Notices
964 Forum
Sponsored by:
Sponsored by:

static current drain on fuse #1 and #12

 
Old 02-22-2011, 12:35 PM
  #1  
PChar
User
Thread Starter
 
PChar's Avatar
 
Join Date: Feb 2011
Location: Chester County, PA
Posts: 434
Default static current drain on fuse #1 and #12

Good morning all, as a newb to Rennlist. I would like to thank everyone for their valuable input before hand.
I have just bought a 1992 C2 from Florida, and it appears thta the car was not up to par per my first estimation. I am experiencing a significant static current drain on the battery (approx 140mh). I followed the procedure in the Bentley and ruled out the battery and the alternator. Now when I pulled the fuses I noticed a drop of 20mh at fuse #1 and an additional 20mh at fuse #12.
these 2 circuit controle #1: LH & RH front blower fan
and circuit #12: central locking, warning flasher.

What should I look for other than leaving the fuse off.... a relay maybe or faulty blower motor ???

I am also concern that the remaining 90mh will also drain my battery overnight.

thanks
Stephane
PChar is offline  
Old 02-22-2011, 12:51 PM
  #2  
Rocket Rob
IHI KING!
Rennlist Member

 
Rocket Rob's Avatar
 
Join Date: Aug 2001
Location: Nashua, New Hampshire, USA
Posts: 12,600
Default

Yes, you should be looking for 40-60 milliamps for a base load. If you are drawing more, then you will run your battery down. The CCU is powered by fuse #1. Try removing the CCU and retest the load. My CCU was bad and was pulling 450 ma. After repairing the CCU, my car draws 40ma.

https://rennlist.com/forums/964-foru...e-to-look.html
https://rennlist.com/forums/964-foru...see-video.html

Good luck on finding the problem.
Rocket Rob is online now  
Old 02-22-2011, 02:27 PM
  #3  
PChar
User
Thread Starter
 
PChar's Avatar
 
Join Date: Feb 2011
Location: Chester County, PA
Posts: 434
Default

thanks Rob for the info. forgive me my ignorance, but what and where is the CCU??? Is it the same as the ECU?

Thanks
PChar is offline  
Old 02-22-2011, 02:31 PM
  #4  
Rocket Rob
IHI KING!
Rennlist Member

 
Rocket Rob's Avatar
 
Join Date: Aug 2001
Location: Nashua, New Hampshire, USA
Posts: 12,600
Default

Sorry, CCU = Climate Control Unit. Its the unit that controls the heating/air conditioning.

You can remove it with standard stereo tools. I bought mine at Radio Shack.

Rocket Rob is online now  
Old 02-23-2011, 01:19 AM
  #5  
milutintin
User
 
Join Date: Sep 2010
Location: Spain
Posts: 81
Default

If the CCU is defective you will have to change a transsistor. More info about the CCU in here:

http://privat.bluezone.no/toreb2000/ccurepair.html
milutintin is offline  
Old 02-23-2011, 02:12 AM
  #6  
Shamus964
User
 
Shamus964's Avatar
 
Join Date: Jun 2009
Location: Oregon
Posts: 546
Default

Do you by any chance have a heater bypass tube rather than the rear blower fan?
Shamus964 is offline  
Old 02-24-2011, 10:07 AM
  #7  
PChar
User
Thread Starter
 
PChar's Avatar
 
Join Date: Feb 2011
Location: Chester County, PA
Posts: 434
Default

Originally Posted by milutintin View Post
If the CCU is defective you will have to change a transsistor. More info about the CCU in here:

http://privat.bluezone.no/toreb2000/ccurepair.html
Thanks a lot milutintin, that's great information.

Shamus, I do not have a CF bypass heater tube yet, but interesting enough I have one in order from Rennline, should arrive today or tomorrow.
Is there something I should know about the install of this carbon fiber tube/pipe?? Fabspeed has a video install of this part and just mention to zip-tie the connectors together to the fuel rail with no other mods.

Thanks
PChar is offline  
Old 02-24-2011, 06:41 PM
  #8  
Frank 993 C4S
Addict
Rennlist Member

 
Frank 993 C4S's Avatar
 
Join Date: Mar 2003
Location: NY Tri-State
Posts: 6,699
Default

Originally Posted by PChar View Post
Is there something I should know about the install of this carbon fiber tube/pipe?? Fabspeed has a video install of this part and just mention to zip-tie the connectors together to the fuel rail with no other mods.
Assuming you are looking at the heater fan removal, it's a little more complicated than that. Some good info:

http://www.porsche964.co.uk/technical/noheater.htm
Frank 993 C4S is offline  

Thread Tools
Search this Thread

Contact Us - About Us - 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.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: