[Mystake]

(05-23-2010, 09:50 AM)hardk0re Wrote: ANY exhaust leak BEFORE your first O2 sensor can have catastrophic effects on your air fuel readings and set you up for some lean conditions causing detonation or (knock). Get your exhaust fixed up ASAP, check the PCV valves, clean the maf with some maf cleaner, and check the plugs to make sure they are not fouled up. Make sure you've got the right plugs, motorcraft platinums. If its any other plug throw it away and pickup some motorcraft ones. also check the wires going into the coil pack, as those fail often causing lost of spark in some occasions.


That said knock really only occurs under load, so are you WOT when the knock occurs or just cruising? Does it sound just like a knock or bang, or is it like marbles in a tin can?

the leak is at the muffler ,not before the O2 sensor.
PCV valve was just recently dealer replaced,
MAF was cleaned by dealership too
i just changed the plugs and wires myself. I went with NGK iridium afaik and bosch wires and I don't plan on changing them unless the plugs are the fault.

the noise the car makes is a bit of a bang, sometimes its silent but the engine stops responding for a bit. as if i had let off the gas pedal.
its happened while cruising and while under load. More frequently under load though.


the marbles in a tin can... no engine tick if that's where you're going.

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(05-23-2010, 09:21 AM)meford4u Wrote: Any ideas? Maybe not posting on the internet that you were travelling at 130km/hr would be a good start.

First hit on the new site whoohoo.

Oh no 130km/h... and I'm the slow guy on the highway.