Login Register

Control Module replacement on 1997 850

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: Control Module replacement on 1997 850

Post by erikv11 »

Yes they are both the same and that's a good price for the Bosch part (and the right part), fine to jump on it. 137k it isn't even half way if you want to do the maintenance.

Connector is a good point, but that can be tough to diagnose. A junkyard MAF (i.e. a known good one) helps with 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

DavidB
Posts: 16
Joined: 11 September 2016
Year and Model: 1997 850
Location: Aurora

Post by DavidB »

I did note that you mentioned the connector. What am I looking at for that? Do you mean the little electrical plug that I unplugged from the MAF or the physical tubing itself?

If it is the little electrical plug, what should I be looking for?

User avatar
misha
Posts: 5379
Joined: 7 December 2008
Year and Model: '97 850 2.5 20v
Location: Serbia
Has thanked: 152 times
Been thanked: 402 times

Post by misha »

About your edit:......N O ! ! ! :mrgreen:

About connector.....it's clipped and it can't be loosened or something like that.The problem is in wires which connects to pins....before the connector itself.

The only way is to secure the wiring towards down:
MAFtr.jpg
MAFtr.jpg (30.6 KiB) Viewed 579 times
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

DavidB
Posts: 16
Joined: 11 September 2016
Year and Model: 1997 850
Location: Aurora

Post by DavidB »

the connector was not loose or anything, I didn't look at the pins for corrosion, bent, damage, etc, but I'll do that just in case, I can't imagine what else I can look at it for though... ?

Post Reply
  • Similar Topics
    Replies
    Views
    Last post