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FD is bucking, backfire's and running lean

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Old 05-09-11, 02:29 AM
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Aad
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FD is bucking, backfire's and running lean

Hey guys,

So since recently my FD has started bucking quite heavily whenever I go off light throttle. Another thing that is starting to get worse and a bit annoying is the backfiring whenever I go off throttle at low RPM, I'm not sure this is normal but there really is a lot of popping in the exhaust.

And lastly, I have replaced my O2 sensor with a new one, old one was completely white, which I believe indicates a lean mixture.

Now my FD is a 95 JDM, it is completely stock except for a Catback. Could these issues be related and if so what might be the cause? Other than these issues the car runs and drives completely fine.

Aad,
Old 05-09-11, 10:58 AM
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Aad
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Okay after a bit more searching, I think all this could be explained by the TPS being out of spec?
Old 05-09-11, 11:03 AM
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Mr. Links

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Did this just start out of the blue or did this happen after changing your catback (or some other work done on the car)?
Old 05-09-11, 02:46 PM
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Aad
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It happend after i changed plugs and wires, if i recall correctly i did unplug the connector on the tps when i did this. Since then especially the backfires are gradually getting worse, i.e. more frequent.
Old 05-25-11, 03:43 AM
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Aad
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Little update, I have checked the TPS and found it was a little bit out of spec. After adjusting, the backfires and the bucking have almost completely dissapeared
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