EGR Delete? - Toyota Nation Forum : Toyota Car and Truck Forums

Shakes · 05-02-2005, 01:11 PM

Hello All

Just bought a 91 5sp/1500 Tercel. While giving the engine a once over I came accross what looked like a poor attempt at an EGR delete. The 02 sensor wiring harness was disconnected and a small vacume line which originates at the air box(air filter housing) was cut and blocked off. I was surprised the car ran without the 02 sensor pluged in. I plugged it back in and it ran basically the same. I did not get a check engine light at all with or without the 02 sensor connected. Anybody familiar witht this siutation?

Thanks

tercelsuperfast · 05-03-2005, 02:31 AM

Does the vacuum line go to egr vacuums? Because there is a vacuum that goes to intake and hooks to egr on 96 tercels, and if it is blocked shut, the EGR will always actuate instead of when it's supposed to.

Shakes · 05-03-2005, 11:24 PM

There are two small ports on the top left corner of the air box. One is hooked to a very small vacume line the one next to it is blocked.