Login Register

1994 850 - Refuse to start

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

Post Reply
User avatar
erikv11
Posts: 11800
Joined: 25 July 2009
Year and Model: 850, V70, S60R, XC70
Location: Iowa
Has thanked: 292 times
Been thanked: 765 times

Re: 1994 850 - Refuse to start

Post by erikv11 »

Yes it is possible, people have reported doing that.
'95 854 T-5R, Motronic 4.4, 185k
'98 V70, T5 tune-injectors-turbo, LPT engine, 304k, daily driver
'06 S60 R, 197k
'07 XC70, black, 205k
'07 XC70, willow green, 212k
'99 Camry V6 :shock: 153k
gone: '96 NA 850 210k, '98 NA V70 182k, '98 S70 NA 225k, '96 855 NA 169k

vitos
Posts: 8
Joined: 12 April 2014
Year and Model: V850 1994
Location: Czech Republic

Post by vitos »

Ok, I'll try to check it and rotate cam sensor 180°. I wonder what changes. :)

vitos
Posts: 8
Joined: 12 April 2014
Year and Model: V850 1994
Location: Czech Republic

Post by vitos »

Hello,

Some good news to everyone:-). When I turned camshaft sensor shutter by 180°, spark problems went gone. Now, spark goes from distributor to each spark plug right in time. Check it here - http://imageshack.com/a/img823/4008/6zyb.png

But there are still some troubles that keeps me a bit disappointed. When trying to start the car, it catches up for a split of the second, but after that, it dies again. You can see it here - http://imageshack.com/a/img823/1940/yiyq.png I also recorded short poor quality video if you will like to see what it realy does. Just ask, I'll post it somewhere.

Have you ever seen such problem? Might it be immobilizer? I thought it prevents fuel pump and injectors, but according to the trace I posted It seemes OK. Do you have any suggestions?

mecheng
Posts: 1271
Joined: 27 March 2014
Year and Model: 1998 Volvo S70 T5
Location: Ontario, Canada
Has thanked: 15 times
Been thanked: 21 times

Post by mecheng »

Pull the plugs and check the strength of the spark visually by grounding plug and cranking in dark
1998 Volvo S70 T5 - SE - 240km - Sold July 2018
1997 Volvo 850 GLT - 190km
Boost is my drug of choice

vitos
Posts: 8
Joined: 12 April 2014
Year and Model: V850 1994
Location: Czech Republic

Post by vitos »

Checked at first, spark seemes to be strong. It is clearly visible even in the daylight.

Post Reply
  • Similar Topics
    Replies
    Views
    Last post