Jump Starting

[964rh]

Hi

Been away for a few weeks and surprise, surprise the battery has lost most of it's power.
The cars been standing on my driveway covered but I've been told that the weather over here has been crap.

I've tried jump starting the car from my 16v Golf but it still wouldn't turn over. All I got was a half hearted attempt to turn over and then just clicking.

Is there anything else I need to do to prep the car up for a jump start?


Any suggestions would be greatly appreciated

Regards

Rob

 

[Guest]

Hi Rob, I'm very nervous about jump starting Porsches of this era. My '85 3.2 Carrera was jump started by a paint-shop once and they blew the bejesus out of the Hamilton & Palmer immobiliser (standard fitment on UK Porsches. The one with the little black key with gold fingers). The circuit board was burned out.

There are so many more expensive electronic components in our 964 models, that I would not risk a jump start. My advice is to get the battery out (or disconnected) and charge it up overnight with a good battery charger.

HTH
Malcolm

 

[tim_haskins]

If your battery is that flat then the car will never start with jump leads. The engine on a 964 must turn over at a certain RPM to allow the electronics to work. I agree with malcolm to remove battery and then trickle charge. Flat batterys are nomally caused by one of the following:-

1) knackered battery
2) Knackard alternator
3) Door pins for interior light. The 964 looks for the last door to be shut if the switch has worn contacts then the car does not shut down properly(ie car still looks for door to be shut) and therefore drains the battery. Check luggage compartment light, engine light and door switches. It happened to me as well and the luggage compartment switch had an imtermitant fault. Replaced switch and all is now ok.

Let us know how you get on

Tim
[]

 

[964rh]

Cheers gentlemen

Sh1t, glad I gave up and posted.

Will try and charge the battery when I get back from Poland at the weekend.
Just a shame I couldn't take it out today as the weather was gorgeous today.

Battery drain, as far as I can work out, is from the Clifford alarm I had fitted to replace that awful UK fit immobilizer.

Will let you know the results.

Thanks

Rob

 

[Guest]

Hi Rob, what model of Clifford do you have. I too have a Clifford on my 964; it's a Concept 600. I'm wondering what on the alarm could be faulty and causing the drain, or if it's just the normal drain of the alarm over a longer period of no use.

I use my 964 virtually daily. It usually doesn't lie for more than 3 days without use. The winter seems to sap the power out of batteries right enough.

Cheers
Malcolm

 

[964rh]

Hi Malcolm

My Clifford is a concept 300.

According to the dealer who fitted it, the car needed running every week as the alarm would sap power from the battery due to the led and the sensors inside the car, so I assume that it is just normal drain.

I've never left it as long so i've never had this problem before, but I am going to check with the installer. I'll let you know.

Rob

 

[Neil Eldred]

I have a concept 600 on my 964 and according to the instruction manual the alarm will go "dormant" after a few days to conserve power. If it detects that there is any intrusion it will wake up and do its job. I have jumped mine off before with no adverse affects.

Regards,

Neil Eldred

 

[kevin]

Taking the battery out to charge it up is fine if you are at home, however if like I you have had battery failures in petrol stations etc, waddya do then?

I've had no problems jumping my 964 and if you are sensible you shouldn't too. Polarity is the key here......that is what normally destroys the electronics.


kevin

 

[Guest]

My battery is dead if I leave the car for about a week in really cold weather - the coldness of the weather does seem to have an effect. I usually don't even lock it when in the garage to conserve the battery.

Did it to me once in a service station. As I stood there wondering what to do a mobile mechanic parked next to me.

I now have a trickle charger in the garage.

 

[964rh]

I've had some feed back from the people who fitted the Clifford.

All of the new style Clifford alarms do indeed go into a dormant mode after a certain amount of time, but the LED and internal security sensors are still active having a draining affect on the battery.

This increases, if like me, the LED's on the door cards are still active.

They advised me to start and run the car at least once a week to keep the charge on the battery sufficent.

The battery is now on charge with a friend while I'm on holiday and i'm putting it back on at the weekend.

Do I need to drive the car like I've nicked it to set up the computer?

Thanks

Rob

 

[Fred Hindle]

I suggest you get yourself a battery conditioner (assuming that you have power in the garage).
No need to drive it like you've nicked it. A normal spirited drive for half an hour should do the trick.[]