Intermitent over-heating

S

Sidecar fan

New Member

Posts

10

Location

North East Hampshire

• Aug 27, 2013

• #1

Recently when towing my P38 will over-heat, usually going up hill so there is load on the engine with the gauge starting to go into the red, and then will go back to normal once we are on the flat or going downhill.

It has also happened when driving, without towing, and once in only just a short distance.

Have changed the viscous fan and coupling and the thermostat but still the same problem.

Any suggestions please.

 

MrGorsky

Well-Known Member

Full Member

Posts

1,751

Location

Buckinghamshire.

• Aug 27, 2013

• #2

Check that your radiator is getting uniformly warm.

If it has cold patches, it maybe silted up and will need a flush or replacement.

 

kevwill

Active Member

Posts

930

Location

Sunny Hastings

• Aug 27, 2013

• #3

+ 1 on radiator. Also check the serpentine belt.

 

Datatek

Well-Known Member

Posts

45,986

Location

Near Poitiers SW France

• Aug 27, 2013

• #4

Sidecar fan said:

Recently when towing my P38 will over-heat, usually going up hill so there is load on the engine with the gauge starting to go into the red, and then will go back to normal once we are on the flat or going downhill.

It has also happened when driving, without towing, and once in only just a short distance.

Have changed the viscous fan and coupling and the thermostat but still the same problem.

Any suggestions please.

Click to expand...

Diesel or petrol

 

S

Sidecar fan

New Member

Posts

10

Location

North East Hampshire

• Aug 27, 2013

• #5

Sorry - should have said it is a 4.6 V8 petrol with an after-market LPG conversion which I don't use.

 

wammers

No longer with us, RIP

Donater

Posts

58,170

Location

Preston Lancs.

• Aug 27, 2013

• #6

Viscous fan maybe worth a look.

 

T

TCubed

Active Member

Posts

991

Location

Surrey

• Aug 27, 2013

• #7

What mileage are you on? If it's ~100k radiator and water pump could be going
If the radiator isn't getting warm evenly, it's probably clogged up.
If it turns out to be pump make sure you get one with a metal impellor.
Check Wammers' EAS how to for details of how to safely check viscous fan... or just shove a newspaper through it for the unsafe check
Expansion cap might also be worth a look

 

gfromleeds

Well-Known Member

Posts

2,234

Location

leeds. westyorkshire, uk

• Aug 27, 2013

• #8

Safe way to check is run it up to temp shut it down and see if it easly turns by hand