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    98 Protege 1.5 5 speed - New Problem.. P0421 Code

    Update time. After driving another 50 miles & completing the drive cycles I mentioned above multiple times, I went & got the emissions test done, which the car passed & about 4 hrs later the CEL light came back on. I haven't had it tested yet to see what the problem is. But just in case it...
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    98 Protege 1.5 5 speed - New Problem.. P0421 Code

    Hello Folks, I posted a message a week or so ago in regards to me getting the P0400 code. Well after trying to clean out the EGR valve, it was determined that the one I had was bad so I replaced it. After having the part put on, had the computer reset & tried completing the drive test (Rev...
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    98 Protege - EGR problem? Code P0400

    Thanks for the response & clarification. I'm planning on looking for some of this stuff tomorrow & going up to my brothers to try this out. By chance since this will be the first time doing something like this & my car has 175k miles on it, will there be anything that I'll notice?
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    98 Protege - EGR problem? Code P0400

    Thanks for the response. I read this same process on a few other threads & it sounds like just about everyone likes this product. I did have another question, which was do you happen to know what auto stores would carry this (Napa, Auto Zone, Schucks, Action Autoparts, etc)? I looked a...
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    98 Protege - EGR problem? Code P0400

    Hi Folks, My check engine light came on not that long ago & found out the issue (going to Autozone) was code P0400. So we took off the egr & cleaned it out, reset the computer. Well about 2 week later (yesterday evening) in fact that light came back on, so I went back to the Zone to see if it...
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