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2G Engine dies after rich condition

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2literking

10+ Year Contributor
48
0
Nov 23, 2010
Monroe, Georgia
So I just put my 7 bolt back together, and It's running great. Fixed some oil leaks, dsmlink reading wbo2 at 14.7 idle, oil pressure gauge hooked up, stock injectors re-installed, (cracked my Evo 550's...) Fuel pressure set to 46, (afpr won't go any lower??) Timing reset to tdc, lightweight flywheel installed,

The ONE problem I'm having is that when I push the clutch or pull it out of gear after a rich reading to drop the rpm's back to idle, regardless of speed or rpm. (I.e. stop sign, left turn, parking spot, 60 mph curve entry) it drops straight down to 0 and dies. Sometimes link will notice this and pull it back up to running, but 90% of the time it just dies, so I have to pop the clutch to jump start it again.

Any ideas? Normally does this at<11.0 Afr. No codes, link is reading the correct fuel pressure, injector size, wbo2 switch point and throttle position.

Edit: that's not my car pictured anymore LOL traded the rice for a real dsm. Awd 95 Talon Tsi w/99 gst block & original head.

Edit 2: if somebody can explain the proper way to set tps, that would be great. I physically set it then set the scale and offset on link to match the pedal, but i wouldn't be surprised if I did it wrong.
 
Last edited:
You definitely aren't helping yourself if the TPS is not adjusted correctly. The 2G TPS has an idle switch built in to tell the ECU when the throttle plate is completely closed. You need to rotate the TPS to switch off the idle circuit when the throttle returns to rest. If the ECU is still expecting some throttle when it is really closed, that could be a problem.

You will also want to check the Idle Air Control (IAC) operation to make sure that this throttle body circuit is working correctly too.

Here is a link which will help you test your TPS to ensure proper adjustment, and to check the operation of your IAC valve. It's detailed and some of the picture links have gone dead, but it still gives pin numbers and voltages:
http://www.dsmtuners.com/threads/idle-control-theory-of-operation.54439/

Hope this helps. Glad you're back on the road.
 
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