I have an '89 XJ40 that has suddenly picked up the habit of sporadically
losing all power. I was driving my car when it suddenly lost all power for a
brief moment, the power seatbelts slid forward and everything. Although the
engine doesn’t receive power when this happens it doesn’t always stall. When
the car loses electrical power it only happens for a second then comes back
to life, but this some times repeats over and over until the car stalls. I
have no idea what’s triggering these power losses. Some times the car wont
even start then miraculously start perfectly a few moments later. I tested
my batter, which is only a year old, and it has no problems with it. If
anyone has experienced a problem like this or has any information as to what
it might be please let me know, it would be greatly appreciated.
Do you have any special anti-theft wiring in the car, such as an ignition
kill? If so I would suspect that first.
Otherwise, I would replace the ignition relay. It should be below the glove
compartment (LH drive car) behind the knee panel.
If that doesn’t do it, it could be the ignition switch.
Dave
At 05:09 AM 8/23/01 -0700, you wrote:
I have an '89 XJ40 that has suddenly picked up the habit of sporadically
losing all power. I was driving my car when it suddenly lost all power for a
brief moment, the power seatbelts slid forward and everything. Although the
engine doesn’t receive power when this happens it doesn’t always stall. When
the car loses electrical power it only happens for a second then comes back
to life, but this some times repeats over and over until the car stalls. I
have no idea what’s triggering these power losses. Some times the car wont
even start then miraculously start perfectly a few moments later. I tested
my batter, which is only a year old, and it has no problems with it. If
anyone has experienced a problem like this or has any information as to what
it might be please let me know, it would be greatly appreciated.
Tom,
I am going something through similar to your challenge and am waiting for a
CPS from Coventry West.It should get here today.There is a thread about this
during the last three days or so.
Peter. 1989 VDP 164750.----- Original Message -----
From: “David Hurlston” dhurlston@viadata.com
To: modern@jag-lovers.org
Sent: Thursday, August 23, 2001 6:54 AM
Subject: Re: [modern] XJ40 losing electrical power
That’s a really nasty habit Tom.
Do you have any special anti-theft wiring in the car, such as an ignition
kill? If so I would suspect that first.
Otherwise, I would replace the ignition relay. It should be below the
glove
compartment (LH drive car) behind the knee panel.
If that doesn’t do it, it could be the ignition switch.
Dave
At 05:09 AM 8/23/01 -0700, you wrote:
I have an '89 XJ40 that has suddenly picked up the habit of
sporadically
losing all power. I was driving my car when it suddenly lost all power
for a
brief moment, the power seatbelts slid forward and everything. Although
the
engine doesn’t receive power when this happens it doesn’t always stall.
When
the car loses electrical power it only happens for a second then comes
back
to life, but this some times repeats over and over until the car stalls.
I
have no idea what’s triggering these power losses. Some times the car
wont
even start then miraculously start perfectly a few moments later. I
tested
my batter, which is only a year old, and it has no problems with it. If
anyone has experienced a problem like this or has any information as to
what
it might be please let me know, it would be greatly appreciated.
The symptoms don’t match a bad CPS Peter. You would not lose electrical
power from a bad CPS.
Dave
At 09:33 AM 8/23/01 -0700, you wrote:
Tom,
I am going something through similar to your challenge and am waiting for a
CPS from Coventry West.It should get here today.There is a thread about this
during the last three days or so.
Peter. 1989 VDP 164750.
----- Original Message -----
From: “David Hurlston” <@David_Hurlston2>
To: modern@jag-lovers.org
Sent: Thursday, August 23, 2001 6:54 AM
Subject: Re: [modern] XJ40 losing electrical power
That’s a really nasty habit Tom.
Do you have any special anti-theft wiring in the car, such as an ignition
kill? If so I would suspect that first.
Otherwise, I would replace the ignition relay. It should be below the
glove
compartment (LH drive car) behind the knee panel.
If that doesn’t do it, it could be the ignition switch.
Thanks Dave,
Appreciate the comment.Always willing to listen and learn !!
Peter.----- Original Message -----
From: “David Hurlston” dhurlston@viadata.com
To: modern@jag-lovers.org
Sent: Thursday, August 23, 2001 10:09 AM
Subject: Re: [modern] XJ40 losing electrical power
The symptoms don’t match a bad CPS Peter. You would not lose electrical
power from a bad CPS.
Dave
At 09:33 AM 8/23/01 -0700, you wrote:
Tom,
I am going something through similar to your challenge and am waiting for
a
CPS from Coventry West.It should get here today.There is a thread about
this
during the last three days or so.
