1990 Honda Civic OBDO Testing

1990 HONDA CIVIC
190,000 MILES • 4 CYL • 4WD • MANUAL
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KOOMLEE08
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I wanted to know how to read and check the engine light code on my 90 Civic HB. I think it's a 1.5 liter dual point fuel injected. I don't know how to read it and I think it may be my Idle air control valve because the rpms going up and down from 1500 to 500. I just need some steps on how to check the codes and maybe clearing it. Thanks.
Apr 23, 2009 at 4:27 PM
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RASMATAZ
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Apr 24, 2009 at 9:52 AM
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KOOMLEE08
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Well hadn't done the engine light yet, but my car is getting hard to start now. I had to pump my gas pedal for it to work. It may be my fuel filter or my injectors I'm thinking. I can feel my car jump a little while taking off like it's hard for the engine to breath or not getting fuel. But when at idle, the rpm still goes a little up and down from 1500 to 500. It maybe my ile air control valve too right? To clean it, can I use carb cleaner or throttle body cleaner? Or i it better to buy a new one, which is expensive. Somewhere right there. But I will try the engine check light soon. Thanks dude.
Apr 24, 2009 at 4:35 PM
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RASMATAZ
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Clean out the idle air control valve could be sticking and also look for vacuum leaks
Apr 24, 2009 at 5:01 PM
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