warm up regulator

["Timothy D.R. Morgan" <t.d.r.morgan@csc.liv.ac.uk>]

Dear QListers,

A friend of mine is suffering with his Santana (Quantum) GX5i, JS
engine. He has identified a few problems in relation to cold starting
i.e. intermittent success, some days it starts first flick of the key,
others it has to be churned, eventually getting it to start with use of
full throttle.

He is also suffering with warm up problems, either from cold or from
partially warm, in that he can get wildly fluctuating idle levels, and
sometimes even when totally warm.

The only fault he can find, having done some limited diagnosis with
Haynes, is that the warm up regulator is not receiving adequate voltage,
as described in Haynes. (resistance of the unit checks out)

My question is, what controls the level of volts to the unit? and if the
voltage is too low, what effect would it have on the behaviour of the
car/engine?

Thanks

Tim.

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Tim Morgan
Connect
Tel: 794 8295  Fax: 794 8270
timm@connect.org.uk

'Be pure, Be vigilant, Be have'