p1129: map higher than expected.
#31
Re: p1129: map higher than expected.
Thank you SOOOO MUCH for this post. I spent a week trying to figure out what was causing my son's 2003 Civic 5 speed to stall when warm, and lose power on the highway around 3500-4000 rpm. It would run fine when cold, but when warmed up would stall when you took it out of gear. Fortunately, I didn't start changing out all the sensors (only one O2 sensor which needed changed anyway). I had several people giving advice and telling me it couldn't be that the timing belt moved (including myself ).
My camshaft had advanced two teeth - I know, how does the camshaft move forward two teeth when it is driven by the crank pulley. But that's what happened. I KNOW it was put on correctly initially, but somehow something happened to make the cam advance.
If you are having the issues described above, do yourself a favor, and before you change out the MAP sensor, both O2 sensors, the IAC valve and countless other items, check your timing. It's weird, but once it's fixed it runs great!
Thanks again for sharing!
My camshaft had advanced two teeth - I know, how does the camshaft move forward two teeth when it is driven by the crank pulley. But that's what happened. I KNOW it was put on correctly initially, but somehow something happened to make the cam advance.
If you are having the issues described above, do yourself a favor, and before you change out the MAP sensor, both O2 sensors, the IAC valve and countless other items, check your timing. It's weird, but once it's fixed it runs great!
Thanks again for sharing!
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Honda Civic Forum
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Klaula86
Mechanical Problems/Vehicle Issues and Fix-it Forum
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10-24-2017 07:02 AM