Volvo Community Forum. The Forums of the Volvo Owners Club

Forum Rules Volvo Owners Club About VOC Volvo Gallery Links Volvo History Volvo Press
Go Back   Volvo Owners Club Forum > "Technical Topics" > 850 / S70 & V70 '96-'99 / C70 '97-'05 General > 850/x70 S1 Wants
Register Members CarsBlogs Help Calendar Mark Forums Read

Notices

Information
  • VOC Members: There is no login facility using your VOC membership number or the details from page 3 of the club magazine. You need to register in the normal way
  • AOL Customers: Make sure you check the 'Remember me' check box otherwise the AOL system may log you out during the session. This is a known issue with AOL.
  • AOL, Yahoo and Plus.net users. Forum owners such as us are finding that AOL, Yahoo and Plus.net are blocking a lot of email generated from forums. This may mean your registration activation and other emails will not get to you, or they may appear in your spam mailbox

Thread Informations

Clutch position sensor

Views : 228

Replies : 18

Users Viewing This Thread :  

Reply
 
Thread Tools Display Modes
Old Aug 13th, 2019, 13:56   #1
SteveSarre
Premier Member
 

Last Online: Today 20:57
Join Date: Oct 2004
Location: London/West Country
Default Clutch position sensor

Hi all,

I am looking for a clutch position sensor.

There will be one on any of various V70s and C70s with a manual gearbox.

If yours works so much the better (the resistance changes out of acceptable range and throws an ETS error), but even if it doesn't work I am interested in the housing because I want to do some tinkering to see if I can come up with a reliable solution.

It lives up behind the clutch and brake pedal cluster, and you can unplug it if you crouch down in the drivers footwell.

Please drop me a PM with what you have and include postage to me in UK.

Thanks
Steve
Attached Images
File Type: jpg Clutch position sensor.jpg (104.1 KB, 6 views)
__________________
V70 2.5 Turbo AWD Man. 1999 Red
V70 2.5 10V Auto 1998 Green
C70 T 20V Auto Conv. 2001 Blue, C70 T5 Auto Conv. 2000 Blue
V70 2.5 Turbo AWD Auto 1998 Green, V70 2.5 10V Auto BiFuel 1999 Red (scrapped) V70 20v Auto 1999 Green (scrapped)

Last edited by SteveSarre; Aug 13th, 2019 at 14:01.
SteveSarre is offline   Reply With Quote
Old Aug 13th, 2019, 18:24   #2
cheshired5
Premier Member
 

Last Online: Today 21:41
Join Date: Dec 2013
Location: Crewe
Default

How is yours not working Steve?
What are your symptoms?
__________________
2002 S60 SE D5 Manual
205000 miles
cheshired5 is offline   Reply With Quote
Old Aug 13th, 2019, 20:58   #3
SteveSarre
Premier Member
 

Last Online: Today 20:57
Join Date: Oct 2004
Location: London/West Country
Default

Hi Cheshired5

ETS light is on.
If I start the car with the pedal halfway down, there is no ETS light until I release the pedal.
VIDA reports ECM-9300 Clutch pedal position sensor. Faulty signal.

If I remove the sensor the resistances compressed are 300 ohms and extended 4.4 kOhms
Supply voltage is about 5v, which I believe is as expected.

I believe the acceptable ranges are something like

Unpressed pedal=1400-2400 ohms
Fully Depressed pedal= 200-800 ohms

Unfortunately this is a new sensor which I only put in the car a couple of weeks ago (the old one was physically broken). Worked fine initially, now failed.
A new sensor (part number is 9472979) is about 60 pounds. But I really don't want to put a new one in and have it fail again.
There are quite a few posts out there about this problem.

I intend to put a 7 kohm resistor in parallel to reduce the effective resistance of the sensor.

I believe that this faulty sensor is also having other side effects on the engine (hesitation and lack of power).
Other later models experience similar but slightly different side effects (inhibited ability to crank).

Have you dealt with this situation before?

Steve
__________________
V70 2.5 Turbo AWD Man. 1999 Red
V70 2.5 10V Auto 1998 Green
C70 T 20V Auto Conv. 2001 Blue, C70 T5 Auto Conv. 2000 Blue
V70 2.5 Turbo AWD Auto 1998 Green, V70 2.5 10V Auto BiFuel 1999 Red (scrapped) V70 20v Auto 1999 Green (scrapped)

Last edited by SteveSarre; Aug 13th, 2019 at 21:04.
SteveSarre is offline   Reply With Quote
Old Aug 13th, 2019, 21:22   #4
cheshired5
Premier Member
 

Last Online: Today 21:41
Join Date: Dec 2013
Location: Crewe
Default

Quote:
Originally Posted by SteveSarre View Post
Have you dealt with this situation before?
Yes quite a few times as CPS faults are common on P2s.

Post #23 and #24 in this thread give you a couple of fix options.
__________________
2002 S60 SE D5 Manual
205000 miles
cheshired5 is offline   Reply With Quote
Old Aug 13th, 2019, 21:39   #5
SteveSarre
Premier Member
 

Last Online: Today 20:57
Join Date: Oct 2004
Location: London/West Country
Default

Hi

Yes, thanks. I hadn't read that particular thread, but I had read others that were similar.

I looked for leaked clutch fluid inside the sensor but that was inconclusive. Anyway I cleaned the tracks a few times with brake cleaner, meths and finally warm water but none of those changed any resistance values.

I have opened the casing up, and soldered two thin wires to the terminals inside, enlarged a small hole in the casing, then brought the wires out through that.

Currently waiting for some resistors and potentiometers to arrive in the post so I can connect them to the wires and set the resistance to what I want, then refit to the car.

If it conclusively fixes the ETS light and hopefully improves performance, I will report back.

I wanted some used sensors to play with in case things go terribly wrong!

Steve
__________________
V70 2.5 Turbo AWD Man. 1999 Red
V70 2.5 10V Auto 1998 Green
C70 T 20V Auto Conv. 2001 Blue, C70 T5 Auto Conv. 2000 Blue
V70 2.5 Turbo AWD Auto 1998 Green, V70 2.5 10V Auto BiFuel 1999 Red (scrapped) V70 20v Auto 1999 Green (scrapped)

Last edited by SteveSarre; Aug 13th, 2019 at 21:41.
SteveSarre is offline   Reply With Quote
Old Aug 13th, 2019, 21:42   #6
cheshired5
Premier Member
 

Last Online: Today 21:41
Join Date: Dec 2013
Location: Crewe
Default

Are the resistance values going down and up uniformly in line with how much you contract and extend the rod?
__________________
2002 S60 SE D5 Manual
205000 miles
cheshired5 is offline   Reply With Quote
Old Aug 13th, 2019, 22:25   #7
SteveSarre
Premier Member
 

Last Online: Today 20:57
Join Date: Oct 2004
Location: London/West Country
Default

Yes
Steve
__________________
V70 2.5 Turbo AWD Man. 1999 Red
V70 2.5 10V Auto 1998 Green
C70 T 20V Auto Conv. 2001 Blue, C70 T5 Auto Conv. 2000 Blue
V70 2.5 Turbo AWD Auto 1998 Green, V70 2.5 10V Auto BiFuel 1999 Red (scrapped) V70 20v Auto 1999 Green (scrapped)
SteveSarre is offline   Reply With Quote
Old Aug 14th, 2019, 01:41   #8
cheshired5
Premier Member
 

Last Online: Today 21:41
Join Date: Dec 2013
Location: Crewe
Default

Interesting.
Just a thought but does the new CPS part number match up with the Vida parts catalogue for the vehicle profile?

Just wondering if similar looking sensors can fit ok but run off different resistance values causing ECM codes due to different return voltages.
__________________
2002 S60 SE D5 Manual
205000 miles
cheshired5 is offline   Reply With Quote
Old Aug 14th, 2019, 03:21   #9
SteveSarre
Premier Member
 

Last Online: Today 20:57
Join Date: Oct 2004
Location: London/West Country
Default

Hi C

Phew, you had me worried there for a minute!

Yes, 9472979 is the correct part as per the Vida parts catalogue for the vehicle profile.

That exact part is used across a variety of models:

Volvo C70 2.3l 5 cylinder Turbo Convertible 1998, 1999, 2000, 2001, 2002, 2003, 2004
Volvo C70 2.3l 5 cylinder Turbo Coupe 1998, 1999, 2000, 2001, 2002
Volvo S60 2004, 2005, 2006, 2007, 2008
Volvo S60 2.0l 5 cylinder Turbo 2004
Volvo S60 2.3l 5 cylinder Turbo 2001, 2002, 2003, 2004
Volvo S60 2.4l 5 cylinder 2001, 2002, 2003, 2004, 2005, 2006
Volvo S60 2.5l 5 cylinder Turbo 2004, 2005
Volvo S70 2.3l 5 cylinder Turbo 1998, 1999, 2000
Volvo S70 2.4l 5 cylinder 2000
Volvo S70 2.5l 5 cylinder 1999
Volvo S70 2.5l 5 cylinder Fuel Injected 1998
Volvo V70 2004, 2005, 2006, 2007
Volvo V70 2.3l 5 cylinder Turbo 1998, 1999, 2000, 2001, 2002, 2003, 2004
Volvo V70 2.4l 5 cylinder 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
Volvo V70 2.5l 5 cylinder 1999
Volvo V70 2.5l 5 cylinder Fuel Injected 1998
Volvo V70 2.5l 5 cylinder Turbo 1998
Volvo V70 XC 2.5l 5 cylinder Turbo 2004

Steve
__________________
V70 2.5 Turbo AWD Man. 1999 Red
V70 2.5 10V Auto 1998 Green
C70 T 20V Auto Conv. 2001 Blue, C70 T5 Auto Conv. 2000 Blue
V70 2.5 Turbo AWD Auto 1998 Green, V70 2.5 10V Auto BiFuel 1999 Red (scrapped) V70 20v Auto 1999 Green (scrapped)
SteveSarre is offline   Reply With Quote
Old Aug 14th, 2019, 08:51   #10
dcw
VOC Member
 

Last Online: Sep 13th, 2019 19:12
Join Date: Jan 2007
Location: YORK
Default

Steve - I have just changed the CPS on my C70, and the dead one is still on the side of my workbench; like you I tried everything to clean the tracks but it made not an iota of difference!

If it's genuinely of use to you I'll happily pop it in the post if you PM me your address.

Best

David
__________________
2013 V60 D5 SE Lux
2004 C70 Collection
1994 480 GT & 1995 480 Celebration
dcw is offline   Reply With Quote
The Following User Says Thank You to dcw For This Useful Post:
Reply


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

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 23:11.


Powered by vBulletin
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.