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 Engine earth cable?
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Betsy67
V4 Fanatic

United Kingdom
341 Posts

Posted - 25 Nov 2018 :  14:03:04 Show Profile Reply with Quote
Is the 96 supposed to have an engine earth strap?
The reason why Im asking is that a) I cant see one and b) once warm, Betsy takes some starting, due to a low turnover speed on the starter.
Ive not checked anything else - charging etc, but thought that an earth cable missing could be a quick and easy fix.

deggsie
V4 Fanatic

United Kingdom
336 Posts

Posted - 25 Nov 2018 :  17:15:50 Show Profile Reply with Quote
Yes.
There's a flat braided cable that runs from the battery -ive terminal, it's bolted to edge of battery tray then to an engine/gearbox bell housing bolt.

___________________________
Saab - beyond the conventional !
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Betsy67
V4 Fanatic

United Kingdom
341 Posts

Posted - 25 Nov 2018 :  18:20:08 Show Profile Reply with Quote
Thank you.
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RhysN
V4 Fanatic

United Kingdom
274 Posts

Posted - 26 Nov 2018 :  07:17:41 Show Profile Send RhysN an AOL message Reply with Quote
I have often in the past with my older cars, run an earth direct to a bell housing bolt as well as one to the body, just to eliminate a potential "less than healthy" earth. As a trial you could use a jumper cable just to check. If the starter weren't such a PITA it may be worth checking that it has clean contact between housing and the mounting areas?
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melle
V4 Guru

United Kingdom
2835 Posts

Posted - 26 Nov 2018 :  09:18:09 Show Profile Visit melle's Homepage Reply with Quote
I recently overhauled two starters, simple job really. The main issue with them was a build up of grime on the inside. I completely stripped and cleaned them and I also replaced most of the bearings and seals while I was at it.

www.saabv4.com
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Derek
V4 Guru

United Kingdom
1873 Posts

Posted - 28 Nov 2018 :  17:31:32 Show Profile Reply with Quote
Not a comment for Melle. I've seen "rebuilt" starters that have been painted all over. Remember that the face that bolts up to the block must be bare metal to earth it to the block. When rebuilding an engine, this face can get spray painted too. Not good.
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melle
V4 Guru

United Kingdom
2835 Posts

Posted - 28 Nov 2018 :  20:45:16 Show Profile Visit melle's Homepage Reply with Quote
Good tip Derek. Reminds me of a 95 I've broken that had a cork gasket between the starter and the bellhousing, the stud and bolt wrapped in PTFE tape and nylon washers under the nut and the bolt head. No idea how that could have worked; the engine was seized so I haven't tried starting it. I've indeed spray painted my recent overhauls, but I've masked off the contact faces.

www.saabv4.com
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Jimmys old Saab
V4 Beginner

United Kingdom
55 Posts

Posted - 25 Jun 2019 :  23:18:24 Show Profile Reply with Quote
Ah! Good point regarding painting the starter motor; I've just painted mine and installed it...getting that lower bolt tightened involved some swearing! Now, I didn't paint the mating 'collar' of the motor but I did grease it, I don't think that would affect the earth would it?
That brings me to the main question I have;
I'm moving the battery to the boot...so I shall naturally earth to an area of the body nearby...so in order for the starter to work I will need to earth the block/and/or gearbox back to the body, yes?



Saab 96 1971
Saab 9000 CSE turbo 1993
VW T5 LWB 2012

Edited by - Jimmys old Saab on 25 Jun 2019 23:19:01
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Derek
V4 Guru

United Kingdom
1873 Posts

Posted - 26 Jun 2019 :  11:41:25 Show Profile Reply with Quote
If you have moved the battery to the boot you might also have removed the battery tray The earth strap from the tray to the engine can be remade from the engine to the bulkhead and the circuit will then be back to normal. No harm in adding an extra earth as long it is a good metal to metal contact. Make sure you use a large section cable from the battery to the starter to minimise voltage drop. Use a correct HD crimper for the connections.
FYI https://www.autoelectricsupplies.co.uk/product/752/category/124
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Jimmys old Saab
V4 Beginner

United Kingdom
55 Posts

Posted - 27 Jun 2019 :  17:00:09 Show Profile Reply with Quote
Yes, I've removed the battery tray and used proper heavy duty cable for the battery to starter connection. I filled the new connector to the starter with solder. I shall use the old battery to block earth strap to connect block to body.

Saab 96 1971
Saab 9000 CSE turbo 1993
VW T5 LWB 2012
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72sonett3
V4 Fanatic

Spain
251 Posts

Posted - 31 Jul 2019 :  18:33:47 Show Profile Reply with Quote
quote:
Originally posted by deggsie
Yes.
There's a flat braided cable ... to an engine/gearbox bell housing bolt.


To a threaded cylinder head bolt on cylinder 2.

--
'72 97
'77 96L conv.
'79 96GL (LPG)
'83 900i (LPG)
'95 900SE conv.
'99 9-3T
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melle
V4 Guru

United Kingdom
2835 Posts

Posted - 31 Jul 2019 :  19:30:51 Show Profile Visit melle's Homepage Reply with Quote
Also on RHD cars?

www.saabv4.com
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72sonett3
V4 Fanatic

Spain
251 Posts

Posted - 31 Jul 2019 :  21:10:36 Show Profile Reply with Quote
Ah... probably not.

Maybe on cylinder 4?

--
'72 97
'77 96L conv.
'79 96GL (LPG)
'83 900i (LPG)
'95 900SE conv.
'99 9-3T

Edited by - 72sonett3 on 31 Jul 2019 21:11:32
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Woody
V4 Guru

United Kingdom
2442 Posts

Posted - 03 Aug 2019 :  18:25:34 Show Profile Reply with Quote
On RHD cars the earth braided cable end is bolted at the engine side stay bracket lower hole to the cylinder head aside No 4.
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