Idle Problem - 98 Civic DX - Please Help!
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Idle Problem - 98 Civic DX - Please Help!
So I started up my car this morning, and it idled around 800-1000, normal for the temperature in my area this morning. I backed out of my garage and stopped so I could close my garage and noticed that it was already down to 500-600 RPM, which was its normal operating temp.
I came up to my first stop,took it out of gear and the RPMs dropped all the way to 100 and was about to die. So I gave it gas to keep it from stalling.
I turned off my car then turned it back on, and it idled perfectly then I gave it a little gas and when the rpms came back down it dropped to about 300 then worked its way back to 500-600...so I continued on my way to school and noticed that once again if I didn't keep giving it gas it would die.
What could this be? This has never happened before. I'm thinking it's either a bad spark plug or a bad injector, mabye a bad air temp sensor? I really have no idea what it could be, I'm just guessing. Any help would be great.
Car: 1998 Civic DX Coupe - 5 Spd
I came up to my first stop,took it out of gear and the RPMs dropped all the way to 100 and was about to die. So I gave it gas to keep it from stalling.
I turned off my car then turned it back on, and it idled perfectly then I gave it a little gas and when the rpms came back down it dropped to about 300 then worked its way back to 500-600...so I continued on my way to school and noticed that once again if I didn't keep giving it gas it would die.
What could this be? This has never happened before. I'm thinking it's either a bad spark plug or a bad injector, mabye a bad air temp sensor? I really have no idea what it could be, I'm just guessing. Any help would be great.
Car: 1998 Civic DX Coupe - 5 Spd
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I would bet it's a bad idle air control valve. You can try running a bottle of injector cleaner though it to see if it helps. Judging from your location, I imagine the tempurature has taken a drastic shift in the last couple of weeks. It could be your car's ECU trying to figure out what's going on.
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11-11-2004 04:16 PM