Quote:
Originally Posted by nelbur
Good work tjts1. I was not even aware of the pressure sensor for the EGR. So if I understand what is going on during the test sequence, the butterfly valve strangles the engine briefly and the pressure sensor measures the vacuum, then the EGR valve is opened and the pressure sensor measures the reduction in vacuum due to the exhaust inflow. That explains why the filtered air approach works, and why my suggestion would not work. Thanks, now figure out how to fool it, please. :-)
|
Exactly!
I tried feeding the pressure sensor a false vacuum source without any luck. I don't think I can defeat the throttle valve without some electronic trickery. The diagnostic system is way too aggressive. The EGR valve itself should be simple enough to defeat with a small air filter as previously mentioned.
We went over to Malibu today and ran across my sort of twin for sale.
98 274k miles, $7900 I'm sure the turbo is nice but not that nice.
