P38 overheating

palace · May 20, 2013

Hi all bought a p38 4.0 hse today 2002 LPG beautiful condition and the right price

however it is over heating intermittently drove it 4 times at least 10 miles at a time no probs but tonight a 3mile trip and it boils over what do you al think ?

Saint.V8 · May 20, 2013

Check the rad hoses - are they rock solid...??

Check the Rad - is it hot all over...??

Check the Viscous Fan for correct operation....

Bleed the cooling system to ensure no air pockets....

Change the Expansion Tank Cap....just to make sure....

Check/Change the Thermostat....

Check for good flow from the Water Pump - cheap ones have been known to fail....

lowfat · May 20, 2013

make sure the radiator air flow is not blocked mine was full of mud causing the overheating.

gfromleeds · May 20, 2013

Ive not had much experiance with lpg but im sure ive read more than once that a fault in the lpg can cause it
When was it last serviced?

palace · May 21, 2013

LPG not being used at the moment top hose is soft will replace stat today the return from the water pump to the expansion tank should it squirt or just trickle ?

lowfat · May 21, 2013

check the water pump the impeller detaches from the shaft so it does not pump.

sandyt · May 21, 2013

When you say the lpg is not being used have you removed it from the cooling system - the vapouriser uses the coolant when warm to change the lpg from liquid to gas if it is old then the seals may well be perished easy way to check is completely bypass the vapouriser once thats done you have the car back to original then you can track the problems down orings etc

palace · May 26, 2013

Did not know about the vapouriser changed the rad stat and expansion tank cap now waiting for a new water pump to arrive there is water coming out of the weep hole when it boils over so will replace that any other ideas or is it a new engine jobby ?

alistairhurst · May 26, 2013

lowfat said:
make sure the radiator air flow is not blocked mine was full of mud causing the overheating.

Hi where / how do you do this? Cheers

dogsbody · May 26, 2013

alistairhurst said:
Hi where / how do you do this? Cheers

Lots of time with a hose or gently with a pressure washer.

P38 overheating

palace

Active Member

Saint.V8

Dyed-in-the-wool 100% RR Junkie

lowfat

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gfromleeds

Well-Known Member

palace

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lowfat

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sandyt

Well-Known Member

palace

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alistairhurst

New Member

dogsbody

Very senior member

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