Rep Power: 0

Alright so yesterday I put a new aftermarket exhaust on my car as I've done a few times. It's been driving fine and nothing wrong up until today when I was driving on the highway. My CEL, Battery light came on and my speedometer died all at the same time. This is unusual because I've done nothing electrical with my car and that seems to be the problem that's happening. If anyone has any idea why it would do this please inform me. thanks guys.

 
Rep Power: 811

check to see if your battery clamps are tight and your ground wires are tight and not corroded. alternator may have died also and drained the battery causing the car to shut down. check your battery voltage with a multimeter. with car off, should be around 12.6v and with car on, 14.2v but also get it load tested at an auto parts store to be sure. most place will check the batt and alt for free.

 
Rep Power: 0

Battery was dead and had to buy a new one. However all problems still exist

 
Rep Power: 0

answer = bad alternator

 
Rep Power: 0

Very easy to change out yourself and you'll save lots of $$$ !!

Had same problem a few months back

 
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Diy for alt removal?

 
Rep Power: 236

same prob as u.... mine currently sits at an alt shop...lol i expect around 250 for a new one.

 
Rep Power: 0

no way, get out to a junkyard and yank one out. dont get ripped off like i did

 
Rep Power: 0

Im having this same problem. right after i put on a megan header on my car
the battery light and check engine light came on and speedometer wont work!
I tried seeing what code came up with a code reader, but the code reader has no power goiong to it?? Im kind of banging my head. Im pretty sure I have a bad alternator, but is it possible I fried my ECU as well?