Go Back   Volvo Forums - Volvo Enthusiasts Forum > Volvo Vehicles > Volvo 850
Sign in using an external account
Register Forgot Password?
Search

Welcome to Volvo Forums!
Welcome to Volvo Forums,

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to start new topics, reply to conversations, privately message other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join Volvo Forums today!


Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 02-25-2009, 04:02 PM
Junior Member
 
Join Date: Jun 2007
Location: Newmarket, Ontario
Posts: 10
Default Dimming Dash Lights; 'ABS' & 'Tracs Off' Lights on

BOTH problems ALL started this past Sunday.


-------------PROBLEM #1
* While driving on highway, ABS & TRAC OFF warning lights came on in the dash & stayed on until car shut off.

(NOTE: Today, my mechanic got the ABS & TRACS OFF codes to come up on his diagnositic machine, but he could not read the fault details)


------------------------------------------------------------


-------------PROBLEM #2
* All DASH LIGHTS started dimming intermittently while driving; or when driving at low speeds while switching between Reverse and Drive.
* RADIO began shutting off for several minutes at a time.
* High & LOW BEAMS would dim as well.
* When braking, BULB BURNT OUT light now comes on.
* TURN SIGNAL sounds normal when waiting to turn; clicks faster when using gas to make turn.

(NOTE: Today, my mechanic tested everything... including the alternator that was recently replaced a few weeks ago, and the voltage was fine.)


What is going on? Any help would be greatly appreciated!!
__________________
Thanks,
Matt

Reply With Quote
  #2  
Old 02-25-2009, 06:17 PM
Member
 
Join Date: Oct 2008
Posts: 38
Default

I have the same problem and I cant figure it. The alt. is good, the battery is good, but I will be driving and my radio shuts off, lights dim, and the engine dies. Any ideas?
__________________
Turbo Functions
Reply With Quote
  #3  
Old 02-25-2009, 08:15 PM
tech's Avatar
Administrator
 
Join Date: Sep 2004
Location: Orlando, Florida
Posts: 36,443
Default

The 850 im not sure what year it is but the ABS module might be bad.
The lights I will bet is a bad dimmer switch.

The S70 it has to be something in the main wire from the battery.
Check the main power wire at the fuse panel.
__________________
1987 Ford mustang LX Coupe 5.0
1995 Yellow T5-RM running
1996 850 turbo
1994 N/A 5-speed wagon Purple (daughters)
Reply With Quote
  #4  
Old 02-26-2009, 08:07 AM
Junior Member
 
Join Date: Jun 2007
Location: Newmarket, Ontario
Posts: 10
Default

[QUOTE=tech;145996]The 850 im not sure what year it is but the ABS module might be bad.
The lights I will bet is a bad dimmer switch.QUOTE]

Thanks for your help.

I forgot to mention that my 850 is a 1996 model, with almost 430,000 km.

I am thinking my ABS module is done... and I am thinking of removing it and sending it to Viktor.

Q: Is there any way to make sure that it is the problem before sending it off and realizing that it is not the problem?? However, I have seen something that ~90% of the problems with the TRACS OFF and ABS lights are due to that module going south...

-----

The dimmer switch may be the problem with the lights (it had some erratic performance issues - 'flickering the lights on and off' - in the past) BUT...

Q: How come the radio shuts off at higher than 40km/h speeds, but usually turns back on when I have driven slower than that.

Hmmm....

Thanks for your help and any additional advice you may have.
__________________
Thanks,
Matt

Reply With Quote
  #5  
Old 02-26-2009, 09:57 AM
bestharry's Avatar
Senior Member
 
Join Date: Jul 2008
Location: Toronto
Posts: 455
Send a message via MSN to bestharry Send a message via Yahoo to bestharry
Default

Check for all ground wire terminals under the hood and also make sure that the second RED wire on the battery terminal is nice n' tight.
__________________
A NOVICE striving to b EXPERT on :
1994 850 Turbo with 200k kms.
1997 850 Estate with 180 kms.
Reply With Quote
  #6  
Old 02-26-2009, 03:24 PM
Junior Member
 
Join Date: Jun 2007
Location: Newmarket, Ontario
Posts: 10
Default

Quote:
Originally Posted by bestharry View Post
Check for all ground wire terminals under the hood and also make sure that the second RED wire on the battery terminal is nice n' tight.

Could you clarify those two points??

Check Ground terminals under the hood for what -----> for the ABS module??

