V50 Electrics : - best £3 spent ever (contact cleaning spray)

jeffmasson · Apr 30th, 2014, 17:34

well as most of you know i have been having several different problems with my v50 over my 1 year of ownership and have now (touch wood) solved all of them with nothing more than contact cleaner spray.

high speed can bus fault = cleaned ecm connectors
strange goings on = clean cem connectors
RR door lock stops working when warm = clean driver and rear door connectors

so to this end i think we should have a sticky for this if your cars out of warranty and something stops working find its module and spray connectors with contact cleaner first.

i would hate to think how much money all these problems would have cost to get fix at a garage let alone at a stealer.

noney82 · May 1st, 2014, 02:07

What brand is it, might get some as my drivers door has issues in warm weather

jeffmasson · May 1st, 2014, 16:51

Quote:

Originally Posted by noney82

What brand is it, might get some as my drivers door has issues in warm weather

just got the halfords one its £3.99 but i got it with my trade card.

probably get it at a motor factors cheaper but it was a sunday and i had for gotten to get some in the week and as i was doing my pollen filter it was the best time to clean my cem.

good luck

Welton · May 2nd, 2014, 08:01

So if you unplug a multi-pin connector you just spray this on both halves and put back together?

jeffmasson · May 2nd, 2014, 17:07

Quote:

Originally Posted by Welton

So if you unplug a multi-pin connector you just spray this on both halves and put back together?

yes that's all i did and left it for a few minutes to dry before re connecting.

Green Trout · Dec 2nd, 2020, 07:37

Just getting to looking at connectors. Xc70 playing up in the cold and wet. Cleaning electrical contacts seems a good idea, but we should probably also be then spraying them with a little protective contact grease.

IainG · Dec 2nd, 2020, 07:57

Hi

Quote:

Originally Posted by Green Trout

Just getting to looking at connectors. Xc70 playing up in the cold and wet. Cleaning electrical contacts seems a good idea, but we should probably also be then spraying them with a little protective contact grease.

A lot of the good contact cleaners also leave a protective coating after. So worth checking on the can.
I use the RS contact cleaner.
Iain

T5R92011 · Dec 2nd, 2020, 15:33

It's amazing what issues are fixed just by poor electrical contacts.

Went out to my V70 the other day, turned the key to start the engine and nothing happened. Dash lights were fine, but starter motor unresponsive.

The fix was to clean the contacts on the ignition feed wire going to the starter.

eric19371 · Dec 7th, 2020, 16:27

I used the WD40 one and it seems to have solved (touch wood) my wife's S40 throttle problems. (cleaned the CEM contacts)

I followed a video that also used small pipe cleaner brushes and a toothbrush to clean the contacts. Don't know if it helped but I would guess it is important to clean off any crud.

https://youtu.be/H_M0KW3wFpI

https://www.volvoforums.org.uk/showthread.php?t=297100

Apr 30th, 2014, 17:34	#1
jeffmasson Senior Member Last Online: Jan 2nd, 2024 18:23 Join Date: Apr 2013 Location: worthing	best £3 spent ever (contact cleaning spray) well as most of you know i have been having several different problems with my v50 over my 1 year of ownership and have now (touch wood) solved all of them with nothing more than contact cleaner spray. high speed can bus fault = cleaned ecm connectors strange goings on = clean cem connectors RR door lock stops working when warm = clean driver and rear door connectors so to this end i think we should have a sticky for this if your cars out of warranty and something stops working find its module and spray connectors with contact cleaner first. i would hate to think how much money all these problems would have cost to get fix at a garage let alone at a stealer. __________________

May 1st, 2014, 02:07	#2
noney82 Master Member Last Online: Dec 31st, 2021 01:00 Join Date: Jul 2012 Location: manchester/Stockport	What brand is it, might get some as my drivers door has issues in warm weather __________________ http://giffgaff.com/orders/affiliate/noney82 click link to order a sim and experience great PAYG offers and £5 free credit when you sign up

May 2nd, 2014, 08:01	#4
Welton Premier Member Last Online: Sep 14th, 2021 17:03 Join Date: Feb 2009 Location: Market Harborough	So if you unplug a multi-pin connector you just spray this on both halves and put back together? __________________ 2005 S40 T5 SE - Manual. Bilstein B4's. (For Sale) 2010 Citroen C4 1.6 HDi (bizarre Gearbox model). 2010 Renault Twingo (refreshingly simple) 2018 Infiniti Q30 1.6T Business Executive (what's this button do?)

Dec 2nd, 2020, 07:37	#6
Green Trout XCNewbie Last Online: Dec 2nd, 2020 07:37 Join Date: Feb 2018 Location: Glasgow	Clean Connectors Just getting to looking at connectors. Xc70 playing up in the cold and wet. Cleaning electrical contacts seems a good idea, but we should probably also be then spraying them with a little protective contact grease.

Dec 2nd, 2020, 15:33	#8
T5R92011 FCW Auto Service Last Online: Today 18:14 Join Date: Feb 2015 Location: Gloucester	It's amazing what issues are fixed just by poor electrical contacts. Went out to my V70 the other day, turned the key to start the engine and nothing happened. Dash lights were fine, but starter motor unresponsive. The fix was to clean the contacts on the ignition feed wire going to the starter. __________________ FCW Auto Service (Gloucester) https://www.fcw-autoservice.com

Dec 7th, 2020, 16:27	#9
eric19371 Clueless Last Online: Apr 17th, 2024 21:55 Join Date: Apr 2013 Location: Wrotham	I used the WD40 one and it seems to have solved (touch wood) my wife's S40 throttle problems. (cleaned the CEM contacts) I followed a video that also used small pipe cleaner brushes and a toothbrush to clean the contacts. Don't know if it helped but I would guess it is important to clean off any crud. https://youtu.be/H_M0KW3wFpI https://www.volvoforums.org.uk/showthread.php?t=297100 __________________ Current Volvo's: S40 1.8 (55) & V50 2.4i (04) Past Volvo: S40 1.8 ('97/R) & 240 GLE ('76/R)

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