You know, I have two 89 cats and the same problem with both.
The battery is drained every three days? The alternator is
good it’s charging @ 13 to 14. I disconnect the seat belts
cause I had one pulling a charge all the time. Any ideas out
there? What’s draining the battery?–
Jerry Lee Lawrence
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
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You know, I have two 89 cats and the same problem with both.
The battery is drained every three days? The alternator is
good it’s charging @ 13 to 14. I disconnect the seat belts
cause I had one pulling a charge all the time. Any ideas out
there? What’s draining the battery?–
Jerry Lee Lawrence
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
Visit the Jag Lovers homepage at http://www.jag-lovers.org for exciting services and resources including Photo Albums, Event Diary / Calendar, On Line Books and more !
In reply to a message from Jerbare sent Tue 26 May 2015:
If the battery is good and the alternator is charging well
and you genuinely have ‘dark current’ drain then you need to
identify the circuit which is causing that drain.
To do that, disconnect the negative battery lead and connect
an ammeter in series between the battery lead and the
negative battery post. Then, with everything switched off,
all doors and boot lid closed, wait a couple of minutes and
note the ammeter reading. It should be about 40 Milliamps or
less. If it exceeds that figure, start pulling/replacing
each fuse in turn from the left and right fuse boxes and
note which fuse causes the current drain to drop. One (or
more) of those fuses will be in the circuit causing the
battery drain. Find which one it is and you are half way to
solving the problem.–
The original message included these comments:
You know, I have two 89 cats and the same problem with both.
The battery is drained every three days? The alternator is
good it’s charging @ 13 to 14. I disconnect the seat belts
cause I had one pulling a charge all the time. Any ideas out
there? What’s draining the battery?
Visit the Jag Lovers homepage at http://www.jag-lovers.org for exciting services and resources including Photo Albums, Event Diary / Calendar, On Line Books and more !
In reply to a message from Jerbare sent Tue 26 May 2015:
You may want to check whether the key slot in the doors is
hot. The lock heater circuit is prone to failure. The
heaters are energized by pulling up on either front door
handle and current will flow until both thermostats are
satisfied.
The circuit shares a fuse with the radio, so pulling the
fuse isn’t really an option. The relay is behind the trim
in the right side foot well. Pulling the relay should kill
the battery drain if it’s the heaters.
I’ve owned two 88s and an 89 and I’ve disabled the door lock
heaters on all three cars for that reason.–
The original message included these comments:
You know, I have two 89 cats and the same problem with both.
The battery is drained every three days? The alternator is
good it’s charging @ 13 to 14. I disconnect the seat belts
cause I had one pulling a charge all the time. Any ideas out
there? What’s draining the battery?
Visit the Jag Lovers homepage at http://www.jag-lovers.org for exciting services and resources including Photo Albums, Event Diary / Calendar, On Line Books and more !
I have an 89 also with the same issue, pulling the fuses did not work, but a new overvolts relay took out some drain and jaguar pete suggestion was spot on! Haven’t had to charge for over a month, sometimes she sits for a week and fires right up!
I believe the picture you showed is from the Haynes Manual? Regrettably not always 100% accurate!
I’ve checked my copies of the factory service manual circuit diagrams for your car and offer the following in the hope of clarifying the situation.
The Door Lock Heater relay is not on the ‘Component Panel’ under the passenger side dash. It is the one with the BLACK base at the bottom of the ‘A’ post on the passenger side. It can further be identified by reference to the wiring to the relay base. You should see a Brown/white wire to one pin, a Slate (grey) wire to one pin, an Orange wire to one pin and another Brown/white wire to another pin.
Contrary to the Haynes Manual, the relay with the Black base on the Component Panel is the relay for the AC and Radio with Light Green/orange, Brown/white (x2) and Blue wires to its base.
The Auxiliary Side Light relay on the Component Panel, also contrary to your picture, has a Green base with Brown/white, Blue/orange, Black and Blue/green wiring according to my circuit diagrams
