i have two problems on my 2005 mazda tribute. when i turn on the ac or the heater there's a noise from engine compartment. and i recently changed the spark plugs and two of them had oil on them.
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2005 Mazda Tribute
Question: oil leak and noise from ac
Answer #1mastertech6371 November 12, 2010, 21:07Master
have your blower motor checked for noise. it is under the right side of the dash. under the hood?? maybe ac compressor if you have it in defrost mode.
Answer #2DaveJHM November 12, 2010, 21:31Master
What type of noise from the engine compartment? If it is an initial click or clunk, it could be the A/C compressor clutch activating the compressor initially. It could be a noise of continual operation and cycling. If it squeaks or rattles continually, it could be excessive drag from a compressor that is wearing out. Hard to tell-will need to get a first hand opinion in the field.
As far as the oil getting on the plugs -- how many miles and what is the history on the engine maintenance? If you have oil leaking past the rings, you could have oil starting to get onto the plugs. Did the plugs misfire from the oil? Were they oil soaked, or just blackened electrodes?
Replypark rat, November 13, 2010, 12:31Rookie
The noise from the a/c is a continous roaring noise but not to loud and my vehicle has 242,000. Two of the plugs had some oil on them and no they didn't misfire. It drives smooth and ideals good.
ReplyDaveJHM, November 13, 2010, 18:59Master
Wow, that is quite a few miles for 5-6 years! I would say it is very possible your compressor has wear. The clutch probably has excessive clearance and the bearing in the pulley probably has wear, as the shaft of the compressor likely has. My suggestion would be to keep an eye on it (an ear...) and be increasingly concerned as noise progresses, or changes.
As far as the oil...really, I'm not terribly surprised at 242,000 miles! Watch your oil level and make sure you are not losing (consuming) too much, if any. Keep in mind that Ford and Mazda in 2005 said a quart consumed every 900 miles is ok. Now they say a quart every 1,500 miles is ok. You did not mention consumption, but I am making that assumption with oil on the plugs. Again, warning signs of eventual wear out, but who could complain with that mileage! Keep up the good maintenance as you must be doing and I'm certain you will enjoy many more miles regardless.