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Idle oscillation and miss

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

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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Joined: Wed Feb 27, 2019 6:15 pm
Year and Model: 98 s70
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Idle oscillation and miss

Post by Dieselerdie » Sun Apr 14, 2019 11:54 am

Ok so heres whats up the car starts just fine and when its not missing has tons of power. But it rpm hunts almost all the time at idle and when you first start it for about 10 mins it misses and blows black smoke. No misfire codes just a cam sensor advanced or bank 1 perf and a p0013, p0014 and a manufacturer control code i cant remember. All the sudden it will run great and stop missing but the oscillation never stops. The vvt isnt on this engine but the solenoid is there and pluged in but it ran fine for 2 weeks like that b4 this started. 99 s70 2.4 turbo new built motor, new throttle body, coils, plugs, cam and crank sensors, cams, and a ton more. You name it ive probably replaced it ived gone over it with a dvom. One time i got a weird code faulty computer or something but it hasnt came back since

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