home register FAQ memberlist calendar

Go Back   Turbobricks Forums > Mechanical > maintenance & nonperformance

Reply
 
Thread Tools Display Modes
Old 11-16-2022, 07:13 PM   #1
JaimeMedina
Newbie
 
JaimeMedina's Avatar
 
Join Date: Aug 2021
Location: Charlotte, NC
Default '95 940 Parasitic Draw

Hey everyone, I've been having an issue with the battery draining on my 940. I got to pulling fuses and tracked the issue down to fuse 14. I suspect the culprit is the ambient temp sensor which broke off my car a while back. However, after pulling fuse 14 the draw only dropped from 350 milliamps to 100 milliamps. I pulled the rest of the fuses to see if I could get the draw to 0 but to no avail. Is 100 milliamps a typical amount of draw on these cars?
JaimeMedina is offline   Reply With Quote
Old 11-16-2022, 08:11 PM   #2
James M
Bored member
 
James M's Avatar
 
Join Date: May 2017
Location: Davis, CA
Default

Realistically you want a little lower, but what is your testing procedure? Do you have the door switches clamped and let everything turn all the way off? Not sure how many modules a late 940 has but it's worth making sure everything is off.
James M is offline   Reply With Quote
Old 11-16-2022, 10:48 PM   #3
dl242gt
Old and boxy but good.
 
dl242gt's Avatar
 
Join Date: Jun 2002
Location: S NJ, a suburb of Phila.
Default

Disconnect your stereo to eliminate that power off draw. That will take away a chunk of the 100ma that is still a draw.
__________________
Dave,
1982 242 turbo. 338k miles. MVP coilovers and 3" exhaust. Flowed 405 with a V15. Cossie turbine housing with upgraded compressor housing. 90+, IPD remote oil filter. Some other goodness, too. Been lots of fun over 25 years. Restored in 2k. Now ready for a 2nd restoration.

1993 245 Classic, 440k miles, enem V15. IPD bars and chassis braces. Simons sport exhaust from Scandix. sbabbs ezk chip. Been a good road warrior. Genuine Volvo rebuilt leaky M47.
dl242gt is offline   Reply With Quote
Old 11-17-2022, 07:07 PM   #4
go240go
Board Member
 
Join Date: Mar 2009
Location: Los Angeles
Default

Not sure about a 940, but my 240 had an issue with the light in the glove box not turning off - broken plastic on the glove box door prevented the light switch from being fully depressed when closed.
__________________
1987 245DL
go240go is offline   Reply With Quote
Old 11-17-2022, 08:49 PM   #5
bobxyz
Board Member
 
bobxyz's Avatar
 
Join Date: Aug 2014
Location: Boulder CO
Default

Quote:
Originally Posted by JaimeMedina View Post
tracked the issue down to fuse 14
If I follow the wiring diagram correctly, that fuse should only have power when the ignition switch is on. Does your radio/wipers/cigarette lighter socket/horn work with key out? If so, your ignition switch is bad. There was a recent thread about this same issue, and junk aftermarket switches.
bobxyz is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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 On

Forum Jump


All times are GMT -4. The time now is 10:33 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, vBulletin Solutions Inc.