Hi all, upon reassembling my intake, TB, etc. I'm getting intermittent low startup idle, say 250 RPM. I know this can be caused by all sorts of things.

All I want to know is what is the lowest a 2JZ can idle without risk of damage? These motors don't rev high anyway so I'm assuming 250 RPM is fine if not a little bit shaky?

Any ideas?

 

IACV sounds stuck...
Do you have a wideband by any chance? Mine idles around 250rpm and does 12.2:1 AFR whenever the valve acts screwy.

 

Sigh. I tried to open the IACV today to inspect and test it with my bench supply but those damn screws must be made out of lead or something and I stripped two of them even using the proper bit. I needed the car running right away so I just slapped everything back together and capped off the IACV and intake runner 'periscope' because the tube cracked.

I also deleted EGR which I plan on re-enabling and re-routing in a more sane way than putting some dumbass horizontal pipe in the intake right next to where PCV blow-by gases come in. /rant

I'm not asking about lugging, been there done that. I just wanna know if it's safe in the short or long run to idle at around 250 RPM with these engines, because that's what it's doing.

Peace.

 

mods please move to performance and maintenance sub-forum when you get a chance thanks