Vehicle: 1998 Mercury Mountaineer AWD 5.0L 8cyl, 116,000 mi. In my possession only for a few months. Previous owner cannot be reached (overseas).
1-For about the first 5 minutes, exhaust condensation is visible in the evening air when other cars' exhaust is invisible in ambient air (~55 F). Exhaust is pale white in color, almost like steam. There is water discharged from the tail pipe the moment the car is started.
2-OBD-II P0133 [O2 Sensor Circuit Slow Response (Bank 1 Sensor 1)] & P0430 [Catalyst System Efficiency Below Threshold (Bank 2)] intermittently. Most of the time I get one or the other, but not both. Usually I only get these under moderate throttle load while going uphill.
note: I thought it was due to a hole in the exhaust line so I had the pipe, muffler, and resonator replaced.
3-Under hard acceleration, I can "hear" the motor as if there is sound being leaked somewhere. This sound is separate and distinguishable from the motor signature from the motor compartment.
2006-10-17
12:26:46
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6 answers
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asked by
moussa_guillaume
1
in
Maintenance & Repairs