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Discussion Starter · #1 ·
Greetings 9Kers, I need to do a little brain-picking please. First question, is it possible for low-speed cooling fan to fail to operate when air-con switched on if system needs re-gassing?. Seccond question, I started car, just to move it, and it was only running on 3 cylinders. I resisted the urge to rev it and as I was pulling up the 4th. pot chimed in. It had been fine earlier when driving to work and ditto tonight coming home. Plugs are recent and the 'right ones', any thoughts appreciated. Thanks in advance,TGI Friday!!!.
 

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Yes, sorry - not thinking. The car is a 1994 2.3lpt with auto-box. I've had it just about a year. Mileage is 116,000. Service book is stamped up to 105,000 (last three stamps by VOLSAA - are they specialists rather than dealers ?). It is D.I., but I don't know if it's the original, is there likely to be a date year somewhere like on various other parts?. Hope this is enough info. Neil.
 

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The low speed cooling fan is turned on either by high coolant temperature (honestly!), or by high pressure in the air con system. So if the system is low on gas, it may never reach a high enough pressure to switch on the fan. If the system is really low on gas, there is a low pressure safety switch that stops the system operating, to protect the compressor.

However, the wiring between the low speed relay and either/both the temperature or pressure switch is renowned for failing.

Read this most excellent item indeed for more information.
 

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I had this problem when I owned a 9000 and it turned out to be a blown head gasket It gradually got worse until it would throw out white smoke on start up if left for a while unstarted,I hope it's not your head gasket but worth having a pressure test done.
 
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