L322 Newby needs help my 2005 4.2 Supercharged will not start

Mark Piercy · May 24, 2020

Datatek said:
Either something is wrong with his DVM or he has a strange battery, it should not read 14 volts unless the engine is running.

Very good point, recheck those readings @Its_ok_im_jk

Its_ok_im_jk · May 24, 2020

Datatek said:
Is that while you are actually turning the key to crank or after? It sounds like the battery is lacking capacity.

It's a brand new battery,

Datatek said:
Either something is wrong with his DVM or he has a strange battery, it should not read 14 volts unless the engine is running.

It's a brand new battery, Hankook MF60038 Car Battery
I trust the DVM

Its_ok_im_jk · May 24, 2020

Mark Piercy said:
Very good point, recheck those readings @Its_ok_im_jk

Yeah fair comment, I will test later and post pics of results.
I have the old battery, I could charge that and swap it to test (I've been using the old battery to bench test the starter)

Mark Piercy · May 24, 2020

Hopefully not a faulty replacement battery.
If it clicks at the starter, you are getting some voltage but maybe not enough power to turn the starter with the engines resistance in addition.

Datatek · May 24, 2020

Its_ok_im_jk said:
It's a brand new battery,

It's a brand new battery, Hankook MF60038 Car Battery
I trust the DVM

What voltage does your DVM show on the old battery?

Its_ok_im_jk · May 24, 2020

Datatek said:
What voltage does your DVM show on the old battery?

11.95v mate

Its_ok_im_jk · May 24, 2020

And I have

Its_ok_im_jk said:
11.95v mate

haven't tried recharging it yet either

Datatek · May 24, 2020

Its_ok_im_jk said:
11.95v mate

So that is flat.

Its_ok_im_jk · May 24, 2020

Datatek said:
So that is flat.

Yeah, that's why I replaced it originally. I will pop it on charge and see if that does the trick.
I've been charging the new one in between attempts at turning it over

Its_ok_im_jk · May 24, 2020

holidaychicken · May 24, 2020

Can you try jumping if from another vehicle to see if it starts with 2 batteries ?
A starter turning over on a bench is a lot different to trying to turn over an engine. I haven’t read the rest of the thread though so I might be off on what your are trying to do.

Mark Piercy · May 24, 2020

Ooer... 12.00 volts isn't à good starting point..
You need at least 12.6, did you check the earth continuity between the starter/block and chassis?

Its_ok_im_jk · May 24, 2020

Mark Piercy said:
Ooer... 12.00 volts isn't à good starting point..
You need at least 12.6, did you check the earth continuity between the starter/block and chassis?

Yeah but I have been charging the old battery, I will swap it over when it's done.
It was just to show how much the battery drops (or didnt) when I try and turn over

Its_ok_im_jk · May 24, 2020

Its_ok_im_jk said:
Yeah but I have been charging the old battery, I will swap it over when it's done.
It was just to show how much the battery drops (or didnt) when I try and turn over

Mark Piercy said:
Ooer... 12.00 volts isn't à good starting point..
You need at least 12.6, did you check the earth continuity between the starter/block and chassis?

I don't have jump leads, but I will ask around

Its_ok_im_jk · May 24, 2020

holidaychicken said:
Can you try jumping if from another vehicle to see if it starts with 2 batteries ?
A starter turning over on a bench is a lot different to trying to turn over an engine. I haven’t read the rest of the thread though so I might be off on what your are trying to do.

Yeah I understand that, I just had to make sure it worked before putting it back on, otherwise i would have ordered a new starter motor.
There doesn't seem to be any real power going to it from the switch live, I assume there Sims a faulty relay ~ I just don't know where.

Datatek · May 24, 2020

Its_ok_im_jk said:
Yeah I understand that, I just had to make sure it worked before putting it back on, otherwise i would have ordered a new starter motor.
There doesn't seem to be any real power going to it from the switch live, I assume there Sims a faulty relay ~ I just don't know where.

Could be a duff ignition switch, common problem

Its_ok_im_jk · May 24, 2020

Datatek said:
Could be a duff ignition switch, common problem

How can I test it?
How can I find out what the fuseboard in the engine bay does~ the lid shows a vague idea, but a wiring diagram would be great. Cant find anything online~ you mentioned RAVE before, where can I get it?

Its_ok_im_jk · May 24, 2020

Here is the lid and hopefully the fuses too

Datatek · May 24, 2020

Its_ok_im_jk said:
How can I test it?
How can I find out what the fuseboard in the engine bay does~ the lid shows a vague idea, but a wiring diagram would be great. Cant find anything online~ you mentioned RAVE before, where can I get it?

I don't think RAVE covers your vehicle,I have just hd a quick look and it doesn't go beyond the BMW V8. you may need TOPIX which requires a subscription.
If someone turns the key for you, what voltage do you get on the thin wire at the starter?

Its_ok_im_jk · May 24, 2020

Datatek said:
I don't think RAVE covers your vehicle,I have just hd a quick look and it doesn't go beyond the BMW V8. you may need TOPIX which requires a subscription.
If someone turns the key for you, what voltage do you get on the thin wire at the starter?

I got almost nothing, 0.5v
I'm charging the new battery which is at 13.1v at the minute, so I'll whip it off charge and back into the car and double check it!

L322 Newby needs help my 2005 4.2 Supercharged will not start

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