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Thread: Honda Civic 95 idling problem

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    Default Honda Civic 95 idling problem

    My father owns a Civic 95 and runs it mostly on CNG. It has a problem that when the rpms are set at about 700 for CNG and the A/C is switched on they drop to 200-300 and nearly stall the engine. However, at times the rpms go to about 1200 which is normal, I think, for taking the load of the A/C. However, this drop in rpms also occurs even if the A/C is not on and after sometime the engine returns to normal (700 rpms). As a result my father had the rpms permanently set at about 1400 to cater for A/C load but this results in poor fuel economy. What could be the reason? I would be grateful if anyone could diagnose the fault. Thanks.

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    Adnan's
    Daewoo Cielo GLX 1.6L E-TECII DOHC 110PS/5000 150N.m./3400

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    Hello!
    looks like bad Vaccum IDler......there's a vacuum idler which opens up when you turned on A/C it maintains RPMS when A/C is switched on...probably its vacuum pipe is loosened or removed or idler itself gave up.......
    Visit the link for detail info...
    Thanxxx
    TOYOTA Sprinter 86- AE80 DOHC 20v'D TOYOTA Corolla 98- AE101 4AFE 16v

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    Thanx testdriver & SER_GTR. I'll definately have a look at the vacuum valve and see if it is faulty.

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    aur agar koi masla ho to..................... saquib bhai hai na ................ the pakwheels solution to cng problems.........
    Apart from pakwheels, my blogs can be also be viewed at http://tajziat.blogspot.com/

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    Thanx for the help guys. I did a google on 'vacuum valve' and came up with the link below which confirmed your deductions:
    http://groups.google.com.pk/group/alt.autos.honda/browse_thread/thread/38c1f8486cbcbaa0/7e981e9e68f17225%237e981e9e68f17225

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