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Old 04-08-2019, 09:49 AM   #1
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2004 focus 2.3 pzev electrical issue

got a constant flicker on all lights in an ext of the car engine ground alternator ground starter ground an battery to chassis. Ground all corrosion free can't find the source of the problem


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Old 04-08-2019, 07:40 PM   #2
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Whats the alternator putting out? Possibly add a couple more grounds? What'd you do to get this flickering?
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Old 04-08-2019, 11:35 PM   #3
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Car is practically new with 50,000 mile only thing that I've done was spark plugs because the original owner had 3 different brand plugs in it... But the electrical issue doesn't seem to be related to that alternator output not sure but as far as I've been reading from the battery reading I start everyday at around 12.7v once I get to work it's up to 14v
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Old 04-09-2019, 01:32 AM   #4
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Quote:
Originally Posted by Drew0427 View Post
got a constant flicker on all lights in an ext of the car engine ground alternator ground starter ground an battery to chassis. Ground all corrosion free can't find the source of the problem
It would help you TO HELP US if you took the time to give a better description of your car engine-electrical problems with better use of descriptions and punctuation in your post.

I am not the punctuation or grammar police. Your OP words are English broken, and very hard to read. If you want my help, please give us your time to explain what is going on... with some added details of your car situation.

If you re-read your OP you might see or understand my confusion.

Please take some time to re-post with better descriptions of what you have done and/or what the car maintenance history is. I will return-post with the same time, or more time, to help you further.

In the mean time... Please take your car to a local car part store to have them do a (free) electrical system check. When doing this test, please make sure your car lights and AC systems are turned-on full blast.

My first guess is that your Alt is dying, or on its' way out. Other ideas tho. TBD.

Gd Luck
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Last edited by Marde; 04-09-2019 at 01:37 AM.
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Old 04-09-2019, 07:38 AM   #5
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Alright so I bought the car about a month ago with 48,000 miles and it's been garage kept all it's life till now. Everything on the car works an after a bit of visual inspection there is no signs of wear on the electrical components in the car but as previously stated the lights on the interior and exterior of the car flicker while at idle once the car is in motion the flickering goes away. I understand the idea the alternator could be going but under load, example(radio on high,heater blowing, windshield wiper on) there is no flicker at any point untill I'm at a light idleing. Now there is no dimming of the lights an I've tested my battery on many occasions in which I start each day at 12.7v an it goes up to 14v so there is no point in which the battery has dropped below that so that also makes it seem that the alternator should be just fine.

I should include I've had alternator fail in the past on a few other vehicles , again this car (2004 Ford focus) it is old but in like new condition. There should be no issue with the alternator.

Hope this description is a bit easier to rap your minds around, I will work on my Grammer an punctuation.

Last edited by Drew0427; 04-09-2019 at 07:42 AM.
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Old 04-09-2019, 08:09 AM   #6
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Have you load tested the battery? The battery is like a capactor, it smooths out the ups and downs from the alternator. If the lights are flickerin at idle I would either say the battery is on it's way out, or possibly the positive terminal on the alternator has corrosion and the voltage is not making it to the battery smoothly. (Just my 2 cents worth)
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Old 04-09-2019, 01:42 PM   #7
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Got the alt an battery checked an found out my battery was 10 years old well easy mistake that I clearly overlooked
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Old 04-09-2019, 11:16 PM   #8
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Quote:
Originally Posted by Drew0427 View Post
Got the alt an battery checked an found out my battery was 10 years old well easy mistake that I clearly overlooked
Good that it was found.

Next? Did you replace the battery? Did you ask them to perform the same test/s after the battery was replaced? Do you have any light flickering after the new battery?

The new battery may not be the final cure. Let us know please.

Cheers!
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Old 04-10-2019, 05:49 AM   #9
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Great you figured it out......not good for the alternator thou......
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Old 04-10-2019, 05:55 AM   #10
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Had a '00 zx3 that had pulsing at idle, it was the voltage regulator that is built into the alt

the alt was working just fine, the voltage regulator simply couldn't put out a solid current anymore at idle, so all the lights pulsed at idle
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