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Topic: The old Battery drain issue (Read 236 times) |
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cobrascim
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The old Battery drain issue
« on: Aug 6th, 2023, 6:55pm » |
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I have been reading through all the issues relating to battery drain. Turns out my 0.2A battery drain is a mixture of 50mA onto the feed to the lpg ecu and approx. 150mA onto the main red wire feeding the fuse boxes etc. I now have the glovebox bulb out, interior lights in off position, removing relay 16 along with fuses 36 and 17 does not reduce the 150mA. On other advice on the permanent feed to the fans - I disconnected the plug and put my meter on ohms across the loom side wires to see if there was a connection but it was open circuit.
I have all the fuses from both boxes out one at a time and the drain remained which is confusing me. I will keep going with this and post up what I find but any suggestions welcome. I may try disconnecting the audio equipment next.
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cobrascim
Junior Member
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Re: The old Battery drain issue
« Reply #1 on: Aug 7th, 2023, 2:22pm » |
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I dont think it helps that the battery fitted is an 075 which is 60Ah 500CCA. I have an LPG ECU fitted to the opposite side of battery from the fusebox which looks to take up the extra space I would need for a bigger battery on the tray. I can only presume this was fitted when lpg conversion was done years back.
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cobrascim
Junior Member
I'm a YaBB newbie!
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Re: The old Battery drain issue
« Reply #2 on: Aug 8th, 2023, 11:46pm » |
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So new battery fitted and LPG ECU moved to allow the bigger battery. The shop guy said the 075 I had in it was the correct battery for my Scorpio but I went for higher rated 100N which took up the whole battery tray at 278mm wide and 175mm tall and deep. The 096 that I was considering is a taller battery and didnt want to risk the clamps etc not fitting over it correctly.
Anyway car was MOT'd today although had a slight mishap as the radiator fan didnt cut in and spewed out some of my new coolant. Need to order a new temp switch by the looks of it. Put a wire across the plug to run it during mot.
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Torbayboy
Full Member
Posts: 848
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Re: The old Battery drain issue
« Reply #3 on: Sep 5th, 2023, 3:14pm » |
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You're not going to love me for this, but Xander and I got so fed up with the (now mine) 12v estate running down batteries, getting damp in the rad switch, and generally offering itself up for crushing, that I bought it off him.
I paid the man to completely rewire the rad fans and put a remote operated battery cut out on it.
That worked well,....... left for a week and it rained, flattened the battery oh no! not again.....so more investigations proved the battery drain was either starter or alternator....
So we disconnected the 3 red wires on the battery and put the fusebox feed only through the remote switch off, = no more problems.
Mind you every time we turn it back on the ritual of adjust clocks to mph code the radio drive 5 miles so the car loves me again BUT it's always on the button now lovely drive and sweet as a nut with the old cologne purring away.
Probably not a fix for ohers but kept the car on the road, and in the long run saved a fortune chasing wires that don't wanna be fixed.
Happy daze in a 12 v estate 
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Cosworth Scorpio only 46 on the road now NOW down to 42.
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cobrascim
Junior Member
I'm a YaBB newbie!
Posts: 81
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Re: The old Battery drain issue
« Reply #4 on: Sep 7th, 2023, 10:34am » |
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With the new bigger battery fitted to mine and the glove box bulb removed I havent had a drain issue since (yet). I am using the car more regular nowadays which obviously helps but hoping that I havent just jinxed it. 
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