So again I'm at a point that I can't seem to fix, my ej20g will not idle below 1,100 rpms. I have replaced all the gaskets on the intake manifold, vac lines all new and have clamps on them, the iacv is fully retarded, the tps is the same. The vac lines are ran correctly, yet I'm still having the issue of idling at 1,100 no boost leaks, I've gone through a can of starting fluid with no results. I know that the tps an iacv are god since I ran an mutimeter for volts and ohms and there in spec, the wiring harness to each are good unlike the original issue I had last year. I have tryed swaping sensors and no change in results.
What can I look at to fix this? This what i'm running
ej20g
awic
stock bypass valve/ hks ssqv
- the hks is on only as an aid the stock valve if and when you cup the out let will cause it to idle lower around 800, it leaks pressure at idle. With the hks it doesn't leak any pressue but the idle is back up at 1,100.
Stock ej20g injectors
stock ej22t ecu
stock replacement fuel pump
stock coil pack(ej22t)
ngk iradium plugs
ej20g iacv
ej22t tps ( should be the same anyways)
timing belt replaced 1,000 miles ago with help from a subby tech
yet there's nothing I can think of. Can anyone help I'm at a point that I'm sick of this car.
Yet again idle issues ej20g
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91legacyawdturbo
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Yet again idle issues ej20g
91 SS, v9 ej207 twin scroll swap, Gda wrx dash swap.
2002 wrx sport wagon
2002 wrx sport wagon
Well it takes air to rev a motor.
The TPI should be adjusted as per the book, not cranked right around in any direction. They are quite critical. The IAC should be in the middle of it's travel at target idle speed. The neutral switch should be adjusted and operating correctly.
If the IAC valve is really shut off as you say then there must be an air leak somewhere..
Have you tried disconnecting all the hoses where air could get in until you have only the IAC valve in place?
If you take everything off and it still revs high then it is the IAC valve letting it in. That could be because the ecu or the TCU want it to.
The ecu can make the motor rev higher by moving the IAC or by advancing the ignition timing, something they do if the motor or transmission is running hot.
The TPI should be adjusted as per the book, not cranked right around in any direction. They are quite critical. The IAC should be in the middle of it's travel at target idle speed. The neutral switch should be adjusted and operating correctly.
If the IAC valve is really shut off as you say then there must be an air leak somewhere..
Have you tried disconnecting all the hoses where air could get in until you have only the IAC valve in place?
If you take everything off and it still revs high then it is the IAC valve letting it in. That could be because the ecu or the TCU want it to.
The ecu can make the motor rev higher by moving the IAC or by advancing the ignition timing, something they do if the motor or transmission is running hot.