On Tue, 29 Apr 2008 18:37:00 -0700 (PDT), p5388@[EMAIL PROTECTED]
wrote:
>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..
First thing to do is find out if it is really getting that hot or if
you just have a temp sending unit that has gone out of spec. If it's
cheap enough I usually just replace the sending unit and see if there
is a change.
Next thought would be a clogged radiator. Any decent radiator shop
should have a heat gun and be able to check the radiator for cold
spots (indicates clogged radiator with no water flowing through that
area). At 225k it's a pretty safe bet that you have some radiator
issues.
Steve B.
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