2G EGR CEL

[Blazin-Penguin]

Ok so I have a problem when I open the throttle 90% or more. Right As my rpms drop, they will drop so low, that sometimes the car will stall, or recover at 250ish rpm. Also i popped a CEL for the EGR valve, so I replaced the EGR, which fixed it til about 20 miles down the road. Next I replace the IAC because the idle was surging a little. Now the problem is pretty intermittent, but still happens. especially if I am in gear and push in the clutch (I have to clutch in, and then pump the gas really quick)Im thinking its a vacuum leak, but not sure (new to turbo'd cars).

Here's a video of it.
Idle drop/surge - YouTube

 

[Rsawd95dsm]

Do a boost leak test. Just reasearch how to make one and use it and that should help.

 

[Lou98GSX]

turn your biss screw out a little and see what happens . your throttle body could be dirty and not enough air is getting in the engine at idle .

 

[Blazin-Penguin]

I already tried adjusting the biss, but that rendered no results, and also have cleaned TB and MAF. I'll drop by the store and get what I need to build a boost leak tester

 

[1995silvergst]

Do you have the BOV recirculating or open dump? I second the boost leak test as it sounds like air is making it past the maf FYI.

 

[Lou98GSX]

is the egr code still coming back . if it is then that might be your problem .i know you already changed it but there could be a problem with the vacuum supply or the egr solenoid .