Peter. 1989 VDP 164750.
----- Original Message -----
From: “David Hurlston” dhurlston@viadata.com
To: modern@jag-lovers.org
Sent: Thursday, August 23, 2001 6:54 AM
Subject: Re: [modern] XJ40 losing electrical power
That’s a really nasty habit Tom.
Do you have any special anti-theft wiring in the car, such as an
ignition
kill? If so I would suspect that first.
Otherwise, I would replace the ignition relay. It should be below the
glove
compartment (LH drive car) behind the knee panel.
If that doesn’t do it, it could be the ignition switch.
Tom,
I would suspect the key switch.
You don’t have a large pile of keys hanging from it, do you?
There are also various relays involved, but I think there are different
circuits for the engine management, and lights and so on…
I don’t know what the impact/roll over switch kills when it goes off,
the entire electrical system, or just the fuel pump and engine management
system…
Maybe jiggle the keys next time the car quits…
Brett
1990 XJ6> I have an '89 XJ40 that has suddenly picked up the habit
of sporadically
losing all power. I was driving my car when it suddenly lost
all power for a
brief moment, the power seatbelts slid forward and
everything. Although the
engine doesn’t receive power when this happens it doesn’t
always stall. When
the car loses electrical power it only happens for a second
then comes back
to life, but this some times repeats over and over until the
car stalls. I
have no idea what’s triggering these power losses. Some times
the car wont
even start then miraculously start perfectly a few moments
later. I tested
my batter, which is only a year old, and it has no problems
with it. If
anyone has experienced a problem like this or has any
information as to what
it might be please let me know, it would be greatly appreciated.
In addition to the other sage advice you have already gotten on this
subject, you might want to check your battery ground. It would give you the
same symptoms. The engine would continue to run off the alternator but
everything else comes through the battery. Just a quick thought.
Earl Kiker
90XJ40----- Original Message -----
From: “Tom” clown@creativecarnage.com
To: modern@jag-lovers.org
Sent: Thursday, August 23, 2001 7:09 AM
Subject: [modern] XJ40 losing electrical power
I have an '89 XJ40 that has suddenly picked up the habit of
sporadically
losing all power. I was driving my car when it suddenly lost all power for
a
brief moment, the power seatbelts slid forward and everything. Although
the
engine doesn’t receive power when this happens it doesn’t always stall.
When
the car loses electrical power it only happens for a second then comes
back
to life, but this some times repeats over and over until the car stalls. I
have no idea what’s triggering these power losses. Some times the car wont
even start then miraculously start perfectly a few moments later. I tested
my batter, which is only a year old, and it has no problems with it. If
anyone has experienced a problem like this or has any information as to
what
it might be please let me know, it would be greatly appreciated.
If the battery ground was bad would the engine eventually cut out even
though it was running off the alternator? When the power cuts out in my car
the engine keeps running for a while but eventually will cut out. I did
clean the battery terminals when I had the battery tested and the problem
hasn’t occurred since then. Maybe a bad ground could have been the problem.
Thanks
Tom Hartje
'89 XJ40----- Original Message -----
From: “Earl Kiker” ekiker@swbell.net
To: “Tom” <@Tom1>; modern@jag-lovers.org
Sent: Sunday, August 26, 2001 8:41 PM
Subject: Re: [modern] XJ40 losing electrical power
Tom,
In addition to the other sage advice you have already gotten on this
subject, you might want to check your battery ground. It would give you
the
same symptoms. The engine would continue to run off the alternator but
everything else comes through the battery. Just a quick thought.
Earl Kiker
90XJ40
----- Original Message -----
From: “Tom” <@Tom1>
To: modern@jag-lovers.org
Sent: Thursday, August 23, 2001 7:09 AM
Subject: [modern] XJ40 losing electrical power
I have an '89 XJ40 that has suddenly picked up the habit of
sporadically
losing all power. I was driving my car when it suddenly lost all power
for
a
brief moment, the power seatbelts slid forward and everything. Although
the
engine doesn’t receive power when this happens it doesn’t always stall.
When
the car loses electrical power it only happens for a second then comes
back
to life, but this some times repeats over and over until the car stalls.
I
have no idea what’s triggering these power losses. Some times the car
wont
even start then miraculously start perfectly a few moments later. I
tested
my batter, which is only a year old, and it has no problems with it. If
anyone has experienced a problem like this or has any information as to
what
it might be please let me know, it would be greatly appreciated.