I have a 99 volvo S80 2.9I bough it 3 months from now with 110,000 miles on it.First the transmision failed it was blank i have to repair my transmision on a transmision specialist its cost me $1,200, the cars runs great until it start misfiring and black smoke coming from the exhaust and the motor failing badly put new 2 coils and a brand new mass flow sensor and did it it work but it only lasted 1 week and it start doing the same thing motor failing and black smoke heavily black smoke from the exhaust, i have to put tree set of spark plugs because of sending to much gas to the engine it damages the spark. I took it to a volvo dealer had no other option, I took it there on jan,29,2007 but they told me they still checking because had no hope findin the problem is been to weeks since i took there and they told the same thing every time that they can't find the problem they show me the codes the check engine light cause and its a lot of things misfire cylinder on 3 cylinders they put new coils but the problems persists, O2 sensors the ones in the engine they I don't think that causes that the car is sending to much gas to the engine and black smoke from the exhaust,. I dont know what to do do you think it will cost me a lot please any suggestions

 

Did they do a compression test?

 

Yes they did a compression test they told me it was below normal they told me that yesterday but is that the problemthe low compression, what are they gonna do to resolve the problem is this going to cost me a lot right,

 

I was thinking maybe a Burn't valve.
Which would cost about $3000.00 U.S. dollars maybe a little more.

We have seen it alot on the 960 and S70's

But I wouldn't rule out the S80 from having one as well.

 

Wow that much ... But that causes the black smoke and the misfiring as well then...Man i put so much things i don't know what i'm going to do about this car I put transmision I invert so much on this car,wow and now this and why do you think they haven't told me the exactly what's wrong with it they been with the car for like 3 weeks from now and nothing...

 

They may not have figured it out.
If you very little to no compression thats where I would look.

 

sell it.

 

I was thinkin about it lol I have a 90 740 that is the best car I will not changed it not even for another S80. Dealer Volvo still have my S80 Cause they don't know wats wrong with the car its been a month already its great i'm paying $164 per month for tha loan payment i'm paying a car I can't use isn't that great LOL anyway any aditional help will be aprreciated thankx

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1990 740 GLE
1992 240DL
1994 940 Turbo Wagon
1999 Volvo S80 2.9

 

I see you have 4 volvos. Isn't the s80 the dumbest things they ever came up with? Man, I feel your pain.

Selling it only to make someone else pay the price. Volvo should be the one paying the price. I hope they are thinking really hard right now why their cars are stacking up at the lots.

 

Yeah man I'm proud to say I bought a LEMON CAR lol the car is been a month @ volvo and they even haven't Estimate the job that is going to cost me so calm by the moment, but when they call me I think its going to cost me a lot I told m wife i'm not gonna pay more that $1,500 for that car the car is so much trouble what happen to the good old Volvo I never NEVER have a problem like that with my other volvo's well anyway thankx for the support lol S80's still a beautiful car.

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1990 740 GLE
1992 240DL
1994 940 Turbo Wagon
1999 Volvo S80 2.9

 

Still not hearing from Volvo Dealer and I'm missing myS80 a lot I'm wondering if I finish paying the car and the car still be at the dealer LOL


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1990 740 GLE
1992 240DL
1994 940 Turbo Wagon
1999 Volvo S80 2.9

 

They should have atleast called you and filled you in on whats going on.

 

No man they have not call me no nothing, I did go but that was last week on monday and they told me that mechanic that was taking the car didn't go to work. that day they told me that the car keeps misfiring due to coils but no luck they say they will be replacing all of the wires to the coils to see if that the problem and they also told me that they stabilize the black smoke,and that a little white smoke was coming from the exhaust didn't understand that part why? But I'm going tommorow to check on the car and will let you know what they told me. Thanks tech


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1990 740 GLE
1992 240DL
1994 940 Turbo Wagon
1999 Volvo S80 2.9

 

Hey Tech I go to volvo today and they told me they have to put a new engine wich they estimate me $7,500 for that I'm not paying for that thay told me that the problem was a mechanical problem not an electrical problem and that I have to put new engine. I'm going to volvo specialist that has volvo computer and well trained for the s80's and do the job do you ahve any idea what could it be if its not a electrical problem.????????????

 

I still kind of have a hunch it might be a burnt valve.
Did they ever do a compression test?

 

They told me that on all piston the compression was below normal...

 

But even if they were below normal but not more that 20% from each other that is fine.
Unless it was like 90 PSI.

 

The car has the pistons rings bad because the spark plugs are soeaked with oil and its burning oil I have to repair my engine completely i'm thinkin of buying and used or rebuild mine completely what do you think tech wich is much cheapier....

 

Buy a used engine with fairly low miles if you can.

Im not really sure if the oikl is coming from the rings it could also be coming from the Valve seals.

 

Hey tech I called like every junker here @ PR and no one has an engine for an volvo S80,They don't even know what car is that is there someplace outside of PR that I can look for Like i'm thinkin of rebuilding the engine better But I want to bu the parts my self then let the mechanic do his work where can I find a Kit of all the Piston rings bearings.......will apreciate it