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camshaft position sensor

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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oceanman
Posts: 63
Joined: 18 July 2007
Year and Model: 1994 855t
Location: Dacula, GA

camshaft position sensor

Post by oceanman »

its been a while since my last post- so here's what i have done...
timing belt, serp belt, water pump, intercooler hoses, vac hoses, new radiator, expansion tank, coolant hoses, heater core, t stat, strut hardware (mounts, boots, etc, i kept the old struts they were still good), rear shock mounts (shocks were good as well), distributor and rotor, plug wires, plugs, i'm sure i'm forgetting something...
the wagon has about 230k miles

i have had a problem with starting, its random but becoming more and more frequent.
most of the time it will start if cold (overnight), but if i drive for a while and then stop, it wont start. i have never had an issue with it cutting out while driving.
i thought it might be any combination of the fuel pump,relay, fuel pressure regulator.
the codes pulled have always been 212, and 153 (front and rear o2 signal) which i suspect to be from some small as of yet not found vacuum leak. but i recently got 314 which is the camshaft sensor signal.
i checked the wire for the sensor and discovered the plug end of the wire has deteriorated and broken off in the connector, and i can only assume that it is arcing across the pins after the engine heats up and the heat expands the cracks in the plug. i have tried to remove the broken part out of the connector, but it is stuck in there.
my question is: with the connector buggered up as it is, and assuming the sensor is good, would it be ok if i cut the connector end and the plug end, and then spliced the wires together? i have priced a new sensor, and that isn't too bad, but i wouldnt be able to plug it into the old connector. is it possible to replace the connector?

any input/info/advice will be helpful
thank you all...

p.s. i'm an electrician, so it's not difficult for me to splice 3 wires...
'94 850 turbo wagon 285k mi. (ipd chipped ecu; aluminum skid plate; bitchin' stereo; new heater core/t-stat/hoses; sport exhaust; strut brace; turbo vac/boost gauge; k&n air filter; pcv, vacuum hoses replaced)

'93 ford ranger 2.3l 309k mi.

redrider_64
Posts: 14
Joined: 13 June 2009
Year and Model: 850T,1994
Location: atlanta

Post by redrider_64 »

Hey - Mine did the same thing on my 1994 850 Turbo. I used an eyeglass screw driver to gently pry & pull apart the cracked connector. I used electric contact cleaner on both plug end and pin end then dielectric grease. I pushed them back together and tested before I used shrink wrap tape and also used a couple very small tie straps to hold the 2 ends together and then tie wrapped to the mount post. So far so good as that was about 3 weeks ago.

oceanman
Posts: 63
Joined: 18 July 2007
Year and Model: 1994 855t
Location: Dacula, GA

Post by oceanman »

awesome!
thanks, i'll try that tomorrow- it's supposed to rain this evening...
'94 850 turbo wagon 285k mi. (ipd chipped ecu; aluminum skid plate; bitchin' stereo; new heater core/t-stat/hoses; sport exhaust; strut brace; turbo vac/boost gauge; k&n air filter; pcv, vacuum hoses replaced)

'93 ford ranger 2.3l 309k mi.

milesursogood
Posts: 101
Joined: 26 September 2009
Year and Model: 850 T-5, 1997
Location: Portland
Been thanked: 1 time

Post by milesursogood »

Where can I find the cam position sensor in the engine bay?
1997 850 T-5 142k miles - Mobil-1

jblackburn
MVS Moderator
Posts: 14043
Joined: 8 June 2008
Year and Model: 1998 S70 T5
Location: Alexandria, VA
Has thanked: 9 times
Been thanked: 19 times

Post by jblackburn »

Cam position sensor is just behind the distributor cap on the right side of the engine block.

Image
'98 S70 T5
2016 Chevy Cruze Premier


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