The idle on my car is too low. =(

When i drive down the street and come to a stop it will be at 100-200rpm. Really Low!
It feels like its gonna stahl, but never does & i can barely hear the engine running.

But! Peep this: When i flip on the headlights, the rpm goes up to 700-800rpm.
When i turn on the AC, same happens.
Why does this happen?

 

it could be anything i had a simlar problem, the cause of this for me was a clog in the iacv valve

 

Word.

Also, when the car is warmed up it idles at about 400-500rpm. Then i put it in Drive (its AT)
and then the idle goes down! But when i put it back on Park it goes back up slowly.
Maybe i need to adjust the idle? How?

 

tbh idle in drive should be slightly lower as there's load on the engine as compared to when it's in park

depending on the year, the idle should be in the 600-800 range if i recall correctly

(98 reads 650-750 for AT i believe)


also possible faulty tach? as at 100-200rpms, the car should stall

 

Yeah, engine can't sustain 100-200 rpm for sure. As for the source of your problem - I don't think you need to adjust idle, you definitely need to fix something. I would start with removing EACV and cleaning it.

 

Well, the only mod i have added is a AEM short ram intake.

And, yes it does read at 100-200rpm, cause sometimes i can barely even tell the car is on!

Here's another thing i believe is causing this: When i installed my audio system, i didnt have a capacitor
installed. So about 5 months ago i bought one and had it installed, and as soon as i drove home the car
wanted to stall on me when i came to a complete stop. I thought the capacitor/soundsystem was sucking
up the batterie's juice.
Im not the only one who experienced this after installing a sound system. My cousin drives a '00 Civic EX, and
he also experienced this! Right after installing his sound system (with a capacitor) we went out for a spin, and when he came to a complete stop the car wanted to stall, but never did. His rpm was waaaayyy loooowww at about 100-200 rpm also, and its AT.

anyone?

 

ur car cant idle at 200 rpms and stay on even if it is about to stall, ur reading the gauge wrong

 

OK, now I think I know some of your driving habbits. You never have your cabin fan on unless you turn on A/C. You do not turn the lights on duringdaytime.
If this is correct, go shoot your audio system/capacitor installer

And no, engines do NOT turn that low, they stall way before this. Actually, your cranking speed is higher.

 

^ I'll take a pic of it today and show you guys. U said remove my EACV n cleaning it, but.........how?

 

NO, I don't say any more remove and clean EACV [:@]

NOW I say shoot your installer and have the damn thing wired correctly if I wasright about your habbits.