced any steam from the engine - yet, but the needle does rise alarmingly to almost the top red end of the scale but we haven't had a warning light on yet - I guess there would be one? Its looking like we need to investigate the thermostat first. Will also try the diagnostic heater thing. Very many thanks to you both for replying and we'll get onto it.

Jenny

 

[Terry]

Bear in mind Geo is a mechanic :thumb: he put it in simpler terms
terry

 

[maxsdad]

hi jenny sounds like your radiator is partially blocked needs to have radiator removed and flow checked by a radiator specialist and new core fitted if required
dont risk the engine overheating and blowing the head gasket it will cost a fortune to repair.

good luck

dave e

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[aba]

hi jenny
this may seem a little obvious for some so it may get overlooked.
check that the cooling fan/s are in fact working i know of fiats where the fan actually seizes and wont turn so it cant cool the radiator. also the fan switches and relays can burn out over time.
andy

 

[pappajohn]

if the fan works, the water level is correct and the 'stat opens properly it wont physically overheat on normal hills....but on long slow hills it may get hot.

 

[TDH]

Hi Jenny.

Have you tried leaving your bodhran at home - the extra weight may be adding to the problem.

Jac also asks whether there is any steam coming out of anywhere at all?

:thumb:

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[rainbow chasers]

It will either be the theromstat or the fan switch. To test the fan switch and to check the fan hasn't ectually seized, unplug it and short it out. The fan will come on then. Use either thick wire, nail etc bent into u shape and hold with insulated pliers. push into the plug and thus shorting out the circuit. You are manually doing what the switch would do when it gets hot!

If that is all ok, then the thermo would need looking at.

Do remember that all pugs and citroen do move about under load/strain. They will get hot, but never go into the red - near it, but not into it.

Do flush you system occasionally too, especially if only used seasonally - this will stop anything gunging up and blocking your system.

 

[jennymaywright]

You could be right Trev, but I thinks its the weight of all those Rapsquillion songs I have to practise!!!!!

 

[TDH]

The weight of our expectations!!

See you later x

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