<p5388@[EMAIL PROTECTED]
> wrote:
>
>The radiator has been flushed with an acid flush, also I have not been
>able to detect any cold spots in the radiator. The last water pump I
>put on, I did a test flow while the radiator was off, and volume
>output seemed more than adequate. I also washed out the fins of the
>radiator, but they really weren't that dirty.
I'm still thinking gunked-up radiator. If the radiator is partially
clogged
already the acid flush won't do it much good.
>I have thought about the fan clutch, although it seems to be "stiff"
>when cold and "free" when heated up
This is bad. It should be the other way around... the thing is supposed
to
become stiff when it gets hot in order to make the fan go faster when the
engine is hot.
However, if the problem is happening at 70 mph, it probably isn't related
to the fan. At highway speeds, plenty of air is going through the
radiator
so that you don't need the fan at all. In heavy traffic, the fan is
critical.
>I will check the ignition timing to make sure, but I check it "by the
>book" each time I put a new timing belt on.
>
>Thanks for all the input - sooner or later we'll get this resolved, at
>28 mpg, I sure hate to give up on it.
Try this: take the thermostat out completely. If you do this, the engine
should be running WAY abnormally cold. Does it?
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
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