Idles at 1500 RPM w/ Greddy Elbow
 

One of the problems I'm having is with my idle... I searched on this subject and people seemed to have success just capping off that line that went to the stock elbow for the AWS start up or whatever

Well I capped off mine, but whenever I start my car the idle won't go lower than 1500, as if the start-up rpm thing is still conflicting?

Even blipping the throttle, starting in gear, etc. does nothing

I also have a Power FC, are you supposed to redo the idle learning process if you cap off that line?

Thanks for any help

sounds like a vaccum leak

hmm this is a possibility but I remember looking the lines over

Could removing the AWS line from the elbow be related to the wax rod, and not making it heat up as quick? I only idled the car up to 55C or so before shutting it off, but I remember before if I blipped the throttle the idle would go down to normal...

There is a gasket, that meets from the TB to the intake elbow.

Maybe when installing the elbow, that gasket wasnt aligned properly or maybe even fell off without you knowing.

I would take off the greddy elbow and find out.

Def sounds like vacuum leak.

If the "leak" is before the throttle body then it will not affect the idle. Idle is only affected if there is a leak past the throttle body. Reason why vacuum lines are after throttle body.


The problem has to be related to the AWS. I would say just eliminate i.

Good point, i guess he would get a "boost" leak if it was the TB gasket.

Btw, i have my AWS capped off because i have the greddy elbow as well but i dont have the high idle.

Maybe it does have to do with PFC settings? Maybe a relearn?

warm it up to 80-85C. The fast idle cam isn't even supposed to drop the idle until 70 C, but sometimes it needs to be warmed up more than that.

Also, the accelerated warmup system wire should have been cut or depinned from the engine harness at the ECU. This is in the instructions for PFC installation.

which wires should be pulled from the stock harness? I got a used pfc and i was told it was straight plug and play. So none of my wires are pulled from the stock harness. I also have idle problems. Sometimes the car idles at 2k, sometimes it bounces fro
1100 to 1600 and sometimes when i engage the clutch the rpms drop low enough the engine stalls. Any ideas?

Hmm, my throttle body elbow never had a gasket for some reason, even the stock one was just mounted straight on? might have to make a gasket...

You dont have to have a gasket from the elbow to the tb. Left it off one time when i pulled the motor a long time ago and didnt noticed any performance loss.

its not exactly a gasket... it's an O-Ring..

Search it or download the us pfc manual for the rx7. There are a few wires that need to be cut from the stock harness in order to run the Pfc right.

it's a o-ring like mentioned before. Not having it will not affect idle...it can however leak boost which will cause the turbos to work a little harder. Also, if your turbos are blowing a more than a little oil it will start to seep out and drip all over that side of the block.