General » rec.autos.tech » vauxhall cavalier 1.8 fan not cutting in.
vauxhall cavalier 1.8 fan not cutting in. [message #781872] Thu, 20 July 2006 16:52
woodys  
Hi im new to this,can anybody help me with this problem??.I have a L reg
cavalier,it drives fine but the fan just wont cut in,and when in traffic temp
goes very high,once i get going again temp comes down to normal.Any help
please.
Re: vauxhall cavalier 1.8 fan not cutting in. [message #781874 ] Thu, 20 July 2006 17:37
kludge  
In article <638864cb39f10 [at] uwe>, woodys <u24317 [at] uwe> wrote:
>Hi im new to this,can anybody help me with this problem??.I have a L reg
>cavalier,it drives fine but the fan just wont cut in,and when in traffic temp
>goes very high,once i get going again temp comes down to normal.Any help
>please.

The fan has a thermal switch in series with it. Find the thermal switch.
Make sure there is electricity to the switch, and make sure the fan comes
on when the switch is bypassed with a wire.

It's either the wiring, the switch, or the motor. If the motor cannot be
turned by hand, that's a strong indication of a motor issue.
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
Re: vauxhall cavalier 1.8 fan not cutting in. [message #781881 ] Thu, 20 July 2006 19:43
woodys  
Thankyou for that i know the basics,but anthing more than that im stumped.

Scott Dorsey wrote:
>>Hi im new to this,can anybody help me with this problem??.I have a L reg
>>cavalier,it drives fine but the fan just wont cut in,and when in traffic temp
>>goes very high,once i get going again temp comes down to normal.Any help
>>please.
>
>The fan has a thermal switch in series with it. Find the thermal switch.
>Make sure there is electricity to the switch, and make sure the fan comes
>on when the switch is bypassed with a wire.
>
>It's either the wiring, the switch, or the motor. If the motor cannot be
>turned by hand, that's a strong indication of a motor issue.
Re: vauxhall cavalier 1.8 fan not cutting in. [message #781882 ] Thu, 20 July 2006 19:52
kludge  
In article <6389e24bffbe7 [at] uwe>, woodys <u24317 [at] uwe> wrote:
>Thankyou for that i know the basics,but anthing more than that im stumped.

Well, what voltage are you seeing on the motor with a meter? Have you traced
the wire from the motor back to the switch yet?
--scott


--
"C'est un Nagra. C'est suisse, et tres, tres precis."
Re: vauxhall cavalier 1.8 fan not cutting in. [message #781907 ] Fri, 21 July 2006 01:41
woodys  
Havnt even got a meter,but motor turns,have got someone to look at it in the
morning.Many thanks.
Scott Dorsey wrote:
>>Thankyou for that i know the basics,but anthing more than that im stumped.
>
>Well, what voltage are you seeing on the motor with a meter? Have you traced
>the wire from the motor back to the switch yet?
>--scott
>

--
Message posted via CarKB.com
http://www.carkb.com/Uwe/Forums.aspx/car-maintenance/200607/ 1
Re: vauxhall cavalier 1.8 fan not cutting in. [message #781919 ] Fri, 21 July 2006 03:43
kludge  
In article <638d040b85cdf [at] uwe>, woodys via CarKB.com <u24317 [at] uwe> wrote:
>Havnt even got a meter,but motor turns,have got someone to look at it in the
>morning.Many thanks.

So take a tail light out and get a piece of wire and bridge it across the
motor terminals. Does it light up?
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."
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