Wanted: 1992 940 instrument cluster - Page 2

Steve740 · Dec 20th, 2020, 15:43

Ah I had an inkling that the speedo issue might've been linked to the overdrive (solenoid?) issue back then as they seemed to happen at the same time, but yeah I'll give a new diff sensor/wiring a look before going at the cluster.

Cheers!

Laird Scooby · Dec 20th, 2020, 16:33

The rear sensor in the diff provides the signal for the ABS and (assuming your 740 is 1988-1990) after going through a frquency divider that divides by 8, feeds the sppedo with pulses as well.

If yours is an estate, the wiring will travel from the diff towards the left wheel then backwards into the front left of the spare wheel well.

It then goes backwards along the left side of the well and crosses over the chassis member next to the fuel filler neck into the cubby hole behind the wheel arch.

There it goes into a single use box, black and about the size of half a fag packet. Another place it can chafe is where it passes over the chassis member next to the fuel filler neck - this can also cause a wear hole on either the filler neck or the fuel breather pipe :

A few pics there to show what i mean. You can't see the little black box because it's buried under the CD changer (which is now gone) but you can see where the breather pipe on the filler neck had chafed and had a hole and the temporary repair.

timtillson · Jan 28th, 2021, 19:11

Hi. Not sure if you have found the instrument cluster for your 940 yet, but I have one from a 1995 LPT 940, if interested. All gauges and bulbs ok but it is not the cluster with the turbo gauge. Drop me a message if interested. Tinm

Dec 20th, 2020, 16:33	#12
Laird Scooby Premier Member Last Online: Yesterday 09:22 Join Date: May 2012 Location: Lakenheath	The rear sensor in the diff provides the signal for the ABS and (assuming your 740 is 1988-1990) after going through a frquency divider that divides by 8, feeds the sppedo with pulses as well. If yours is an estate, the wiring will travel from the diff towards the left wheel then backwards into the front left of the spare wheel well. It then goes backwards along the left side of the well and crosses over the chassis member next to the fuel filler neck into the cubby hole behind the wheel arch. There it goes into a single use box, black and about the size of half a fag packet. Another place it can chafe is where it passes over the chassis member next to the fuel filler neck - this can also cause a wear hole on either the filler neck or the fuel breather pipe : A few pics there to show what i mean. You can't see the little black box because it's buried under the CD changer (which is now gone) but you can see where the breather pipe on the filler neck had chafed and had a hole and the temporary repair. __________________ Cheers Dave Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........

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Dec 20th, 2020, 15:43	#11
Steve740 Junior Member Last Online: Mar 29th, 2023 17:37 Join Date: Jun 2017 Location: Ulverston	Ah I had an inkling that the speedo issue might've been linked to the overdrive (solenoid?) issue back then as they seemed to happen at the same time, but yeah I'll give a new diff sensor/wiring a look before going at the cluster. Cheers!

Jan 28th, 2021, 19:11	#13
timtillson New Member Last Online: Mar 26th, 2024 18:08 Join Date: Oct 2018 Location: CAMBRIDGE	Hi. Not sure if you have found the instrument cluster for your 940 yet, but I have one from a 1995 LPT 940, if interested. All gauges and bulbs ok but it is not the cluster with the turbo gauge. Drop me a message if interested. Tinm

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