My wife's everyday ride is a '96 Isuzu Rodeo, it has been giving me
fits for the past couple of years starting around this time of year.
On hotter days, the A/C will cut off when the temp gage reaches the
3/4 mark. The engine temp never goes beyond this 3/4 mark, but this is
more noticeable on trips of a couple of hours or more. Especially
where cruising speed is around 70mph for a long period of time.
I would assume there is a cut out for the reason of dropping engine
operating temp as the condenser creates extra heat when the A/C is on.
I keep the maintenance up on this - oil change every 3K, timing belt
and valve adjust every 50K - It has 225K miles on it. The radiator
has been flushed, water pump replaced twice, thermostat replaced -
what else would raise operating temperature on "hot" days?
Thanks in advance..