Regarding your comments Mike, James;
MTAYLOR.US.ORACLE.COM wrote:
>
> Do your fans come on in slow speed when you turn on the air conditioning?
> That's what I was doing until I solved my problem, which was just as Mike
> Savage described, namely, the corrosion of the connector or fouling of the
> pins in the connector from the harness to the NTC sensor
Both fans come on when I turn on the A/C
> If the fans are activated with the air conditioner switch ( i cannot recall if
> the fans switch on at switch depression or if the switch has to be in AND the
> temperature selector has to be in demand of air conditioning) then the problem
> is defintely in the connector quality. Also check the base of the sensor
> between the pins for contamination, which can also create a low resistance
> that gets transferred to the connector when it is installed to the sensor.
> Finally, I'd suggest that you use the A/C switch rather than the connector
> removal technique, as the fans have a finite lifespan, and can wear out the
> brushes (4 in each motor) resulting in no fan spin ANYtime, which leads to
> replacement of the fan motors at $~180 each US.
Thanks for this warning. I am now using the A/C switch to cool the
engine.
>
> On last point; be sure that BOTH fans are spinning in the mode that you are
> in;
>
Yes. Both fans are spinning in the mode of having the connector
unplugged.
James McLachlin wrote;
> After drying the connector and checking the pins etc., spraying with WD40 and
> replacing the connector, I turned the ignition and ... both fans
> started at high speed!! After 5 minutes, I tried again. This time, no fans - I
> suspect the WD40 was at fault before. After a few minutes of running
> the engine, 92C caused fans to start at slow speed and lower the temp. Success!
So, the first time you sprayed the connectors with WD40, the fans came
on even though the engine was cold? But afterwards they came at 92C as
they're supposed to?
How are they now?
Is WD40 the ultimate sollution or should I be replacing the pins in the
connector. And these pins I get from...?
> Does this mean that you now have two
> intake runner assemblies to try the extrude-honing on? If so, I suggest that
> we get one in the loop (in the shoppe that does the extrude honing) asap. I
> may volunteer to try it first.
I do now have two intake manifolds (and 2 exhaust manifolds, etc, etc.)
As an aside, it's pretty interesting how this engine I have now is
different from the other two in feel. It feels a LOT tourquier (sp?) at
low revs and definitely I do not feel the need to take it above 4000 as
in the past. It feels like a V6 at between 2500 and 3500! How could
this be? Mind you, I'm not complaining at all, just a little puzzled .
Regards,
Robert Cullemore
89 405 Mi16