Momentary loss
#1
Momentary loss
Hello, while driving my 1996 X-305 yesterday I pushed the button for the front window demister and I think coinsidentally the tach dropped to zero and the speedo the same.The dash lights all came on brightly for a second and the srs light on the dash came on and stayed on.Everything then back to normal with the srs light on. Baffled where should I start. I then parked and restarted everything back to normal and no srs light. The car has 156000 miles on it.It runs great with no issues since the ferrite disc was replaced.Can anyone point me in the right direction or has anyone had this issue before? Best Regards
#2
One of the instrument cluster fuses is the # 5 / 10 amp on the LH heelboard fuse box
Power to this fuse is hot at all times from the battery and runs through the large 250 amp fuse link under the rear seat pan
This is different then the 2 heelboard fuse locations in front of the seat pan
See page 32 point 3 in the square box
The specific fuse is on page 33
http://www.jagrepair.com/images/Auto.../jagxj1996.pdf
The terminal nut on the fuse link can come loose and when you hit the front windshield heat it demanded too much current through the nut clamps dropping out your instruments
The at the battery fuse link can do the same and are easier to get to as a first try
The positive battery cable clamp can stretch over the years and a battery post shim available at the auto parts store can resolve this , 2 bucks with some dielectric between the cleaned battery post mating surface
Power to this fuse is hot at all times from the battery and runs through the large 250 amp fuse link under the rear seat pan
This is different then the 2 heelboard fuse locations in front of the seat pan
See page 32 point 3 in the square box
The specific fuse is on page 33
http://www.jagrepair.com/images/Auto.../jagxj1996.pdf
The terminal nut on the fuse link can come loose and when you hit the front windshield heat it demanded too much current through the nut clamps dropping out your instruments
The at the battery fuse link can do the same and are easier to get to as a first try
The positive battery cable clamp can stretch over the years and a battery post shim available at the auto parts store can resolve this , 2 bucks with some dielectric between the cleaned battery post mating surface
Last edited by Lady Penelope; 01-05-2019 at 08:27 AM.
The following users liked this post:
Marc-XJ12 (01-05-2019)
#4
#5
#6
I would start with a simple battery test.
There are shed down relays in those series cars.
Is your battery new? Do you keep it on a charger?
Anything less then 11/12 volts, the car will do strange things.
If the battery is over 4 years, replace it with a acid standard battery, NOT AN OPTIMA, they do not hold up well.
Good luck.
Also ground and moisture issues but start with the battery.
GTJOEY1314
CLEAN THE GROUND CONNECTION AT THE BATTERY AS WELL.
There are shed down relays in those series cars.
Is your battery new? Do you keep it on a charger?
Anything less then 11/12 volts, the car will do strange things.
If the battery is over 4 years, replace it with a acid standard battery, NOT AN OPTIMA, they do not hold up well.
Good luck.
Also ground and moisture issues but start with the battery.
GTJOEY1314
CLEAN THE GROUND CONNECTION AT THE BATTERY AS WELL.
#7
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#8
#10
Hi, I’ve had a similar thing happen 2 or 3 times but I thought I had also lost all power from the engine just for a split second!
Maybe that was a figment of my imagination upon seeing the revs drop.
I’ll be checking the fuse and fused links along with the rest of my little jobs while the car is off the road awaiting suspension and bushes.
Once again the info on this forum is invaluable.
thanks
marc
Maybe that was a figment of my imagination upon seeing the revs drop.
I’ll be checking the fuse and fused links along with the rest of my little jobs while the car is off the road awaiting suspension and bushes.
Once again the info on this forum is invaluable.
thanks
marc
#11
#12
Momentary loss
OK the battery is ok load tested ...exchanged relays ....checked fusible link for tightness...ok cleaned grounds by battery and cleaned battery posts....Since this the first time it has happened I will post results in a week to see if it occurs again....Just a quick thought.I had to replace my ignition switch on my 1994 X-81 for an intermittent no start. It cured the problem. Is there a chance that the ignition switch is worn out? Just taking a wild guess. Thanks again and if anyone has had this happen to them feel free to include your thoughts.
The following users liked this post:
Lady Penelope (01-07-2019)
#13
#14
The following users liked this post:
Lady Penelope (01-07-2019)
#15
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