Just bought a 940 diesel

Briz · Jun 26th, 2010, 14:07

Bought this the other day:

Paid £400; runs pretty well, and I already had some hubcaps.
Got a few niggles to sort out, fuel & temp gauges, rear shocks and the overdrive (manual box) only works when its cold.
If this doesn't respond to new fluid & a filter cleanup, then I'm considering swapping the gearbox for a 5-speed.
Question is, does anyone know if the bellhousing to gearbox bolt pattern is the same on the M46 box as the M47?

CTCNetwork · Jun 26th, 2010, 14:37

Hi,

Chances are the O/D solenoid is the guilty party.
Over Drive Rebuild...
Above may help in sorting the problem.

There is also loads of other useful info in the FAQ as well.

Des. . .

cumbrianmale · Jun 27th, 2010, 00:44

I think the bellhousing is unique to the diesel, it is a VW LT engine so don't think the redblock bellhousing fits. I stand to be corrected though.

Jim760 · Jun 27th, 2010, 09:42

Simon, correct about the bellhousing but i beieve the bellhousing is removable on the M's too (not the 5 speed M90 though wich is redblock and white block specific box) so you could swich over the redblock one for the diesel. same general idea as we did on the limo

1st off i vote for the OD selinoid relay, tall green one in the case of 940s. i used to hit mineor wiggleit to make it work lol also it would be worth cleaning the switch in the gear lever, check out the 700/900 FAQ for info on that, or your haynes manual.
2nd the wiring on the selinoid can get in a state, well with checking and cleaning the connector.

Briz · Jun 27th, 2010, 21:44

Thanks for the advice guys.
I think I will try to stay with the O/D. Seems they have taller overall gearing than the M47.

rustarcher · Jun 27th, 2010, 22:52

I have had a few 940 diesels. They are great! Just bought another one, almost broke and was looking at other options. Verdict every thing else (newer) is rubbish. Stick with the overdrive box as they are more readily available; stronger and give little trouble and the bonus of one clutchless ratio change should your clutch be inoperable which some times happens. Fuel gauges always seem to give trouble and any attempts at repairs seem to centre on a problem with the instrument cluster circuitry.

dingo · Oct 10th, 2010, 19:50

just got a 940 , o/d not working
done tests , and found the switch at 4th gear is u;s
so to get it to work i just put the wire to earth ,( have it in all gears , )
only temp

first at the stand still all is ok .then .when i put all the bits back , fuses blew,

so then i started to take extra care at installing the board ,
great all going well
on the way home fuse blew again .
any one had probs with the fuse board

dingo · Oct 22nd, 2010, 21:51

Quote:

Originally Posted by dingo

just got a 940 , o/d not working
done tests , and found the switch at 4th gear is u;s
so to get it to work i just put the wire to earth ,( have it in all gears , )
only temp

first at the stand still all is ok .then .when i put all the bits back , fuses blew,

so then i started to take extra care at installing the board ,
great all going well
on the way home fuse blew again .
any one had probs with the fuse board

the clutch was changed some time ago ,and they forgot to tie up the wires that came through the housing , jack up the car , look to the left of the rear of the gear box over drive ,the two bars that hold the gear change .should have a bracket that holds the wires to the overdrive , make shure that they have not been cut ,pull the cover to cheack ,

Jun 26th, 2010, 14:07	#1
Briz Junior Member Last Online: Nov 22nd, 2023 15:20 Join Date: Jun 2010 Location: West Norfolk	Just bought a 940 diesel Bought this the other day: Paid £400; runs pretty well, and I already had some hubcaps. Got a few niggles to sort out, fuel & temp gauges, rear shocks and the overdrive (manual box) only works when its cold. If this doesn't respond to new fluid & a filter cleanup, then I'm considering swapping the gearbox for a 5-speed. Question is, does anyone know if the bellhousing to gearbox bolt pattern is the same on the M46 box as the M47?

Jun 26th, 2010, 14:37	#2
CTCNetwork Forum Support Team Join Date: Dec 2004 Location: Liège, Belgium View Photos By: CTCNetwork	Hi, Chances are the O/D solenoid is the guilty party. Over Drive Rebuild... Above may help in sorting the problem. There is also loads of other useful info in the FAQ as well. Des. . . __________________ Density:- Not just a measurement ~ It's a whole way of Life.! ! ! I drive a Volvo, Please Don't Get In My Way! OldVolvos4Ever He shows up. People die. He vanishes. People should not be afraid of their governments. "He'll deliver more justice in a weekend than 10 years of your Governments should be afraid of their people... "V" courts & tribunals. Just stay out of his way." "I plan to."

Jun 27th, 2010, 00:44	#3
cumbrianmale Forum Support Team Last Online: Apr 30th, 2024 20:41 Join Date: Mar 2006 Location: Deep in Makem territory	I think the bellhousing is unique to the diesel, it is a VW LT engine so don't think the redblock bellhousing fits. I stand to be corrected though. __________________ Current 04 S80 D5 SE Auto 03 S80 D5 SE Man Previous Volvos 90 240 GL B230FB Auto 96 940 CD 13 V40 D2 R-design 89 745 GLE 98 V90 3.0 24v 98 945 Celebration Auto 96 965 SE Auto 86 744 GL 81 244 DL

Jun 27th, 2010, 09:42	#4
Jim760 Mr G Last Online: Jun 12th, 2020 19:11 Join Date: May 2007 Location: north yorkshire	Simon, correct about the bellhousing but i beieve the bellhousing is removable on the M's too (not the 5 speed M90 though wich is redblock and white block specific box) so you could swich over the redblock one for the diesel. same general idea as we did on the limo 1st off i vote for the OD selinoid relay, tall green one in the case of 940s. i used to hit mineor wiggleit to make it work lol also it would be worth cleaning the switch in the gear lever, check out the 700/900 FAQ for info on that, or your haynes manual. 2nd the wiring on the selinoid can get in a state, well with checking and cleaning the connector. __________________ will the jimousine ride again? previous models 940 TDI360 GLT 480 ES 740 GLE 940 SE 760 Executive 940 GL 850 GL 760 TIC V70 Torslanda Last edited by Jim760; Jun 27th, 2010 at 09:48.

Oct 10th, 2010, 19:50	#7
dingo Junior Member Last Online: Jan 14th, 2013 15:10 Join Date: Oct 2007 Location: rotherham	overdrive man 940 just got a 940 , o/d not working done tests , and found the switch at 4th gear is u;s so to get it to work i just put the wire to earth ,( have it in all gears , ) only temp first at the stand still all is ok .then .when i put all the bits back , fuses blew, so then i started to take extra care at installing the board , great all going well on the way home fuse blew again . any one had probs with the fuse board

Jun 27th, 2010, 21:44	#5
Briz Junior Member Last Online: Nov 22nd, 2023 15:20 Join Date: Jun 2010 Location: West Norfolk	Thanks for the advice guys. I think I will try to stay with the O/D. Seems they have taller overall gearing than the M47.

Jun 27th, 2010, 22:52	#6
rustarcher Junior Member Last Online: Oct 16th, 2022 10:00 Join Date: Jun 2010 Location: glos	I have had a few 940 diesels. They are great! Just bought another one, almost broke and was looking at other options. Verdict every thing else (newer) is rubbish. Stick with the overdrive box as they are more readily available; stronger and give little trouble and the bonus of one clutchless ratio change should your clutch be inoperable which some times happens. Fuel gauges always seem to give trouble and any attempts at repairs seem to centre on a problem with the instrument cluster circuitry.

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