EGR VSV DIY replaced

[pla]

If you drive a (1996-2001) Toyota Camry, don't be surprised to see a P0401 error code - EGR insufficient flow. I have done my fix and the error code not come back for 150KM so far. If you ran into the same problem, I can show you how the fix is done. Save hundreds dollar and it is worth a DIY.

[mrsub]

我的2000CAMRY四缸也有0401码。我拆了vsv把它装在intake manifold上，便于以后更换。vsv的位置很隐蔽，不过我还是从上面拆出来了，没顶车也没拆轮。
这个vsv拆下来测都是好的，装上去就出码。我的码估计也是这vsv的问题。不过我没有换。现在我bypass了EGR，引擎反应提速都快了。燃油消耗没变化。先这么用着吧，到明年测尾气了就把modulator出来的真空管直接接EGR阀。这种做法不提倡可也是个行之有效的。还好安省只要尾气过就给sticker，不像美国只要MIL亮就不给过。

[pla]

作者: mrsub

我的2000CAMRY四缸也有0401码。我拆了vsv把它装在intake manifold上，便于以后更换。vsv的位置很隐蔽，不过我还是从上面拆出来了，没顶车也没拆轮。
这个vsv拆下来测都是好的，装上去就出码。我的码估计也是这vsv的问题。不过我没有换。现在我bypass了EGR，引擎反应提...

You are right, the VSV is very hard to access, not sure how you can access it from top. I have tested my old one with ohmmeter, the read is 1.25K Ohm way out side the correct range, should be 30-40 Ohm. So I bought a new part from canadian tire and replaced it. So far so good, I agreed, the VSV only affect exhaust gas test, I just don't the check engine light always on and may cause other code being ignored .

[mrsub]

作者: pla

You are right, the VSV is very hard to access, not sure how you can access it from top...

从上面拆这个vsv，在乘客侧，只能用左手摸到它的12mm固定螺栓。还得先拆了fuel injector的电源地线，两个10mm螺栓就在intake manifold后面底部，否则刮手。然后套筒加延长杆，把手再套钢管延长，只要套正了，“啪”一声就松，以后的事就简单了。