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power fluctuactes
1999 Ford Taurus

Power fluctuactes

(1999 Ford Taurus)
I just bought this car. The battery light and then check engine lights blink. I bought a new battery and that didn't fix it. Replaced the alternator. Still no fix. Replaced the battery connectors. Helped but didn't fix. After changing the connectors I didn't have to periodically have it jumped in the morning. When I step on the gas (in drive only) the lights get brighter. When I let off the battery light blinks and get brighter and the car almost feels like its gonna die sometimes.
in Logan, UT on February 24, 2011
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2 answers & 1 comment
Popular Answer
on February 24, 2011
Get back to basics on this one - the charging system still may have an issue - check the rectifier connector at the alternator and make sure the terminals are not damaged or burnt in any way. What can happen is -- radio frequency interference (RF) from the alternator can disrupt the engine processor and cause false misfires to be registered.

Check that connector first, then have an alternator ripple test performed.
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on February 24, 2011
Get back to basics on this one - the charging system still may have an issue - check the rectifier connector at the alternator and make sure the terminals are not damaged or burnt in any way. What can happen is -- radio frequency interference (RF) from the alternator can disrupt the engine processor and cause false misfires to be registered.

Check that connector first, then have an alternator ripple test performed.
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on February 24, 2011
I never had the pleasure to work on SHO the seem to be pretty rare now. But anyway the charging system is having some kind of issue, sounds like you replaced these parts yourself , you need to check the voltage for me, do you have a voltmeter? well it should be roughly 13.8 to 14.5 , Now does it crank over ok? I have seen on many fords where corrosion travels up inside the battery cables check this and all your connections . Oh you said too the check engine was blinking this is a missfire, have the codes checked asap!
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I did have the codes checked. It said there is a misfire in cylinder 1 and 5 and there is an EGR issue. This was after I had the spark plugs and EGR changed. However, these codes are the same as the ones BEFORE those changes. And I had them checked out and they said they are working. It cranks over just fine. I don't see any corrosion on the cables. I feel like there is a short somewhere?

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