just put in new ign.coil ran good for a day now sounds really
rough with chattering from alt.
Ford Q&AAsk Your Question
2003 Ford Taurus Question: will a noisy possibly faulty alt. cause stalling and engine lite to go on?
Answer #1csubak30 November 01, 2012, 09:20Master
The pulley on the alternator has probably got a bad bearing. That would be the chattering. If the alternator itself is going bad, you will get a multitude of electrical failures all over the vechicle going in and out. Get alternator tested but with the bad pulley you will probably have to replace it anyway.
Answer #2Greg's Orange Auto (13724 Answers) , Orange, CA - (714) 361-9386globalhelper November 01, 2012, 13:06Master
have codes scanned to see if they pertain to low voltage issues