Ok, so my buddy (ht user: Steemo) and I fired up his b18a1 a couple days ago but we're having some idle problems.

Upon startup, it'll idle at about 1250-1500 rpms.

I put my finger on the hole in the t/b for the IACV and the idle will drop to a nice ~850 rpms but then throw a CEL with a solid red light on the ECU.

We've replaced the IACV with one off a d-series, and it dropped the idle to 1500 (it used to idle at 2000).

We've also cleaned the IACV out throughly with carb cleaner. Still no luck.

btw, the ECU is chipped to add slightly more fuel since he's running p30 pistons, but the CEL doesnt show up unless you plug that hole in the IM.

Any ideas?

 

bump before I go to bed.

btw, the ECU was tested on an integra with no codes or problems whatsoever.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mr_CRX &raquo;</TD></TR><TR><TD CLASS="quote">
I put my finger on the hole in the t/b for the IACV and the idle will drop to a nice ~850 rpms but then throw a CEL with a solid red light on the ECU.</TD></TR></TABLE>


Are there two holes? lower and upper? (upper = IACV).

try covering the lower hole, it is for a FITV, if equipped. if that drops then you need to tighten it.

 

we have tried plugging the fitv hole and it really doesnt drop the idle at all.

 

Have u actually tryed to adjust the idle with the idle screw? Im sure u have but i didnt see u mention it. I would have thought it be FITV related for sure...

 

bump for Steemo cause im having the same problem.

 

I plugged the FITV hole at first startup and it dropped the idle a couple hundred RPM's, but after it warmed up a little more, the idle dropped on its own and plugging that didnt help any more.

 

u could have a vacume leak. mine did the same, idleing at 1500-2000 turned out to ba a combo. of TB gasket and dirry EACV

 

EACV is the same as IACV right? well if it is, it is clean. the t/b hasnt even come off. We'll check around it for leaks, but it looks to be in good shape to me.

but why would plugging the hole for the IACV make the car idle fine adn then throw a solid CEL? If you dont plug the hole, it wont ever throw a CEL.

 

solid cel as in the cluster light or the red light on the ecu?

 

Well, both. The CEL comes on, so we take a look at the ECU and its a solid red light on there.

 

but when u turn the car off, turn the key to the II position does it flash the code?

 

I'll double check that. I figured it would just flash the code right away since thats what my crx would do.

Thanks for the input.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mr_CRX &raquo;</TD></TR><TR><TD CLASS="quote"> I figured it would just flash the code right away since thats what my crx would do.

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Thats what it should do, not stay on solid. I dont know why it would stay on solid.

 

well i switched over the ecu to another one i had laying around and it throws code 13. its barometric pressure or atmospheric pressure something like that. does any body know how to fix this or where to look? thanks for all the help.

 

ok well after reading a few posts it seems like a lot of people running turbos get code 13. i have p30 pistons in my ls which raises the compression do you think this is why its throwing code 13?

 

bump. anybody else have some input?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fourthgenhatchB17 &raquo;</TD></TR><TR><TD CLASS="quote">


Thats what it should do, not stay on solid. I dont know why it would stay on solid. </TD></TR></TABLE>

Code 0: Faulty ECU

 

I too am running P30 Pistons and can not get my car to idle worth a ****! I need help too!

 

Well, we got the idle down to about 1200-1500 or so (it was bearable, at least) and now its smoking really bad out the tailpipe and aroudn the engine.

We're yanking the head tomorrow to see whats up..

 

would that be the map sensor? are the vac lines hooked up correctly? take some pics if you can..check for leaks