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by misha
27 Feb 2026, 14:30
Forum: 850, S70, V70, C70, V70-XC 1992-2000
Topic: 850 2.0 t5 picking up rpms and turbo question
Replies: 7
Views: 260

Re: 850 2.0 t5 picking up rpms and turbo question

Cel on?
Read the codes...all you need is a pencil and a piece of paper since '94 produce flash codes.

OBDI diagnostic ports are on passenger's side onto ecu box under the hood.
by misha
28 Dec 2025, 16:57
Forum: 850, S70, V70, C70, V70-XC 1992-2000
Topic: Getting up arrow and check engine light on after repairing PNP switch
Replies: 30
Views: 1096

Re: Getting up arrow and check engine light on after repairing PNP switch

Re-reading your posts again...i did not quite understood was the problem present before pnp switch rebuilt or it appeared after the rebuilt?
by misha
23 Dec 2025, 15:34
Forum: 850, S70, V70, C70, V70-XC 1992-2000
Topic: Getting up arrow and check engine light on after repairing PNP switch
Replies: 30
Views: 1096

Re: Getting up arrow and check engine light on after repairing PNP switch

I just followed the write-up you allready have. Lack of precise view from above for alignment marks will get you pretty close...but you need to figure it out where the signal for reverse lights starts and where it ends....somewhere in between is perfect. Write-up says that transmission should be in ...
by misha
23 Dec 2025, 13:57
Forum: 850, S70, V70, C70, V70-XC 1992-2000
Topic: Getting up arrow and check engine light on after repairing PNP switch
Replies: 30
Views: 1096

Re: Getting up arrow and check engine light on after repairing PNP switch

If you can't start the engine in "N" and reverse lights comes ON when in "R"...you need to re-adjust the pnp switch a bit more....you are pretty close. There are marks that needs to be alligned on pnp switch but in practice it's a bit hard without a special alignment tool. I repl...
by misha
17 Dec 2025, 10:50
Forum: 850, S70, V70, C70, V70-XC 1992-2000
Topic: Rough idle 1998 VOLVO S70 T5
Replies: 2
Views: 83

Re: Rough idle 1998 VOLVO S70 T5

It could be bad maf connector.
They are more prone to failure than actual maf sensor.

I was chasing my tail about this exactly problem for about half a year and nailed it to a bad maf connector.
by misha
06 Dec 2025, 02:19
Forum: 850, S70, V70, C70, V70-XC 1992-2000
Topic: 96' 850 problem torque converter/lock-up clutch
Replies: 13
Views: 777

Re: 96' 850 problem torque converter/lock-up clutch

Could be spark plugs,cap & rotor or spark plug wires.
Is check engine light on?
by misha
01 Dec 2025, 05:56
Forum: 850, S70, V70, C70, V70-XC 1992-2000
Topic: 96' 850 problem torque converter/lock-up clutch
Replies: 13
Views: 777

Re: 96' 850 problem torque converter/lock-up clutch

There are so many tyre shops which doesn't remove old weights before new balancing...they just add more if needed...resulting in bad vibrations which was hardly noticeable before balancing.
Now....i just visit one or two tyre shops because of that and avoid others.
by misha
01 Dec 2025, 03:15
Forum: 850, S70, V70, C70, V70-XC 1992-2000
Topic: 96' 850 problem torque converter/lock-up clutch
Replies: 13
Views: 777

Re: 96' 850 problem torque converter/lock-up clutch

Doesn't matter if wheels are balanced recently. Could be bad tyres or bent rim(s). I had a vibrations you mentioned after fitting a brand new summer tyres. After fitment i had vibrations around 90km/h...2nd balance around 100km/h...3rd balance after 110km/h...4th balance around 120km/h. Balancing ma...
by misha
25 Nov 2025, 12:41
Forum: 850, S70, V70, C70, V70-XC 1992-2000
Topic: 1998 S70 :TCU replaced but do I need Vida to connect?
Replies: 3
Views: 146

Re: 1998 S70 :TCU replaced but do I need Vida to connect?

When there are fault codes stored in TCM module,they don't reset with battery disconnect like engine ecu. You will need at least VOL-FCR or 850app to read & clear the codes to see what's going on. Why did you replaced TCM at first place? Does the orange arrow flashing or it just stays on? When T...
by misha
25 Nov 2025, 01:19
Forum: 850, S70, V70, C70, V70-XC 1992-2000
Topic: 1998 S70 :TCU replaced but do I need Vida to connect?
Replies: 3
Views: 146

Re: 1998 S70 :TCU replaced but do I need Vida to connect?

On '98 & prior you don't.
'99 and later yes since they use CAN network.