Volvo S80 A performance sedan that offers top notch luxury, outstanding handling and so much more.

Battery Dead and Rough Idle

  #1  
Old 01-04-2013, 05:55 PM
Junior Member
Thread Starter
Join Date: May 2012
Posts: 7
Red face Battery Dead and Rough Idle

Hello guys, this past week I've had a dead battery every morning and had to jump-start my car to get it going. At first I found the glove compartment switch was broken which caused the light to stay on overnight. But now it keeps dying after I took out the bulb. Also, when I jump-start the engine gives me a rough idle, everything else works fine though, the windows work at normal rate and everything, however when I use anything electrical, the dash light dims. The battery is 1 year old. Another problem is the mpg use to mark 24.8 and lately its been going down to 23.4. What could this be?
 

Last edited by lolxluigi; 01-04-2013 at 06:07 PM.
  #2  
Old 01-04-2013, 06:31 PM
rspi's Avatar
Administrator
Join Date: Mar 2009
Location: Albuquerque, NM
Posts: 15,762
Default

To many problems in one thread.

If the battery is low is may be bad. Bad batteries can be a pain and yes a one year old battery can be bad. Take it to the auto parts store and have them test it. Don't tell them how old it is. Winter is the time that all weak batteries kick the bucket.

How far do you usually drive per day? Short trips can be the cause. A battery needs a good 30+ minutes every few days to stay charged up.

As for the gas mileage, if you are in a winter climate your mileage will be less. Cold weather uses more gas.
 
  #3  
Old 01-04-2013, 06:38 PM
Junior Member
Thread Starter
Join Date: May 2012
Posts: 7
Default

You sir are awesome, and yes these are just some of the few problems I have on the car. I usually drive about 30 minutes a day but due to vacations I barley have the car running. On occasions I drive up to the city and have the car running about 1 hour but that's only been once every two weeks. I was also suspecting if the alternator could be the cause?
 
  #4  
Old 01-04-2013, 06:42 PM
rspi's Avatar
Administrator
Join Date: Mar 2009
Location: Albuquerque, NM
Posts: 15,762
Default

If the car runs fine after you jump it the alternator is probably fine.

As for the rough idle, do you have a CEL? Maybe you need new plugs or coil packs. How many miles and what year is the car?
 
  #5  
Old 01-04-2013, 06:55 PM
Junior Member
Thread Starter
Join Date: May 2012
Posts: 7
Default

I changed the ignition coils a few months back but not the spark plugs the car is a 2000 with 160000 miles
 
  #6  
Old 01-04-2013, 07:09 PM
rspi's Avatar
Administrator
Join Date: Mar 2009
Location: Albuquerque, NM
Posts: 15,762
Default

Check the plugs. They may need to be replaced every 30,000 miles.
 
  #7  
Old 01-04-2013, 07:15 PM
Junior Member
Thread Starter
Join Date: May 2012
Posts: 7
Default

will do, I also read volvo plugs are the recommended plugs I put on them is this true?
 
  #8  
Old 01-04-2013, 07:22 PM
rspi's Avatar
Administrator
Join Date: Mar 2009
Location: Albuquerque, NM
Posts: 15,762
Default

Yes, that's all I use. NGK's run well in the 960's as well.
 
  #9  
Old 01-05-2013, 09:47 AM
Senior Member
Join Date: Apr 2006
Location: Lake Jackson, tx
Posts: 120
Default

I would still check the alternator. If you have lights that are dimming it doesn't sound like it's putting out the rated amps. If you have an alternator/starter repair shop that would be my choice before a rebuilt from the chain stores. The regulator on the alternator seems to be the weak link.Low voltage will cause all kinds of running problems.
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
rosesforlily
Volvo 850
3
11-05-2009 09:23 AM
yank50
Volvo S80
5
03-14-2009 11:15 AM
cmercon
Volvo 850
3
02-02-2009 02:15 AM
BigAdam
Volvo 850
0
08-24-2008 03:18 AM
proudmonkey
Volvo 240, 740 & 940
1
05-20-2005 10:49 AM


Thread Tools
Search this Thread
Quick Reply: Battery Dead and Rough Idle


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.