 HELP!!!, Something weird going on...(video) |
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 Feb 21, 2006 - 1:08 AM
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 Enthusiast  Joined Jul 19, '04 From Los Angeles, CA Currently Offline Reputation: 2 (100%)  |
So the other day I was driving in traffic for 3 hours in the rain, when I noticed that my battery light was coming on. I eventually pull over and check everything out under the hood, everything seems to be ok. Then when I go to start the car it barely turns over, but it starts. I NOTICE THAT WHEN I TRY TO HOLD THE RPMS AT A CONSTANT RATE OVER 2000 RMP, THE CAR SEEMS TO DROP DOWN ABOUT 200 RPM THEN GO BACK UP (SEE VIDEO).
Today I went to autozone and they hooked me up to their electrical diagnostics (as I had suspected my alternator was bad), and they found that I was putting out alright voltage, but I was only making .8 amps(!), so I replaced my alt, and my car is still doing the same thing with the reving. WHATS GOING ON HERE? Sorry for the bad quality (cell phone) 3gpp, right click, save as. Should play with quicktime or realplayer. http://www30.websamba.com/aptapathy/02-20-06_1450.3gp |
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Feb 21, 2006 - 1:35 AM
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Enthusiast Joined Dec 9, '05 From Long Beach Currently Offline Reputation: 1 (100%) |
hmmmmm........... resetting the ecu or replacing the battery is my best bet, how old is the battery?
-------------------- Is this good enuff 4 ya? :D
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Feb 21, 2006 - 2:05 AM
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Enthusiast Joined Jul 19, '04 From Los Angeles, CA Currently Offline Reputation: 2 (100%) |
QUOTE(XS4lv1Truch0x @ Feb 20, 2006 - 10:35 PM) [snapback]397045[/snapback] hmmmmm........... resetting the ecu or replacing the battery is my best bet, how old is the battery? Tried resetting ecu many times, checked all fuses, battery is 3 months old and is an optima. |
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Feb 21, 2006 - 2:35 AM
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 Enthusiast Joined Aug 31, '02 From Philadelphia, PA Currently Offline Reputation: 8 (100%) |
have your ecu checked for codes. dont reset it.
-------------------- 15PSI - 30MPG - Megasquirt Tuned
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Feb 21, 2006 - 2:57 AM
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 Enthusiast Joined Nov 4, '02 From Hecho en la Republica Dominicana/Living in NJ Currently Offline Reputation: 0 (0%) |
DID you check your connections make sure nothing is lose or rusted or has acid build up... .check your coil and rotor ...
never rest your ecu untill you have fixed the problem .. cause it will only come back ... -------------------- |
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Feb 21, 2006 - 5:35 PM
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Enthusiast Joined Jul 19, '04 From Los Angeles, CA Currently Offline Reputation: 2 (100%) |
QUOTE(macavely @ Feb 20, 2006 - 11:57 PM) [snapback]397088[/snapback] DID you check your connections make sure nothing is lose or rusted or has acid build up... .check your coil and rotor ... never rest your ecu untill you have fixed the problem .. cause it will only come back ... Well the thing is i never got a CEL, so i assumed there is no code. I'm pretty sure all the obvious connections are solid. You mean just check the connections for the coil and rotor? Or can I test it somehow to make sure its working properly? |
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Feb 22, 2006 - 7:04 PM
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Enthusiast Joined Jul 19, '04 From Los Angeles, CA Currently Offline Reputation: 2 (100%) |
bump
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Feb 23, 2006 - 2:36 AM
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Enthusiast Joined Aug 31, '02 From Philadelphia, PA Currently Offline Reputation: 8 (100%) |
the light dosnt always come on . the ecu has 2 types of codes, soft codes, that just get stored inside the ecu, and hard codes that throw the light and stay on.
dont reset the ecu, and have the codes checked. if its obd1, you can check them on your own, but if its obd2 you can take it to autozone and have them pull the codes with a reader for free. This post has been edited by lagos: Feb 23, 2006 - 2:37 AM -------------------- 15PSI - 30MPG - Megasquirt Tuned
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Feb 23, 2006 - 2:50 AM
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Enthusiast Joined Jan 17, '04 From Illinois Currently Offline Reputation: 0 (0%) |
running on a bad alternator for long can fry the battery no matter how new it is. My suspicion is that you need a new battery.
-------------------- QUOTE(lagos @ Jul 10, 2006 - 1:55 PM) [snapback]454118[/snapback] i know your trying to do the right thing for your motor, but this is one of those times where you should just trust the guys who have had their swaps for a while and have done a ton of research into this. |
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Feb 23, 2006 - 5:41 PM
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Enthusiast Joined Jan 6, '06 From Toronto, Canada Currently Offline Reputation: 0 (0%) |
I read somewhere that a battery light is a sign that your alternator is going out and not your battery! Manufacturers do this on purpose because if they had a picture of an alternator most people would not know what it is!
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