740gl 1989

Tonymac · Jul 19th, 2020, 14:45

Hi All
My fuel gauge and temp read out not working, I have the dash out but no signed of any defects. I Have been advised the maybe the two faults are connected.
I would be very grateful for any advise or assistance.
Thanks very much
Toni

bob12 · Jul 19th, 2020, 19:19

Welcome,

Firstly it is necessary to know what oem cluster you have. If it's a 1989 740 GL (saloon) or even an estate (745) it is likely to be made by VDO rather than Yazaki. Put up a picture of the front for starters.

Bob

taiwan740 · Jul 19th, 2020, 23:27

Complete jumping the gun here but just watch out putting it all back together, make sure your battery light comes on with the ignition (not engine start) as I think there is a little lead which can come off on re-installation and then your alternator won't work.

It took me and a few friends quite a number of hours in the dark in January in a Tesco car park debugging that one.

Laird Scooby · Jul 20th, 2020, 00:35

First question is does your speedo and rev counter (tachometer) still work?

Next is what are your soldering skills like and can you post a photo of the PCB side as well as the front?

bob12 · Jul 20th, 2020, 20:34

If it's what I think it is it should look like this .... Oops, sorry had to slip in a pic of the new toy which is receiving all my attention at the moment!!

Bob

loki_the_glt · Jul 21st, 2020, 08:48

Quote:

Originally Posted by bob12

If it's what I think it is it should look like this .... Oops, sorry had to slip in a pic of the new toy which is receiving all my attention at the moment!!

Bob

Please sir, isn't the engine in your new toy 90 degrees out of alignment?

Laird Scooby · Jul 21st, 2020, 09:52

Quote:

Originally Posted by loki_the_glt

Please sir, isn't the engine in your new toy 90 degrees out of alignment?

It's driving the wrong wheels too!

bob12 · Jul 21st, 2020, 14:06

I haven't experienced anything wrong with the engine or drive. I guess it must have been put in at the factory that way. Maybe it was a Friday!.

Compared with the old 2ltr Bosch LH2.4 manual on the 745 the 'toy' is a delight to drive. Sink into the full leathers, adjust the electric seat and steering column to suit, into drive and we are off with turbo charged power in aircon luxury. Of course, not forgetting to release the handbrake. On the motorway just flick in the cruise control. Oh yes, as you get older this is my kind of driving sod which way round the mechanicals are!!

My big problem is you can't drive two cars at once, but how do you just dump a 30 year old car you have had since new!

Cheers all, Bob

Laird Scooby · Jul 21st, 2020, 14:16

Is your V70 a turbo then Bob? I thought it was the 3.0 straight 6 jobby?

bob12 · Jul 21st, 2020, 16:26

Quote:

Originally Posted by Laird Scooby

Is your V70 a turbo then Bob? I thought it was the 3.0 straight 6 jobby?

Yes Dave, it's a V70 T5 CD Auto with the B5234 T3 engine (5 cylinder 20 valve jobby). I guess it will be fine until the electrics start to play up and then i'll need the 745!!

Bob

Jul 19th, 2020, 14:45	#1
Tonymac New Member Last Online: Jun 7th, 2021 08:14 Join Date: Jul 2020 Location: Heysham	740gl 1989 Hi All My fuel gauge and temp read out not working, I have the dash out but no signed of any defects. I Have been advised the maybe the two faults are connected. I would be very grateful for any advise or assistance. Thanks very much Toni

Jul 20th, 2020, 00:35	#4
Laird Scooby Premier Member Last Online: Yesterday 20:02 Join Date: May 2012 Location: Lakenheath	First question is does your speedo and rev counter (tachometer) still work? Next is what are your soldering skills like and can you post a photo of the PCB side as well as the front? __________________ Cheers Dave Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........

Jul 21st, 2020, 14:16	#9
Laird Scooby Premier Member Last Online: Yesterday 20:02 Join Date: May 2012 Location: Lakenheath	Is your V70 a turbo then Bob? I thought it was the 3.0 straight 6 jobby? __________________ Cheers Dave Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........

Jul 19th, 2020, 19:19	#2
bob12 bob12 Last Online: Yesterday 18:45 Join Date: Aug 2006 Location: Woking	Welcome, Firstly it is necessary to know what oem cluster you have. If it's a 1989 740 GL (saloon) or even an estate (745) it is likely to be made by VDO rather than Yazaki. Put up a picture of the front for starters. Bob

Jul 19th, 2020, 23:27	#3
taiwan740 Member Last Online: Aug 20th, 2023 15:06 Join Date: Sep 2019 Location: Milton Keynes	Complete jumping the gun here but just watch out putting it all back together, make sure your battery light comes on with the ignition (not engine start) as I think there is a little lead which can come off on re-installation and then your alternator won't work. It took me and a few friends quite a number of hours in the dark in January in a Tesco car park debugging that one.

Jul 21st, 2020, 14:06	#8
bob12 bob12 Last Online: Yesterday 18:45 Join Date: Aug 2006 Location: Woking	I haven't experienced anything wrong with the engine or drive. I guess it must have been put in at the factory that way. Maybe it was a Friday!. Compared with the old 2ltr Bosch LH2.4 manual on the 745 the 'toy' is a delight to drive. Sink into the full leathers, adjust the electric seat and steering column to suit, into drive and we are off with turbo charged power in aircon luxury. Of course, not forgetting to release the handbrake. On the motorway just flick in the cruise control. Oh yes, as you get older this is my kind of driving sod which way round the mechanicals are!! My big problem is you can't drive two cars at once, but how do you just dump a 30 year old car you have had since new! Cheers all, Bob

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