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| Ford Focus Technical Chat This section is for technical discussions relating to general maintenance, electrical issues, engine trouble, and recalls. |
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#1 |
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Focus Jr. Enthusiast
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03 ford focus SVT
so i have a focus SVT and i have noticed that there is a whining noise. very annoying at idle and with some throttle.
tonight my battery light turned on and off a few times while driving, its off now but i was wondering it the whining noise is from the alternator which would explain the battery light turning on? anybody have any suggestions as to what the whining noise. and a reason for the battery light turning on and off. thanks |
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#4 |
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Focus Jr. Enthusiast
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I have a diablo sport. and its the voltage reading goes between 11.5V and 12.9V while running. also the RPM's at idle when at normal temp are at just about 1250. my load % is around 22.0%. Ill load test the battery and check the output voltage from the alternator tomorrow at work.
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#5 |
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Captain TMI
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You're getting good voltage because the problem is the bearings, not the brushes. Don't worry though, eventually it will lock up. I suggest taking it to a local rebuilder instead of purchasing a new/rebuilt alternator from a parts store. The price difference should be surprising. I paid $40 to have mine rebuilt.
I'd also check the idler and tensioner pulleys while the serpentine belt is off, or just simply buy a couple of replacement pulleys. These should be less than $10, maybe $20 if you get a dealer part.
__________________
---The Complete How-To Archive-- Moderating Tech Chat and Duratec Chat, let me know if I can help. |
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#6 |
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Focus Jr. Enthusiast
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i tested my alternator voltage and it came to 13.5V with everything off. with everything on the voltage came to a little over 12V. I put a screw driver to the alternator and my ear it is making the whining noise bad. I also did the same to the power steering pump, nothing came up there. my engine is being very sluggish. im thinking to due to a pulley. maybe my alternator or power steering or water pump? I'd like to get my alternator rebuilt but its my DD and i cant have it down for any day except sunday. im not sure what to do.
also if i take my serpentine belt off should i have any resistance turning any of the pulleys? |
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#7 |
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Focus Addict
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I am having the same problem. And I've noticed my car being slower too. Do you think that it is because of the alternator, or could it because of the power steering or water pump? How would I check for those two things?
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My 2002 ZX3 with tasteful mods is for sale! PM me if interested! |
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#8 |
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Focus Addict
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I agree about the alternator bearings being a likely culprit to your noise, but your idle is too high.
__________________
03 Infra-red SVTF 3 door (build # 943) with minor mods "Its easier to pull the trigger than play guitar. Easier to destroy than to create." -Desperado |
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#9 |
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Focus Jr. Enthusiast
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I'm thinking my idle is high because the engine is trying to stay running. or to keep the voltage up?. I noticed my engine load was around 22% (sometimes higher) which its usually at 16/17%
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#10 |
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Focus Jr. Enthusiast
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I agree with whynotthinkwhynot about having the alternator rebuilt, but unless you can find a mechanic willing to work on a Sunday, your best bet would probably be to just bite the bullet and buy an alternator and install it yourself. I'd also test the battery.
The screwdriver thing was a good idea, I've always used a piece of PVC pipe though. |
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#11 | |
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Captain TMI
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Quote:
__________________
---The Complete How-To Archive-- Moderating Tech Chat and Duratec Chat, let me know if I can help. |
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