Battery Drain
Thread Starter
Intermediate
Joined: Jan 2013
Posts: 44
Likes: 0
From: Millville NJ
Battery Drain
Hi all I have a 1989 corvette I have been chasing a battery drain for about a week now. the one thing I have found so far is that if I keep out the fuse for the L.C.D it dose not drain. when I put that fuse back in I can see it spark should there be power to that fuse with the car off ? any help would be great thanks
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
The LCD is powered all the time because it remembers your MPG so it can display average MPG.
Other things powered all the time are the C68 HVAC system (it remembers your temperature and function settings), the ECM (it remembers error codes and BLMs) and the radio (it remembers your station settings and the time).
Keyless entry systems are also powered all the time so they can receive the signal from the fob.
I have heard of batteries being drained by the power antenna (it gets into a mode where it never shuts off) and power seats (same scenario).
Other things powered all the time are the C68 HVAC system (it remembers your temperature and function settings), the ECM (it remembers error codes and BLMs) and the radio (it remembers your station settings and the time).
Keyless entry systems are also powered all the time so they can receive the signal from the fob.
I have heard of batteries being drained by the power antenna (it gets into a mode where it never shuts off) and power seats (same scenario).
Racer
Joined: Dec 2004
Posts: 289
Likes: 3
From: new york
The LCD is powered all the time because it remembers your MPG so it can display average MPG.
Other things powered all the time are the C68 HVAC system (it remembers your temperature and function settings), the ECM (it remembers error codes and BLMs) and the radio (it remembers your station settings and the time).
Keyless entry systems are also powered all the time so they can receive the signal from the fob.
I have heard of batteries being drained by the power antenna (it gets into a mode where it never shuts off) and power seats (same scenario).
Other things powered all the time are the C68 HVAC system (it remembers your temperature and function settings), the ECM (it remembers error codes and BLMs) and the radio (it remembers your station settings and the time).
Keyless entry systems are also powered all the time so they can receive the signal from the fob.
I have heard of batteries being drained by the power antenna (it gets into a mode where it never shuts off) and power seats (same scenario).
Le Mans Master
Joined: Aug 2007
Posts: 8,735
Likes: 412
From: WV
My 89 has a power drain also, it's only about (85-90 MA) so it's not draining the battery very fast.. I will have to start pulling fuses to track it down soon...You do know that anything up to (50 ma) drain is normal for our cars, ...
....WW
....WW
Race Director
Joined: Aug 2007
Posts: 11,889
Likes: 8
From: Whitefish Falls Ontario
St. Jude Donor '08-'09
With the LCD fuse out connect an ammeter to the sockets for the fuse, as WW7 stated max total drain s/b no more than 50 ma (.05 amps). If more than 1 ma could be a power supply for the unit problem.
http://www.batee.com/corvette/dcrg/advancedproblems.htm
http://www.batee.com/corvette/dcrg/advancedproblems.htm
Thread Starter
Intermediate
Joined: Jan 2013
Posts: 44
Likes: 0
From: Millville NJ
ok I will have to get a new meter to check draw all I know at this point is with the lcd fuse in my car will be dead in 3 days with it uot its good I want this car to be my D,D but it has to start when needed thanks
