Question about 1999 Isuzu Rodeo

2 Answers

Have a 1999 rodeo. with a new thermostat and radiator. I drive a mile,but it runs hot, but radiator still cold and full up.

I add for you, the dash gauge shows hot. but the engine/RAD is not too hot. infact still cold. right?

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  • Isuzu Master
  • 20,706 Answers

The dash gauge or its sender is bad.
use and IR gun for $15 and see that the coolant is
at 180F and the old crapppy gages is fibbing,
common this.
above poster forgets to read the COLD word.
and fails you big time.

I will now read the book for you.
the SM, service manual to see how yours works
most cars changed radically from 1996 to 2000
2.2L
3.2L engine? oops both are same, had to look both.
the sensor has one wire
and is not the ECT sender with 2 wires.

Have a 1999 rodeo. with a new thermostat and radia - 8e4fce4c-8955-4331-880b-a724f762e145.jpg

Posted on Dec 10, 2016

  • 3 more comments 
  • _-__-___-_
    _-__-___-_ Dec 10, 2016

    dead accurate,
    mine reads 170f at stat housing.
    the loss of 10f is in the metal,thermal spread. or more. gut not above 200f.
    if this tests passes, then the dash gage or its sender is bad.
    http://www.harborfreight.com/infrared-th...

    if confused get the car serviced
    like most do.
    a real ASE shop will not cheat you.
    they do the tests, and tell you the truth.
    google find ASE shop by zip.
    win.

  • _-__-___-_
    _-__-___-_ Dec 10, 2016

    posting for engine not too hot
    but CLUSTER gauge is,
    is this hard?

  • _-__-___-_
    _-__-___-_ Dec 12, 2016

    the rule in shops, never trust cluster gauges, sure take action but use real gaugex
    to prove the cluster is right or wrong.
    or on newer cars, like this car, USE A scan tool shows ECT reading 180F, but gauge is wrong (shows hot)
    or the scan tool shows ECT is too hot, say 250f. and cluster is same.
    so we IR gun the engine and rad. its 180f
    oops the ECT is bad. it lies. and is bad.
    or has air pocket below it, but levels were first. air pocket cause all ECT to go nuts.
    (hot,cold , lies, hot/cold lies. repeats)
    Chaos
    easy no?>

    using tools. not guessing.

  • Anonymous Dec 13, 2016

    if the wire falls off the gauge reads zero
    if the sender short it reads max temp
    my guess , it runs hot meant
    that the dash gauge reads hot.
    so that means the wire is shorted to ground
    or the sensor shorted inside.
    cold engine, hot gauge, end.

  • _-__-___-_
    _-__-___-_ Dec 15, 2016

    later, years, this part was deleted.
    and the ECU, then sends, data directly to the gauge, up to todays cars.
    yours is old old skool(sic) way.

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  • Contributor
  • 47 Answers

It's the water pump

Posted on Dec 08, 2016

  • Anonymous Dec 10, 2016

    bad guess.

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SOURCE: heater will not blow hot air. it blows cold air

The heater core is possibly blocked or the temperature adjuster is not working.

First check the controls to be certain that the temperature aduster is working and the flaps/doors that direct the flow of hot air are working.

If they are..........

Check heater hose temp. If one is hot and one is cold, you are not getting flow through the heater core.

Bleed it to remove an air blockage.
If that does not work, flush the system.
If that does not work, replace the heater core.

Karl at topgunwon.com

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asetech74
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SOURCE: half of my radiator is hot and the other half cold, my 2001 cadillac deville running hot

Sounds like you have a clogged radiator, i would recommend trying to flush it out before replacing it.

Posted on Sep 09, 2012

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