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heaters

920 views 5 replies 4 participants last post by  bigtree 
#1 ·
hi can anyone tell me why my heaters blow cold when the engine is ticking over if i rev it they get hot i,ve checked the thermostat thats fine the temp gauge reaches normal and the cooling fans switch on and off any ideas cheers dean
 
#6 ·
I've just had a similar thing on my van, bit of a long story but this was one of the problems.

The pump was goosed, I had taken out the thermostat & I could see the impelers on the pump, pushed my finger in & tried to turn them, I couldn't, got a mate to flick the engine over & could see the pump going around so I thought all was ok.

The van was overheating in the end, put in a new pump, sorted it out.

I stripped the old pump down & the impeler drive slpines were nearly none existent, would never have beleived it after seeing it go around.

I got the full pump with casing & seals for just under £40.00 from euro car parts.
 
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