940 Automatic crank sensor holes

TonyS9 · Aug 26th, 2019, 23:05

940 2.3 LPT automatic 1998

Just trying to clear up an anomoly with dropping a 940 automatic engine into a manual 360 conversion for my friend who is far away and for some reason not able to provide pics etc.

He's maybe not got the right dog dish flywheel as he's not getting crank signal apparently. Or more oddly does the auto pick up the crank position another way or another position?

Does the automatic have the crank pick up holes in the flex plate? He is saying it is smooth without holes.

Laird Scooby · Aug 27th, 2019, 09:49

As far as i'm aware Tony, the autos have a pick-up on top of the bellhousing for the CPS, not sure if they changed it post-95 but i thought it was only the manual gearbox that changed to the M90 so can't see a logical reason to move it.

However, given it's going into a manual, if memory serves the CPS is mounted near the starter and reads the gaps on the dog-dish so that does point to either the wrong dog-dish or perhaps fitted in the wrong place. He hasn't simply re-used the original manual flywheel from the manual 360 has he?

mhuk · Aug 27th, 2019, 10:38

Not sure if this is of any use.... When the garage had a nightmare fitting my dogdish/m90 .

https://www.volvoforums.org.uk/showthread.php?t=291869

&

https://www.youtube.com/watch?v=RwOW...ature=youtu.be

classicswede · Aug 27th, 2019, 11:53

Auto and manual use exactly the same setup just the auto has a flex plate rather than a flywheel.

Is the flywheel the correct 60-2 pattern?
Is the flywheel positioned correctly?
Is the 940 sensor and bracket being used?

If all 3 are a yes then it's most likely a wiring issue.

TonyS9 · Aug 28th, 2019, 01:01

No he says its a 240 flywheel, and his mechanic saying 'its not reading the teeth'. Didn't make alot of sense, best guess is its the wrong flywheel.

95 Manual has M90 (my daily)
97 Manual has M90 (my 360 donor) but have CPS in the same position at the top in line with the cyls, so yes I can't image any reason for it (98 auto) to be different. I think there is only 1 place to mount it. One theory was that they have a different bracket and sits closer to the ring gear, but again can't see there being any space for that.

Laird Scooby · Aug 28th, 2019, 07:57

Quote:

Originally Posted by TonyS9

No he says its a 240 flywheel, and his mechanic saying 'its not reading the teeth'. Didn't make alot of sense, best guess is its the wrong flywheel.

95 Manual has M90 (my daily)
97 Manual has M90 (my 360 donor) but have CPS in the same position at the top in line with the cyls, so yes I can't image any reason for it (98 auto) to be different. I think there is only 1 place to mount it. One theory was that they have a different bracket and sits closer to the ring gear, but again can't see there being any space for that.

Most 240s had the block mounted dizzy which would be the Hall Effect, i know some of the very last 240s had the B230 which would probably have had the CPS mounted on the bell housing but on the balance of probability, i'd say the 240 won't have the teeth for the CPS to read.

Either that or a wiring problem somewhere, possibly a combination of both.

classicswede · Sep 2nd, 2019, 21:43

There is only one version of the LH2.4 snesor and bracket.

Most 240 flywheels have no indents for a sensor to pick up. B230k engine use teh same pattern as a 360 so would not work. It is only the late B200F and B230F engines that came with the 60-2 pattern flywheel

TonyS9 · Sep 2nd, 2019, 23:01

Thanks that make sense and he's looking for a new flywheel, there is one on ebay looks the part.

I just found out that 60-2 means 60 minus 2, rather than 60 then 2. There are only 58 holes!

Laird Scooby · Sep 2nd, 2019, 23:15

Quote:

Originally Posted by TonyS9

I just found out that 60-2 means 60 minus 2, rather than 60 then 2. There are only 58 holes!

