Q: Hi there i have a 2004 ford taurus ses 24 valve dohc the car will run for about 30 minutes than it will shut off had the alternate

asked by on October 18, 2017

Car will run for a little while like 40 minutes than after turning it off the battery is dead and will not start just the other day it turned off while driving for a few miles while i was at a stop and it had been ideling for a few minutes battery tested good alternator tested good voltage regulator tested bad but isnt the voltage regulator in the alternator ? Starting motor also tested bad could that drain a fully charged battery that fast ?

My car has 180000 miles.
My car has an automatic transmission.

Hi Craig. Thanks for stopping by tonight. If your battery is draining quickly, it’s likely one of two issues. Either you have some loose or faulty charging system connections (from the alternator to the battery) or you have a parasitic battery drain. This occurs when an accessory or vehicle system that is powered by the battery when the engine is not started, but switches to the alternator after, has an open or stuck relay or fuse. This will cause the component to continually draw power even if the key is not in the ignition. The voltage regulator is a separate component that is a part of the alternator system, but if it has failed, this could also be the source of your problem. It might be best to have a professional mechanic come to your location and complete a battery will not hold a charge inspection, so they can pinpoint the root source of this problem.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

2004 acura mdx timing belt service: what components do you recommend replacing

Hello, thank you for writing in. When changing the timing belt, it is often recommended to change the water pump, chain tensioner, and the gaskets involved with accessing the timing chain. The price is vary greatly depending on what kind...

Unplugged output shaft speed sensor to look at possible shotty wiring, plugged it back in, and car shifts worse than before

When you disconnected and reinstalled sensor connector you may have lost most if not all of the connection and may need to remove and clean out connections and new sensor pins with an electronics cleaner and apply a small amount...

My 2008 escape 2.3l 4wd needs an engine so can I use and engine out of a front wheel drive escape even though mine is 4 wheel driv

Hi there. Unfortunately, our mobile mechanics do not offer engine swap services in North America, so we're really not best suited to answer this question for you. The best advice we can offer is for you to contact a local...

Related articles

The Best Used Cars to Buy If You Love Road Trips
If If you love to travel, comfort is very important in a vehicle. You want a nice, quiet ride, comfortable seating, and enough room. We have evaluated several used vehicles, and narrowed our favorite road trip vehicles down to the...
The Best Used Cars to Buy If You're an Undercover Cop
If If you're an undercover cop, when you choose a used vehicle, your main purpose is to look like anything but a cop. That means, of course, that an unmarked Crown Victoria is probably not the wisest choice. We’ve...
The Best Used Cars to Buy If You’re a Caterer
If If you are in the catering business, you need a reliable vehicle that will provide you with what you need to transport your food, linens, and other supplies. Generally speaking, you're better off buying gently used, because you will...