low idle + stalling when pressing clutch

so when I start the car… it idles at 750 rpm…

but as the car warms up. it idles at 600 rpm.

when Itake it for a spin. when I get ready to stop … if I press on the clutch and let the rpm drop from 2-3000 rpm…

the rpm just drops until it just stalls,…
but then Ican just start the car again w/ ignition.

when I turn on the lights for night time… the warmed up idle rpm drops to like 400-500 rpm…

what gives?

ty

ed

do you have a SAFC2 HOOK UP? If you do, here you go. http://ultimatecarforum.com/smf/index.php?topic=7.0.

If not check for vacum leaks.

Check your idle screw and bring it up if its idling so low. Also check for vacuum leaks. Is your BOV venting to the atmosphere?

whops… this is a ka24de.

well… I’ve checked the TPS connection… it seems to be ok…
the car idles at 750 rpm now
honestly… it’s like darkforce jackal’s problem… it just dips down when ever I take the load off the engine (ie at 2-3k rev… I step on the clutch… )
and then it just shuts down… the rpm needle just drops until the engine dies

I’ve also checked the vaccum lines. but honestly I really udnno where there can be a leak…

please helpo pleaseo…

ty
ed

well …

I’ve tried the grounding method… assuming that the problem is w/ the grounding… like solarian a while back…
grounded the intake body and the alternator…

didn’t solve the problem. … but it is idleing at a higher rpm… but I’m still getting the dipping when I stop to the point where it just goes to 0 and shuts off…

Remove the IACV hose and spray TB cleaner for about 10 secs deep into the IACV metal tube and let it sit for a few minutes.

Re-attach hose and start the car (it’ll die). Then crank it a few times until it starts and hold it around 2,000 RPM’s for 10-20 seconds. Rev a few times to make it catch the idle and take it for a drive.

If this fixes the problem or largely helps the problem, then chances are the IACV is getting stuck or dirty etc. When it gets stuck it can’t regulate the air fast enough and the idle dips or car stalls.

Also, this can cause massive idle hunting and rich idling as the ECU appears to compensate for the valve not working, to try to prevent the car from a stall.

This and/or the coolant temp. sensor connection was my issue, my car never stalls anymore, yay! :slight_smile:

Good luck!

which one is the iacv hose? the unit near the firewall where oyu adjust idle? or can I spray directly into the throttle body?

No, actually the hose actually directly connects to your intake system right near the throttle body (and the other end clamps onto the metal tube you spray into, which is underneath the intake manifold runners).

It’s a bendy rubber hose, about 3/4" thick, almost shaped like a “W” and has a metal clamp on each end.

thanks! I actually tried it…

it’s idling better now…

but I’m still can’t hold the idle as it drops from a high rpm when I come to a stop

could an exhaust leak be causing this issue?