obuhmyuh

does anyone know how many vacuum lines there are on a d15b or d16z6 for that matter?

im trying to hunt down the reason behind my surging idle.
IACV clean, FITV cleaned/tightened, coolant properly pressurized, compression is fine, and valve lash is to spec, which leads me to a vacuum leak. i tried the old aerosol spray and look, as well as tried using smoke, but couldn't find anything.

I even replaced my IACV, still no bueno.

TIA

wmac

mine has a diagram on the hood.
doesn't yours?

austinkli

tps?

obuhmyuh

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wmac &raquo;</TD></TR><TR><TD CLASS="quote">mine has a diagram on the hood.
doesn't yours?</TD></TR></TABLE>

yeah the VECI, im just not sure if im just not seeing one of them.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by austinkli &raquo;</TD></TR><TR><TD CLASS="quote">tps?</TD></TR></TABLE>
tps was changed a lil while ago... it was bad before but didn't show signs like this.

could it be a bad dizzy part? i think my coil has been going for a while, but im too broke to buy a new one.

austinkli

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by obuhmyuh &raquo;</TD></TR><TR><TD CLASS="quote">
could it be a bad dizzy part? i think my coil has been going for a while, but im too broke to buy a new one.</TD></TR></TABLE>

doubt it. a bad dizzy will cause your idle to drop, not really to surge though.

obuhmyuh

yeah wtf is that about, i replaced my IACV and my FITV, but no luck. i recently replaced my HG, head, camshaft, tbelt and all of that ****, including IM gasket... the only thing i can think of is that a vacuum line got crimped or cut with i removed it and pushed it back to get the head off and to get my gasket off/on.

obuhmyuh

my spark plugs have this kind of brownish red color to them, i cleaned em up a bit with some carb cleaner, as well as my o2 sensor, because it was BLACK. heres a pic:


im going to post another thread about the sensor, just seein if its related.

on a side note: my car cold idles fine at 1500 then it goes down to about 750-800 then it SLOWLY starts to fluctuate between 1-1500 rpms.

wmac

i would keep solvents away from the o2 sensor.
also those wires don't look too good where they come out.
you might want to get a new one.

obuhmyuh

do you think that could cause any of my problems?

wmac

very possible, sends signal to ecu.
but the way yours looks, it should be replaced just because of the wiring.

obuhmyuh

i hate doing this, but does anyone have a part number? im not sure what kind i have, ive had 3 different d-series motors, and ive heard so many people saying dont buy bosch and stuff.