Volvo S70 Made from 1998 to 2000, this sporty model replaced the 850 sedan and instantly became a hit.

Rough idle, white smoke, BAD Smell

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Old May 1, 2008 | 09:31 PM
  #21  
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Default RE: Rough idle, white smoke, BAD Smell

Since I've had the car I've ALWAYS used premium. I guess it's hard telling what the previous 65k had though.....
 
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Old May 1, 2008 | 09:34 PM
  #22  
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Default RE: Rough idle, white smoke, BAD Smell

Tech,

Can you give me a ballpark on what this might run? Like I said, I have a longstanding relationship with this dealer....they've always taken care of me but I'm sure this won't be cheap. They even sold me the coil packs for $50 since I bought 5....I thought that was a good price. On a happier note, they are giving me full credit for the coil packs.
 
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Old May 1, 2008 | 09:36 PM
  #23  
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Default RE: Rough idle, white smoke, BAD Smell

Yes they are really nice there.
It is pretty expensive. It is pretty much a headgasket job with the price of the Valves added.
Not to sure Dealer prices.
I think ours is like $1500.00 to $2000.00 or somewhere like that.
But you need to verify with a compression test first to make sure it isn't a bad injector.
 
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Old May 1, 2008 | 09:43 PM
  #24  
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Default RE: Rough idle, white smoke, BAD Smell

OUCH,

Thanks for all your help. I'll keep you posted on what they find. If it is a burnt valve, should I be doing anything else while it's torn apart....maintenance or performance wise? I notice the Mustang pic in your sig. I'm a Ford guy myself (my toy is 1994 Lightning) I decided to give the Volvo a try since my Ford dealer is also the Volvo dealer....right now I'm obviously regretting it. I've never had anything like this happen on one of my Fords, especially on something with this few miles. Maybe I just got a bad car.
 
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Old May 1, 2008 | 10:24 PM
  #25  
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Default RE: Rough idle, white smoke, BAD Smell

I think you just got a bad one.
The white one in my pic below the post has 220,000 miles on it right now.
The Yellow one has about 110,000 on it. They are usually pretty good cars.

Yes the Mustang pic is of my 87 5.0 Coupe.
It is in the Garage waiting for the engine to be pulled and a few things installed.
I have to convert from a Flat tappet Non-Ho motor to a roller Ho motor.
 
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Old May 2, 2008 | 05:52 PM
  #26  
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Default RE: Rough idle, white smoke, BAD Smell

Good news!

They found a bad injector!!!!!!!

They are also recommending that the fuel filter be changed (60k service)? I told them go ahead.

They also found a torn or cracked motor mount.....is this common?

Thanks,

Drew
 
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Old May 2, 2008 | 05:54 PM
  #27  
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Default RE: Rough idle, white smoke, BAD Smell

If it is the front one on the motor R/S of car yes kind of common.
Glad it was only an injector.
 
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Old Nov 13, 2010 | 12:26 PM
  #28  
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What's the odds of a bad injector causing us to have the following codes: P0304, P0300, P0302?
 
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Old Nov 14, 2010 | 07:30 PM
  #29  
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Plugs look old and #3 was actually a different plug all together. Also, the wires are original, date stamped 97/29. I'm going the tune up route.
 
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Old Jun 27, 2019 | 01:22 PM
  #30  
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Default MissyC70

Originally Posted by 2000s70gltse
....But before I do...just to be clear, I replaced just the one coil pack on the plug that was severely fouled. I was reading another thread in which you said to inspect for hairline cracks.

I noticed that all 5 coil packs have a hairline crack. A couple have 2 or 3 cracks. Could this be it? What confuses me is my car was running fine, then it was started up three hours later and would hardly run at all.

Also, during a local search for the coil packs, one dealer asked why I wanted all five. He said that he has never replaced all five at once and he thinks I'm crazy for trying it.

I trust your judgement as many people on the board here do (especially since you're diagnosing online...not easy) If this ends up not being the issue, where do I go from here?

Thanks,

Drew
MissyC70
I have a C70 same problem everything that you listed I had codes po237 po236 p0455 po335 and the service engine light and check engine light were on.
Then I replaced the turbo charger boost pressure valve, manifold pressure sensor, map sensor, crankshaft sensor the cam sensor, spark plugs, ignition coil. I just ran the car for over 30 minutes,. Cold the car has no white exhaust smoke, No service lights or check engine light but once it heats up lots of white smoke and service light on but not constant. the light went out aft I rev the engine. All levels were fine, oil and coolant were fine. I did notice a small faint smoke coming from the back part of the engine not where I could see.
I ordered the blown head gasket tester kit and plan to test tomorrow.
 

Last edited by Missy Moton; Jun 27, 2019 at 01:35 PM. Reason: Forgot to mention
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