EGR Vacuum Modulator
#1
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EGR Vacuum Modulator
Couple of months ago, my car started to have engine check light on when I was driving on highway, but it turned off automatically several days later. I had my car checked last week at Lexus dealer and they replaced the EGR vacuum modulator.
To my surprise, the car runs a lot better now, especially under accelaration; more pickup and no hesitation. The hot exhaust gas is now fed properly into the combustion chamber: only under partial throttle (more vacuum) and not under heavy accelaration (no vacuum). I enjoy the car more now for a modest charge (CAD 150 or USD 120).
tvd51
To my surprise, the car runs a lot better now, especially under accelaration; more pickup and no hesitation. The hot exhaust gas is now fed properly into the combustion chamber: only under partial throttle (more vacuum) and not under heavy accelaration (no vacuum). I enjoy the car more now for a modest charge (CAD 150 or USD 120).
tvd51
Last edited by tvd51; 01-03-04 at 08:41 PM.
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I don't know if it's legal to do that in your state, but the fuel economy will be decreased and at the same time you'll put more unburnt gas into the environment.
tvd51
tvd51
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I used to have smoke at the tail pipe at startup. I thought that it could be the idle up valve, but after installing the EGR modulator for about a week, the smoke is gone. I hope it's gone for good, but I can't explain why.
tvd51
tvd51
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both of those things are what i took out, blocked off the pipe in the back of the intake, and put a resistor in the one wire that looks exactly like thishttp://www.mohdparts.com/egr_mods/defeat/index.html
its a pain for me to post pictures cuz im not the best at that kinda stuff
its a pain for me to post pictures cuz im not the best at that kinda stuff
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