Temp Gauge/Warning light 90q

[Tihol Tiholov]

On Friday 07 April 2006 03:40, Steve Meyer wrote:
>> The temp gauge on my '88 90q never goes above the
>> first line, and my temp warning light comes on almost
>> the instant I start the car. Yes, the coolent level is
>> full.

> Sounds like the thermostat is broken (frozen open).
An open thermostat lets water continuously circulate,
even when cold, so the water (and engine) doesn't get
up to normal operating temperature.

Faulty thermostat is possible.
Also, since your warning light comes on on cold engine, the
multi(mal)function temp sensor is likely faulty.  It's known to fail and
cause a faulty warning.  It is located underneath the Alum flange on the
front, driver's side of the cyl. head.  Typically one finds partially
corroded harness on its lower side due to leaking coolant collecting in a
rubber dust cap.  A new Multifunc. temp sensor and a repaired harness fixed
it on my Typ 89 - same as yours - and on a friend's Typ 44.