The SECOND red wire on the battery terminal of what -----> for the dimmer switch????


Thanks again.
__________________
Thanks,
Matt

Reply With Quote
  #7  
Old 02-26-2009, 04:49 PM
JPN's Avatar
JPN JPN is offline
Super Moderator
 
Join Date: Sep 2006
Location: IPS, MA
Posts: 5,390
Default

I'm still suspecting the charging system fault; the alternator/its connections. Was it a rebuilt Bosch? I would hook up a digital multimeter across the battery, start the engine and rev it to see what readings would be observed. If you don't have a multimeter yet, it is a good investment and all you need is a $20-$30 Sears Craftsman meter.


JPN
__________________
1994 854 Turbo T5, AW50-42LE
B5234T OBD-II Compatible

2004 Honda TL-UA6 3.2-V6 J32A VTEC 6-SPD

FAA-Airframe & Powerplant Ratings
FCC-General Radiotelephone Operator
Technical Writer (English-Japanese)
HAZMAT Specialist, Master Rating
Category-1 Occupational Health Coordinator
Reply With Quote
  #8  
Old 02-27-2009, 04:35 AM
Member
 
Join Date: May 2008
Location: Australia
Posts: 98
Default

+1 jpn
__________________
850 T5R black
Reply With Quote
  #9  
Old 02-27-2009, 05:44 AM
JPN's Avatar
JPN JPN is offline
Super Moderator
 
Join Date: Sep 2006
Location: IPS, MA
Posts: 5,390
Default

+1 arzy.

FYR; see attached.


JPN
Attached Images
File Type: jpg 850 charging ckt (1).jpg (82.2 KB, 32 views)
__________________
1994 854 Turbo T5, AW50-42LE
B5234T OBD-II Compatible

2004 Honda TL-UA6 3.2-V6 J32A VTEC 6-SPD

FAA-Airframe & Powerplant Ratings
FCC-General Radiotelephone Operator
Technical Writer (English-Japanese)
HAZMAT Specialist, Master Rating
Category-1 Occupational Health Coordinator
Reply With Quote
  #10  
Old 03-12-2009, 10:25 AM
Junior Member
 
Join Date: Jun 2007
Location: Newmarket, Ontario
Posts: 10
Default

Quote:
Originally Posted by 850GLE View Post
BOTH problems ALL started this past Sunday.


-------------PROBLEM #1
* While driving on highway, ABS & TRAC OFF warning lights came on in the dash & stayed on until car shut off.

(NOTE: Today, my mechanic got the ABS & TRACS OFF codes to come up on his diagnositic machine, but he could not read the fault details)


------------------------------------------------------------


-------------PROBLEM #2
* All DASH LIGHTS started dimming intermittently while driving; or when driving at low speeds while switching between Reverse and Drive.
* RADIO began shutting off for several minutes at a time.
* High & LOW BEAMS would dim as well.
* When braking, BULB BURNT OUT light now comes on.
* TURN SIGNAL sounds normal when waiting to turn; clicks faster when using gas to make turn.

(NOTE: Today, my mechanic tested everything... including the alternator that was recently replaced a few weeks ago, and the voltage was fine.)


What is going on? Any help would be greatly appreciated!!
I had my rebuilt alternator replaced due to the voltage regulator OVERCHARGING the battery -- it was like 19.6 volts when I had it revving between 1500-2000 rpm and had as many accessories and heat on!!!

So far (one day) the NEW alternator is going fine. The lights are off the dash... EXCEPT for the 'bulb out' light bulb.

I already replaced both LOW beams when this happened, then when the regulator was replaced yesterday, I replaced both HIGH beams (because they were both burnt out)... but that light is still on. NO bulbs are burnt out on the rear, nor are any signal lights burnt out...

Any ideas on why this 'bulb out' light is still on?????

Also, the ABS & TRACS OFF lights are off now since this new alternator was installed yesterday! (hopefully they won't come back on!)

Thanks!
__________________
Thanks,
Matt

Reply With Quote
Old 03-12-2009, 10:25 AM
 
 
 
Reply

Tags
740, 850, dash, dim, dimmer, flickering, higher, light, lights, on, rpm, s70, stay, tracs, volvo


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Advertising
Featured Sponsors
Vendor Directory
Our Sponsors

All times are GMT -5. The time now is 02:12 PM.
© Internet Brands, Inc.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO ©2010, Crawlability, Inc.

This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company.
Secure Backup