andydckent
13-07-2015, 09:16 PM
OK we have a few problems here but I am beginning to suspect they are linked. I will try to summerise briefly.
1) Alarm sometimes won't arm and there is the sound or a relay clicking away inside when the doors are closed. Suspect reason is not enough power to activate relay. Result is weak battery after sitting all day or over the weekend. Final result flat battery this morning (was expecting this to happen). This has happened previously to repair event referred to in other two points.
Removed battery to recharge as considered it had never been fully charged since the car was off the road due to being written off and repaired by my dad and myself. Battery charges to good voltage.
Charged battery does not solve alarm relay clicking. Perhaps it will work if the alarms internal battery needs to charge for a while.
2) Check voltage across battery while car running. It is charging at 16v+. This is far to high. Suspect alternator is not regulating voltage correctly and could be causing other problems including the above. Suspect that is a result of the battery being connected the wrong way round when the car was being fixed as detailed in this post: http://www.clubvr4.com/forum/showthread.php?73239-Battery-connected-wrong-way-What-s-broken It could have happened since I suppose.
It's a cold spec alternator, assume that voltage regulator is built in and that the whole thing needs replaced?
3) Jerky auto box changes as detailed in this post have not fully gone away: http://www.clubvr4.com/forum/showthread.php?73418-Autobox-Jerky-change-4-to-5 This is despite correct fluid levels and ATF being in decent condition. I wonder if this could be a result of possible damage to ECU caused by battery connected wrong way around or by alternating overcharging? Or if the voltage in the battery has been draining enough to reset ecu?
Linking these things together but I think you'll see what I'm on about. Thoughts please?
Thanks
Andy
1) Alarm sometimes won't arm and there is the sound or a relay clicking away inside when the doors are closed. Suspect reason is not enough power to activate relay. Result is weak battery after sitting all day or over the weekend. Final result flat battery this morning (was expecting this to happen). This has happened previously to repair event referred to in other two points.
Removed battery to recharge as considered it had never been fully charged since the car was off the road due to being written off and repaired by my dad and myself. Battery charges to good voltage.
Charged battery does not solve alarm relay clicking. Perhaps it will work if the alarms internal battery needs to charge for a while.
2) Check voltage across battery while car running. It is charging at 16v+. This is far to high. Suspect alternator is not regulating voltage correctly and could be causing other problems including the above. Suspect that is a result of the battery being connected the wrong way round when the car was being fixed as detailed in this post: http://www.clubvr4.com/forum/showthread.php?73239-Battery-connected-wrong-way-What-s-broken It could have happened since I suppose.
It's a cold spec alternator, assume that voltage regulator is built in and that the whole thing needs replaced?
3) Jerky auto box changes as detailed in this post have not fully gone away: http://www.clubvr4.com/forum/showthread.php?73418-Autobox-Jerky-change-4-to-5 This is despite correct fluid levels and ATF being in decent condition. I wonder if this could be a result of possible damage to ECU caused by battery connected wrong way around or by alternating overcharging? Or if the voltage in the battery has been draining enough to reset ecu?
Linking these things together but I think you'll see what I'm on about. Thoughts please?
Thanks
Andy