MX3 gods, please help me...

[PilotSmack89]

Hi everyone. I've scoured the forums to find something like this, but i think I have a new problem here...

So my idle sits around 600 - 650... i went through the following steps:

Start her up, warm her to normal operating temperature
Shut down
Jumped GND and TEN with a paperclip
Start engine, adjust screw to desired RPM (i wanted to set 800, so i did that)
It ran fine, so I pulled the paperclip out, she immediately drops to ~500 for approx 10 secs
Turned it off.
Started again, rpm @ 600...

Am i doing something wrong? Or is something broke?

[Mnemonic]

I'm sorry I'm confused... What exactly is wrong with your car? Idle is supposed to be right around 600.

[umcamara]

The idle usually drops once you exit diagnostic mode, so you set it a couple hundred rpm's higher than your target.

[Daninski]

Ha that's funny. With the V6 we set it at 650 and it goes to 700 out of diag mode. The opposite of the BP.

[PilotSmack89]

Lol... yeah, i was reading the manual on the engine, and everywhere i read suggests 750-800 for the B6, so i was working on attaining that... i'll try setting her a little higher tomorrow. Thanks for the help

[PilotSmack89]

Tried it again today - same thing happened

set idle RPM to be 1000, pulled the paperclip, shut down the engine. started it up again, and it went to 1000 for about 5 seconds before reverting to 600 and sounding like it was gunna die...

[Bumpysbro]

have you tried cleaning your IACV? or check your cooling system as well, could have air bubbles in it messin with your idle valve. good luck bro
Jon

[94mx3precidia]

Your not supposed to pull the paperclip out while the engine is running you have to shut it down the pull it out. Its kinda like By-passing the electronics to manually adjusting the idle without the computer knowing.

[umcamara]

Your not supposed to pull the paperclip out while the engine is running you have to shut it down the pull it out. Its kinda like By-passing the electronics to manually adjusting the idle without the computer knowing.

Wrong. Shop Manual

[PilotSmack89]

So in a continuing fit of weirdness, on the drive to work, the idle was still 600.... 11 hours later on the drive home, the idle was 850, but dropped to 700 when i was in neutral with the clutch out

I am so confused lol

[93vtecklr]

Sounds like a wonky IAC to me, I could be wrong though....

[Bumpysbro]

ya thats what i thought too, maybe just a cleaning could fix it, but check cooling system as well.