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by Solutech
21 Oct 2009, 01:52
Forum: 850, S70, V70, C70, V70-XC 1992-2000
Topic: 850 97 Losing power
Replies: 19
Views: 3686

Re: 850 97 Losing power

Decided to fix it the easy way . Off to the scarp yard it goes . Problems somewhere in the engine management and I just dont have the time or the money to keep chasing sensors .
by Solutech
16 Oct 2009, 16:49
Forum: 850, S70, V70, C70, V70-XC 1992-2000
Topic: 850 97 Losing power
Replies: 19
Views: 3686

Re: 850 97 Losing power

Theres a problem with it relearning then as its undrivable . With the maf connected if you try to drive it as soon as you give it the hint of some pedal it starts to buck and lose power . I reckon I would need somewhere in the region of 5 miles of road to get to 45mph the way it accelerates at the m...
by Solutech
16 Oct 2009, 11:12
Forum: 850, S70, V70, C70, V70-XC 1992-2000
Topic: 850 97 Losing power
Replies: 19
Views: 3686

Re: 850 97 Losing power

Just had another pair of eyes on it and he says its got to be in the management system somewhere . Without the maf we get stalling but engine revs smoothly up and down . With maf we get a perfect idle but engine wont rev up and down unless it has gas applied slowly . Other than the maf are there any...
by Solutech
16 Oct 2009, 07:00
Forum: 850, S70, V70, C70, V70-XC 1992-2000
Topic: 850 97 Losing power
Replies: 19
Views: 3686

Re: 850 97 Losing power

yep tried that . Clock etc all reset and radio flashing code . Engine still the same .
by Solutech
16 Oct 2009, 06:31
Forum: 850, S70, V70, C70, V70-XC 1992-2000
Topic: 850 97 Losing power
Replies: 19
Views: 3686

Re: 850 97 Losing power

Straight out of the box just like the last set . Same brand and type of plug . I can check the gaps but it doesnt explain why the idle/rev problems swap over when you disconnect the MAF . I'll drop the old plugs back in and see if the problem goes .
by Solutech
16 Oct 2009, 05:50
Forum: 850, S70, V70, C70, V70-XC 1992-2000
Topic: 850 97 Losing power
Replies: 19
Views: 3686

Re: 850 97 Losing power

The plugs are brand new . And I live in the uk . The garages near to me have code scanners but so far none have managed to read off the codes .

All hoses are connected theres nothing leaking I'm stumped .
by Solutech
16 Oct 2009, 05:19
Forum: 850, S70, V70, C70, V70-XC 1992-2000
Topic: 850 97 Losing power
Replies: 19
Views: 3686

Re: 850 97 Losing power

I changed the fuel and air filter earlier . No change . Idles lovely but wont rev correctly on full gas it gets to 2500-2800rpm and bounces back n forth. Smooth revving with a little more pedal at a time and it revs all the way up to redline . Again disconnect the MAF and it wont idle but revs up fi...
by Solutech
15 Oct 2009, 17:36
Forum: 850, S70, V70, C70, V70-XC 1992-2000
Topic: 850 97 Losing power
Replies: 19
Views: 3686

Re: 850 97 Losing power

The CEL is on as I disconnected the MAF . Its been lit for 12 months since I last disconnected the MAF trying to diagnose a similar problem . I havent had the codes cleared as it requires a reader I dont have and none of the local greasemonkeys has a reader that will link up to it . The MAF I remove...
by Solutech
15 Oct 2009, 08:07
Forum: 850, S70, V70, C70, V70-XC 1992-2000
Topic: 850 97 Losing power
Replies: 19
Views: 3686

Re: 850 97 Losing power

Surely if the filter was clogged then disconnecting the maf wouldnt improve it . Car revs much better without the maf . But after a quick check the filter looks to be quite old . Note on UK models the filters on the drivers side :wink: thought I was going barmy for a while looking on passenger side .
by Solutech
15 Oct 2009, 07:31
Forum: 850, S70, V70, C70, V70-XC 1992-2000
Topic: 850 97 Losing power
Replies: 19
Views: 3686

Re: 850 97 Losing power

When plugs were replaced about 12 months back I replaced the rotor arm,cap and leads . All are still in good condition . The fuel filter I havent done so it may be worth replacing . The air filter again is in good shape .