Trolkar
21-01-2016, 04:43 PM
Hi folks!
I am experience some annoying electrical issues.
When I start the car, the voltage dropped so much, that my radio, UT comp, parking watch and my AT-ECU forgets its settings. (Parking watch is displaying 12:00, My UT comp displays 00:00, and the radio is demanding the security code and the gearbox changes like ****)
Normally it happens only when the car is for a standstill for two or more days. Sometimes even just after 5-6 hours of standstill.
I can start / stop the engine repeatedly, without being able to provoke the situation.
A faulty battery? – Nope… Do not think so. The voltage of the battery is around 12.5-12.6 Volt 30 minutes after a ride. When I measure, the voltage before turning the engine over, it is around 12.3-12.5 Volt.
When I start the engine, it drops shortly to around 12.0. In worst case 11.7.
Never the less, I am now on my third battery. – 1 cheap battery and two Varta.
Still the same.
I have even tried to hardware 2 fully charged batteries with “starting cables” – And therefore starting using 3 batteries at one time. Still experiencing the “short down”.
The car is using lower than 0.05 amp when turned off.
If I disconnect the (-) battery when the engine runs, it keeps running without no problem.
The voltage is around 14.1-14.7 when engine is running. – Pretty solid on 14.4 Volt.
– I therefore do not suspect the battery, but a faulty connection somewhere in the car. The battery poles are as clean as hell.
The cabin light and instruments are "flashing" according to the turnsignal, or apllying the brakes / hi beam on/off.
Where to look?
I am experience some annoying electrical issues.
When I start the car, the voltage dropped so much, that my radio, UT comp, parking watch and my AT-ECU forgets its settings. (Parking watch is displaying 12:00, My UT comp displays 00:00, and the radio is demanding the security code and the gearbox changes like ****)
Normally it happens only when the car is for a standstill for two or more days. Sometimes even just after 5-6 hours of standstill.
I can start / stop the engine repeatedly, without being able to provoke the situation.
A faulty battery? – Nope… Do not think so. The voltage of the battery is around 12.5-12.6 Volt 30 minutes after a ride. When I measure, the voltage before turning the engine over, it is around 12.3-12.5 Volt.
When I start the engine, it drops shortly to around 12.0. In worst case 11.7.
Never the less, I am now on my third battery. – 1 cheap battery and two Varta.
Still the same.
I have even tried to hardware 2 fully charged batteries with “starting cables” – And therefore starting using 3 batteries at one time. Still experiencing the “short down”.
The car is using lower than 0.05 amp when turned off.
If I disconnect the (-) battery when the engine runs, it keeps running without no problem.
The voltage is around 14.1-14.7 when engine is running. – Pretty solid on 14.4 Volt.
– I therefore do not suspect the battery, but a faulty connection somewhere in the car. The battery poles are as clean as hell.
The cabin light and instruments are "flashing" according to the turnsignal, or apllying the brakes / hi beam on/off.
Where to look?