That's the one, the 30th and 60th holes aren't there and the missing pulses trigger the TDC positions.

classicswede · Sep 3rd, 2019, 12:04

Quote:

Originally Posted by Laird Scooby

That's the one, the 30th and 60th holes aren't there and the missing pulses trigger the TDC positions.

No that is not the case at all. 59 and 60 are the missing holes right next to each other

Aug 26th, 2019, 23:05	#1
TonyS9 Premier Member Last Online: Apr 9th, 2024 21:44 Join Date: Jul 2009 Location: Holywood	940 Automatic crank sensor holes 940 2.3 LPT automatic 1998 Just trying to clear up an anomoly with dropping a 940 automatic engine into a manual 360 conversion for my friend who is far away and for some reason not able to provide pics etc. He's maybe not got the right dog dish flywheel as he's not getting crank signal apparently. Or more oddly does the auto pick up the crank position another way or another position? Does the automatic have the crank pick up holes in the flex plate? He is saying it is smooth without holes.

Aug 27th, 2019, 09:49	#2
Laird Scooby Premier Member Last Online: Today 23:04 Join Date: May 2012 Location: Lakenheath	As far as i'm aware Tony, the autos have a pick-up on top of the bellhousing for the CPS, not sure if they changed it post-95 but i thought it was only the manual gearbox that changed to the M90 so can't see a logical reason to move it. However, given it's going into a manual, if memory serves the CPS is mounted near the starter and reads the gaps on the dog-dish so that does point to either the wrong dog-dish or perhaps fitted in the wrong place. He hasn't simply re-used the original manual flywheel from the manual 360 has he? __________________ Cheers Dave Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........

Aug 27th, 2019, 11:53	#4
classicswede Trader Volvo in my veins Last Online: Today 22:41 Join Date: Dec 2004 Location: Anglesey	Auto and manual use exactly the same setup just the auto has a flex plate rather than a flywheel. Is the flywheel the correct 60-2 pattern? Is the flywheel positioned correctly? Is the 940 sensor and bracket being used? If all 3 are a yes then it's most likely a wiring issue. __________________ http://www.classicswede.org www.classicswede.co.uk

Sep 2nd, 2019, 21:43	#7
classicswede Trader Volvo in my veins Last Online: Today 22:41 Join Date: Dec 2004 Location: Anglesey	There is only one version of the LH2.4 snesor and bracket. Most 240 flywheels have no indents for a sensor to pick up. B230k engine use teh same pattern as a 360 so would not work. It is only the late B200F and B230F engines that came with the 60-2 pattern flywheel __________________ http://www.classicswede.org www.classicswede.co.uk

Aug 27th, 2019, 10:38	#3
mhuk Senior Member Last Online: Mar 1st, 2024 08:41 Join Date: Mar 2009 Location: London	Not sure if this is of any use.... When the garage had a nightmare fitting my dogdish/m90 . https://www.volvoforums.org.uk/showthread.php?t=291869 & https://www.youtube.com/watch?v=RwOW...ature=youtu.be

Aug 28th, 2019, 01:01	#5
TonyS9 Premier Member Last Online: Apr 9th, 2024 21:44 Join Date: Jul 2009 Location: Holywood	No he says its a 240 flywheel, and his mechanic saying 'its not reading the teeth'. Didn't make alot of sense, best guess is its the wrong flywheel. 95 Manual has M90 (my daily) 97 Manual has M90 (my 360 donor) but have CPS in the same position at the top in line with the cyls, so yes I can't image any reason for it (98 auto) to be different. I think there is only 1 place to mount it. One theory was that they have a different bracket and sits closer to the ring gear, but again can't see there being any space for that.

Sep 2nd, 2019, 23:01	#8
TonyS9 Premier Member Last Online: Apr 9th, 2024 21:44 Join Date: Jul 2009 Location: Holywood	Thanks that make sense and he's looking for a new flywheel, there is one on ebay looks the part. I just found out that 60-2 means 60 minus 2, rather than 60 then 2. There are only 58 holes!

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)