Question about 2007 Cadillac DTS Sedan
Slow crank more often than not. Battery is draining. Nothing connected anywhere. No courtesy lights stay on. Voltage indicates >13.5 V when engine is running. Already replaced 3 year old battery that really wasn't probably the issue, but at the store it had only 70% charge. New battery takes a 10A charge for a long time using automatic charger, so it's draining down too.
Change the alternator is the next step here their are no user servicable parts here ,most likely cause is a diode down causing the alternator to discharge the battery ,disconnect the alternator on the large terminal and see if the battery drains
Posted on Nov 21, 2013
If the diodes are bad in your altenator this will happen .even though it still charges . you can take it to a parts store to check this for free .unless your mechanic is a buddy and will do you the favour .
Posted on Nov 21, 2013
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Posted on Jan 02, 2017
SOURCE: car isn't starting all the
Check if this model has a start injector on it. A start injector is a small injector located on the throttle body that basically primes the system for starting. If you have one and it has malfunctioned, this could be your problem.
Posted on Jul 24, 2008
SOURCE: Drained battery
It's a small draw if it takes that long, I would start by checking the under hood lamp, they have a mercury switch which if it is not on level ground have tendency to stay on, the switches also plain and simple fail and keep the light on. Same holds true if it has a trunk lamp, and the third is the glove box lamp. The best was to check these of course is in the dark.
Typically you would remove one of the battery cables use an Ammeter in line and this would give you an amp reading if there is a draw an how much, once you have this, you can pull fuses until the draw stops. which ever fuse or disconnected item will now be exposed.
Posted on Apr 15, 2009
SOURCE: cadillac 2004 cts, wont start
i had a 2003 ctc that did the same thing, it wouldn't start or would make a clicking sound and about 1 mth after the problem started aND mechanics could not find a problem my car caught on fire and burned completely from something under the right side of the hood. i had just parked the car and got out, it happened really fast. the fire chief said the cause was unknown????
now i have a 2004 cts and i'm having the same problem!!!!!!!!!!!!!!! has anyone else had this happen???? please be cautious if your cts is doing this, during the fire my doors locked and had to be pried into by fire chief.
Posted on Aug 22, 2009
Check the cells on the battery, if they are dry or not full of water then they can go bad. That would incorporate the battery to keep dying. When you start the car it feeds off the alternator, and then starts to die.
Check your charging system, test the battery.
Posted on Sep 26, 2009
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