Timo. 0 Posted July 7, 2004 Do these have a tend to sometimes go? i.e. begin to malfuction. Just my aux electric coolant pump doesn't work when the igntion is on. (I have replaced it!) and i've had the wiring diagram out of the bentley checking all the wires for breaks and power and they are all fine. It does however work when the engine is off and too hot and the overrun kicks in! which is weird. I pretty sure now that something has gone in it. Its the only thing it can be! What do you reckon? Timo. Quote Share this post Link to post Share on other sites
bigpants baby 0 Posted July 7, 2004 think its running normal(well both of mine are doing the same) Quote Share this post Link to post Share on other sites
Timo. 0 Posted July 8, 2004 The aux coolant pump should work with the ignition turned on when and when not, engine is running. Quote:- "In addition, an Auxiliary Electric Coolant Pump also circulates engine coolant anytime the ignition is switched on. The Auxiliary Electric Coolant Pump also runs when the engine is switched off and the coolant temperature goes over 107° C (220° F). It runs in conjunction with the Radiator Cooling After-run System. Circulating the coolant during this time helps cool the engine block and prevent the possibility of air pockets forming in the cylinder head. " It used to work like it should, until the pump died. I didn't get round to changing it for about a month and when I finally put the new one on it no longer worked like it did before. The reason I realised the pump had gone was because I could no longer hear is buzzing away when the ignition was on. Timo. Quote Share this post Link to post Share on other sites
mariovr6 0 Posted July 8, 2004 i just changed mine n it work whenever the key is in now im para does the sides bit connet to the hose that goes to the expan tank and the downwards on to the heater hose?? is this the right way round?? its just the arrow on it points towards the expan n i thought tthats wierd as its also sending the water throu the same hose t came from??? Quote Share this post Link to post Share on other sites