I seafoamed my car, and now It runs okay, but Sometimes when I come to a stop my idle will drop down to 400 and 200 RPM, TOday it dipped down too 100 rpm.

I couldnt beleive my eyes, The car should have stalled but it kept running and after 7 seconds it picked back up to 500,

What could cause my idle dip?

Its only right after I let off on the throttle like coming to a stop.
Thanks

 

check your spark plugs

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ITB &raquo;</TD></TR><TR><TD CLASS="quote">check your spark plugs</TD></TR></TABLE>

Just replaced them before it happend.

but its been dipping down to 200 RPM quite often

 

whats the normal idle? my car is like in the middle. not at 1000, not at zero, but 500 and sometmes 400.

My car also shakes alot too. but, if i step on the gas, and let it rev to 900, them my car stops shaking.

i tried to adjust my idle screw, but its already maxed out. i think imma mess with my throttle cable.

 

had the same issue and forgive me because i cannot remember the name of the part - but right next to your air intake opening on the actual motor there is what looks to be a screw, turning it to the left or counterclockwise will cause the idle to raise and clockwise will lower the idle, mine was going so low it was actually dying then i turned 6 turns to the left and now i dont have an issue - ill look around for what the part is called, its escaping me right now.. its on the manifold ... bah

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nObOdy65 &raquo;</TD></TR><TR><TD CLASS="quote">had the same issue and forgive me because i cannot remember the name of the part - but right next to your air intake opening on the actual motor there is what looks to be a screw, turning it to the left or counterclockwise will cause the idle to raise and clockwise will lower the idle, mine was going so low it was actually dying then i turned 6 turns to the left and now i dont have an issue - ill look around for what the part is called, its escaping me right now.. its on the manifold ... bah
</TD></TR></TABLE>

IACV?

anyway its not an adjustment because it idles fine at 750 a lot of the time, but sometimes it goes out of whack.
It must be a sensor or maybe something else

Any ideas?

 

dont think its the IACV its right there. lol

 

Seafoan can sometimes ruin an O2 sensor.


Not a brand new one per say but one that was already deteriorating.
Thus, I can almost guarantee 99.9% that it's your O2 sensor.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nObOdy65 &raquo;</TD></TR><TR><TD CLASS="quote">

dont think its the IACV its right there. lol</TD></TR></TABLE>
thats the idle screw

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NightRider-gsR &raquo;</TD></TR><TR><TD CLASS="quote">Seafoan can sometimes ruin an O2 sensor.


Not a brand new one per say but one that was already deteriorating.
Thus, I can almost guarantee 99.9% that it's your O2 sensor.</TD></TR></TABLE>

Its obd2 so I assume it would throw a CEL
I doubt its o2 sensor due to lack of any CEL

 

Aha! YES thank you, i was driving myself nuts trying to remember what its called, just raise your idle a little bit and see if that doesnt help...

 

My IM looks different than that, Its a 98 Integra, Could someone post a pic of the location of the adjustment.

thanks

 

how are you measuring 100rpm? Do you have an aftermarket tach? The stock tach doesn't read below either 400 or 500 RPM or something like that.

 

it was at the lowest of low notch, right next to the O RPM so say this is

1 and this is 0

&lt;1_K ---------|- O_K&gt; Marked with a |

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dc4g &raquo;</TD></TR><TR><TD CLASS="quote">My IM looks different than that, Its a 98 Integra, Could someone post a pic of the location of the adjustment.

thanks</TD></TR></TABLE>

Look left and below your throttle body, you should be able to see a flathead screw there. I cant remember which way is which to raise/lower idle but you will soon figure it out. Although I doubt that will help your problem seeing as you havent ever adjusted that.

 

Counter clock wise to raise idle clock wise to lower idle, I'm pretty sure but not positive!

 

I had the same problem. The screw has a little hole in it and it might be pluged up, so remove your TB and clean that out. Also it can be the TPS.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SlammedDC2teg &raquo;</TD></TR><TR><TD CLASS="quote">I had the same problem. The screw has a little hole in it and it might be pluged up, so remove your TB and clean that out. Also it can be the TPS.</TD></TR></TABLE>

which screw?

 

The idle control screw. Also you should try going to http://www.g2ic.com . I know its for DAs but they got a tech section that can help you.