Question about 2000 Suzuki Vitara

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Problem with engine rev. when turning the aircon

Usually to a vehicle, when you turn on your air conditioning unit. the rpm usually goes up a notch or so. in my case, my rpm gauge goes down, as if power given by my engine is not supplied properly or so... most of the time, when i drive a few hours, my engine tends to have a higher temperature than most vehicles driven with the same distance and time, also, when i park or stop on traffic jam, with my air-conditioning unit still on, my engine usually stalls due to lack of power or so... i own a 2000 model suzuki jlx model. hopefully somebody understands my question and helps me out with this one. thanks a million.

guy from the philippines.

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  • niwre421 Jul 16, 2008

    thanks a million, will post the outcome asap once i get home...

  • niwre421 Jul 17, 2008

    dude, sorry about the rating... jsut a newbie looking for solutions... didn't mean to put you in a bad situation... thanks for the help anyway, having a hard time to buy the part you said... thanks a million again!



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In most cases, when the A/C compressor is activated, there is likewise a solenoid that is activated. This solenoid is mechanically couple to the throttle and basically increases the idling RPM . This is to compensate for the additional load that the A/C compressor puts on the engine. If this solenoid is defective or the connector detached, then it will not compensate when compressor is active. Then your idle goes down and the probability of a stall increases.

Slight increase in temperature as compared to other vehicles maybe due to:
1. improper mix of water and coolant;
2. defective or delayed opening thermostat;
3. clogged radiator tubing;
4. leak in the engine cooling system;
5. engine using higher octane fuel or improper oil;
5. engine in need of a major tune-up.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Posted on Jul 16, 2008

  • Louie  Role
    Louie Role Jul 16, 2008


    It would appear that this "Inappropriate" rating is another malicious attack by an unscrupulous individual either to discredit me or lower my ranking.

    Your continued support in their removal would be highly appreciated.

    Kind regard.


  • Louie  Role
    Louie Role Jul 17, 2008

    Hi again,

    No prob and its just a challenge to maintain a rank/rating.

    Back to your concern, I am under the impression that said solenoid is already existing and installed in your Suzuki. Perhaps what is needed is to simply adjust it to push the throttle a little bit more to increase the idling RPM. The solenoid would have an adjustable plunger and a lock nut. I'm guessing that it would require a 6-8mm wrench to adjust. Doing so would increase/decrease the idle. The lock nut would simply hold it in place. You may want to reference this page or this image.

    BTW, I am too in the Philippines.




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