- #2413 of 2476
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99 V6 Engine Noise
by gyates
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Aug 14, 2008 (6:09 pm)
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This is an unusual noise. It is coming from the front, passenger side, and is only heard when the a/c is on. Sounds almost like a "slapping" type of sound. I suspect belt or pulley related maybe?? There is no other belt type of sound though, such as a screech. Very strange. And, I do not know if related, but when the a/c is on, as the compressor cycles on, the headlights/dash lights will briefly dim. Any ideas on this unusual sound?
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- #2414 of 2476
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Re: 99 V6 Engine Noise [gyates]
by shanes56164
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Aug 15, 2008 (5:15 am)
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Replying to: gyates (Aug 14, 2008 6:09 pm)
I belive that the compressor is to blame. the sound you describe along with the time it is apparent are a dead give away, but this is only verifiable by using a mechanic stethescope to probe around the compressor and listen for when the noise is most noticable. and don't just touch the probe to the compressor body and be satisfied, touch it to the front cover of the motor, to the alternator, to the power steering, and so on. By doing this, you'll find the culprit in a hurry. as for the guages and lights dimming, I belive the alternator is being dragged down by whatever is causing the slapping noise. I'd almost bet that when you test spots with the stethescope, you'll find the noise at the compressor, which indicates it's very low on oil, or a mechanical failure. thus, causing the engine to work harder just to turn the AC compressor. a stethescope is about $20 at any parts store.
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- #2415 of 2476
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Re: 99 V6 Engine Noise [gyates]
by Mr_Shiftright HOST
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Aug 15, 2008 (8:46 am)
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Replying to: gyates (Aug 14, 2008 6:09 pm)
I'd move on this noise right away. If the AC compressor seizes, you have contaminated your entire AC system and then you have a big mess and a BIG expense.
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- #2416 of 2476
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Re: 99 V6 Engine Noise [Mr_Shiftright]
by gyates
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Aug 15, 2008 (3:05 pm)
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Replying to: Mr_Shiftright (Aug 15, 2008 8:46 am)
Thanks for responses. After listening closer, the noise seems to be an upper engine noise. Decided to check oil level. Was down about 1/2 quart. Topped off oil, and no more noise at any time now, with or without a/c on, at idle or full throttle. Plus, a/c has never given any indication of an issue with it, still blows nice and cold as it should. I will tell my daughter to listen closely for any sounds from the engine. I probably should add that the car had been sitting for about 5 days without being started when I started it up and heard this "noise".
Also, I had posted an earlier thread about an idle surge issue. After running some Lucas in the last tank of gas and pulling the negative battery cable to reset computer, no more idle surge.
Car needs to "survive" one more year of college, and then it is not my problem  Car has 124k on it now.
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- #2417 of 2476
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93 626es powersteering
by ghostface
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Aug 18, 2008 (8:32 am)
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my power steering been makin horrid noises lately cuz the fluids been leakin i guess now i was drivin and hit a bump then all of a sudden my power steering stopped workin while drivin i could turn but it felt like my car was off and it began to try to over heat. can any1 help me what should i do and will it be expensive
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- #2418 of 2476
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Re: 93 626es powersteering [ghostface]
by puttering
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Aug 19, 2008 (2:18 pm)
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Replying to: ghostface (Aug 18, 2008 8:32 am)
Well, if your power steering is leaking, and it's not a small leak that you can just keep filling up before it runs out. Then, I would suggest that you do not drive it at all. The leak came from a bump you stated, maybe a power steering hose got busted, or loose. It could also be the rack and pinion unit got damaged from a big bump too. If you have to keep useing the car, and you can't afford to fix it, then you might be able to remove the power steering belt(only if it's a seperate belt and doesn't power other important parts to) so that the pump won't be running dry, but I'm not sure if that's safe or not, so you might want to get advice from someone else about that.
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- #2419 of 2476
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99 Mazda 626 4cyl 2.0 (shifting problem)
by pdemello3
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Aug 19, 2008 (3:11 pm)
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Just started having problems . Put the car in Drive from a standing stop when I hit the gas, the engine revs but is very slow to take off,almost like its in neutral. It does take off, a bit sluggish . At higher speeds, it seems fine. Can anyone help. 
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- #2420 of 2476
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Re: rough idle [zoomnomore]
by justplayin
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Aug 22, 2008 (2:39 pm)
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Replying to: zoomnomore (Aug 04, 2008 6:49 pm)
I have 2000 626 and this just started on my car. This what I have been told to check, first is to change out the spark plugs. then also change/flush tramsmission fluid and last to make sire that your belt is tightly secured and not loose. The last thing to check is the pully's. Hope this helps
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- #2421 of 2476
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check engine light
by cbus722
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Aug 30, 2008 (6:28 pm)
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I have a 1997 Mazda 626 LX 2.0. Can't get it to pass the emission test. Code PO421 comes up and don't know what it means? Had Code PO133 on the test , but it's not coming up anymore after changing both o2 sensors,spark plugs,new spark plugs wiring. Can you tell me what Code PO421 is?
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- #2422 of 2476
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Re: Engine makes hood vibrate [gracefully]
by askperry
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Sep 11, 2008 (8:17 am)
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Replying to: gracefully (Aug 02, 2008 10:45 am)
The hood rests on rubber pads that can be adjusted by turning them. If the pads are not making contact with the hood, it will vibrate. The stick (for lack of a better term) that holds up the hood gets loose with age. You can wrap duck tape around the area that rests on the frame.
Good luck.
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