Ignition switch 740

[Andy Mann]

My ignition switch is sticking, when I start the car I have to wiggle the
key in the ignition to get all the functions to work such ass radio windows
windscreen wipe etc.

I also not that from time to time the seatbelt warning also does not work.

I have a problem with the cooling system which looks like it is only there
when the seatbelt warning is not working.

What circuits could be affecting the cooling system from the ignition switch
or the drivers seatbelt warning.

 

[Michael Pardee]

My ignition switch is sticking, when I start the car I have to wiggle the
key in the ignition to get all the functions to work such ass radio
windows
windscreen wipe etc.

I also not that from time to time the seatbelt warning also does not work.

I have a problem with the cooling system which looks like it is only there
when the seatbelt warning is not working.

What circuits could be affecting the cooling system from the ignition
switch
or the drivers seatbelt warning.

I'm thinking the problem isn't with the cooling system but perhaps the
temperature guage itself not working right - unless you are getting actual
overheating signs.

The only electrical tie I can think of is that there is an electrical
auxiliary fan in front of the radiator. It usually isn't needed except in
hot weather, while idling at a stop.

I recommend you replace the ignition switch soon. They tend to deteriorate
from week to week, and sometime you may be stranded. It is a common failure.
The switch electrical part is easily replaced and is under $100 US from
aftermarket places like IPD
http://www.ipdusa.com/productscat.aspx?CategoryID=63&NodeID=646&RootID=629

Mike

 

[Peter K L Milnes]

As a codicil to that Mike, one of my VOC members recently took his car to an
auto electrician as he had a very similar fault with his ignition switch (as
indeed I have). He was told that the printed circuit behind the instrument
panel needed some dry solder joints attended to. So far it seems to have
done the trick. I am a bit sceptical but time will tell.

All the best, Peter.

 

[Michael Pardee]

As a codicil to that Mike, one of my VOC members recently took his car to
an auto electrician as he had a very similar fault with his ignition
switch (as indeed I have). He was told that the printed circuit behind the
instrument panel needed some dry solder joints attended to. So far it
seems to have done the trick. I am a bit sceptical but time will tell.

All the best, Peter.

It could be. The instrument cluster comes out easily enough to make it an
inexpensive thing to do, and the circuit board is large enough and with
heavy things like connectors that there could be cracked solder connections.
Good on them if they hit on the answer.

Mike