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2004 Suzuki Forenza Question: engine temp goes up and down

 

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salvation, Charlotte, NC, June 18, 2009, 18:19
 Rookie

when driving in the city the engine temp goes up and down... i mean from normal to H in abt 20-30 sec and the back to normal in abt the same time.
when driving on the interstate it jus goes high .

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  • Answer #1

    blindsquirrel July 31, 2009, 09:51
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     Journeyman

    Hello, Have you resolved the problem? If so, I'd really like to know what was causing the problem. Thanks

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  • Answer #2

    shostetl November 18, 2010, 06:58
     Rookie

    If you have resolved this problem can you please post the answer, I am having the same issue

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  • Answer #3

    Visitor, December 20, 2010, 17:35

    I had the same problem the dealer replace my themerstat free

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  • Answer #4

    Visitor, February 05, 2011, 10:24

    slounds like head gasket

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  • Answer #5

    swilson1971 August 27, 2011, 14:53
     Rookie

    OK, well I am having this same issue. I have spent over a thousand dollars SO FAR. Both fans were replaced, the reservoir was replaced, the thermostat/housing/gasket were all replaced with NEW parts. So NOW the mechanic tells me that it is "something electrical" causing it to go to HOT before it even has time to really heat up. (no kidding) - That they tested the HEAT of the engine, it is not running hot, but but by simply messing with the ignition (I guess jiggling the key is what he was saying), he could cause the temperature gauge to go up and down, BUT like I told him, if it is not overheating, WHY when it goes to H in 30 seconds, does my A/C start blowing warm air suddenly, then it goes back to normal on the gauge, and air blows cold again. This is BS and I would really like some answers without having to replace MORE parts that apparently do not solve anything.

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    LegginMF12, February 25, 2012, 15:11
     Rookie

    I have had a truck (chevy) and a car do this. It is your HEAD GASKET. It is blown. You will screw up your engine if you let it keep over heating. Your temp gauge is going from normal to "Oh Crap" in seconds, then if your heater is on it will blow cold air and if your a/c is on it will blow hot air.

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  • Answer #6

    dchad0227 November 17, 2012, 21:28
     Rookie

    change thermostat do a coolant flush and fill will new coolant if that doesnt fix the problem then head gasket,valve cover gaskets egr gasket, check spark plugs,check for vacuum leaks in hoses behind motor just did a job on one of these and this was everything i found that had to be replaced the coolant journeys on the head gasket tend t crack on the factory chevy gasket you want to get the complete felpro hgasket kit and doing the other things i mentioned should fix the problem

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