IPD sale XeMODeX - Experts in Volvo Electronics
Did you know? 🤔
Logged in users can get email notification of topic replies Log in or register (free).
Amazon Link Buy your stuff using this and it helps MVS!

S80 sputtering, won't accelerate

Help, Advice, Owners' Discussion and DIY Tutorials on the Volvo S80 model. Sometimes called an "executive car", the S80 was and continues to be Volvo's top-of-the-line passenger car.
hypersomnia
Posts: 13
Joined: Wed Dec 15, 2010 2:44 pm
Year and Model: 1999
Location: Orlando
Has thanked: 0
Been thanked: 0
hypersomnia

S80 sputtering, won't accelerate

Post by hypersomnia » Wed Dec 15, 2010 2:53 pm

Yesterday, I also had the problem, I had an S80, 2.9L, 100K milage. The engine began to shake when I was waiting the traffic light, then I can not accelerate anymore, I need to back the idle and put more gas, but it only change two gears very slowly and at most 30 mph, I dont know what happened. The car is up-to-date maintanced and this noon when I unplug the power of MAFS, when I put more gas, there is no response, the engineer is just shacking overthere, there is no message regarding to this issue, can anybody tell is it because of the MAFS?

Thanks



JRL
Posts: 9351
Joined: Tue Nov 22, 2005 2:07 pm
Year and Model: Several
Location: 19333
Has thanked: 0
Been thanked: 11 times
United States of America
JRL

Re: S70 sputtering, now won't accelerate over 20 mi per hr

Post by JRL » Wed Dec 15, 2010 3:22 pm

I just had a car with similar (poor) running
and NO CODES
Replaced the MAF, good as new


2000 V70R Black, 144,000 miles Wife's R.
2007 V70 2.5T White/Oak 111,000 MILES. Polestar tune, IPD bars, rear spoiler, dark grey Thors, DWS 06, HU850, sub.

Contact info for purchases: [email protected]

hypersomnia
Posts: 13
Joined: Wed Dec 15, 2010 2:44 pm
Year and Model: 1999
Location: Orlando
Has thanked: 0
Been thanked: 0
hypersomnia

Re: S70 sputtering, now won't accelerate over 20 mi per hr

Post by hypersomnia » Wed Dec 15, 2010 3:27 pm

Thanks, JRL,

how much it usually cost?
I check it on ebay, its from $50-200 for a new one.
Which range should I choose?



jblackburn
MVS Moderator
Posts: 14049
Joined: Sun Jun 08, 2008 3:54 pm
Year and Model: 1998 S70 T5
Location: Alexandria, VA
Has thanked: 8 times
Been thanked: 6 times
United States of America
jblackburn

Re: S70 sputtering, now won't accelerate over 20 mi per hr

Post by jblackburn » Wed Dec 15, 2010 3:31 pm

Whoever the OEM supplier for the S80 is (for the S70, they are Bosch or Denso brand). This isn't a part you want to use a cheap, aftermarket brand for - they just don't work. I've split this off into the S80 section.


'98 S70 T5
2016 Chevy Cruze Premier


A learning experience is one of those things that says, "You know that thing you just did? Don't do that."

mercuic: Long live the tractor motor!

hypersomnia
Posts: 13
Joined: Wed Dec 15, 2010 2:44 pm
Year and Model: 1999
Location: Orlando
Has thanked: 0
Been thanked: 0
hypersomnia

Re: S80 sputtering, won't accelerate

Post by hypersomnia » Wed Dec 15, 2010 7:31 pm

Thanks,



hypersomnia
Posts: 13
Joined: Wed Dec 15, 2010 2:44 pm
Year and Model: 1999
Location: Orlando
Has thanked: 0
Been thanked: 0
hypersomnia

Re: S80 sputtering, won't accelerate

Post by hypersomnia » Sun Dec 19, 2010 7:36 pm

I replaced a new one, it does not work, still the same situation, what should i do?



Rustypig
Posts: 13
Joined: Thu Feb 14, 2008 10:12 pm
Year and Model:
Location: Great Falls Montana
Has thanked: 0
Been thanked: 0
Rustypig

Re: S80 sputtering, won't accelerate

Post by Rustypig » Sun Jan 02, 2011 7:32 am

Check the intake plenum tube (big one) going into the bottom of the intake manifold, the one with the sensors in it. If it has come loose at intake manifold it will act exactly as you describe. Had this happen and it left me scratching my head until I happened upon it.


Our first 240 saved us twice we are a living testament to Volvo safety. The S80 T6 is "just because I could" and it's a fun drive!

hypersomnia
Posts: 13
Joined: Wed Dec 15, 2010 2:44 pm
Year and Model: 1999
Location: Orlando
Has thanked: 0
Been thanked: 0
hypersomnia

Re: S80 sputtering, won't accelerate

Post by hypersomnia » Sun Jan 09, 2011 12:06 pm

You mean the sensor become loosen or the plenum tube?
Somebody told me it may because of the fuel pump or the fuel filter, I will try your suggestion first, thanks.
You have a great day.



hypersomnia
Posts: 13
Joined: Wed Dec 15, 2010 2:44 pm
Year and Model: 1999
Location: Orlando
Has thanked: 0
Been thanked: 0
hypersomnia

Re: S80 sputtering, won't accelerate

Post by hypersomnia » Sun Jan 09, 2011 8:32 pm

I checked the sensor on the plenum tube, all should be fine.

On the other hand, I went to maintainance the other day, a guy adjusted the idle, it stays on 1500 rpm now rather than 600-700 previously. But it still does not work, it seems like no matter how you push the pedal, it just dont accelarate. It takes half a mile to reach to 30 mph, but that's it. I feel somewhere is blocked, like fuel filter. The fuel pump should be fine, coz if it is down, then the car wont start.

I think I need to find a chance to find a mechanic to take a look at it.

Are there anyway that I can check and exclude the possibility by myself?
Anybody can help?

I really appreciate it, I know there are many professions here. Thank you guys.



boosted5cyl
Posts: 1100
Joined: Fri Jan 29, 2010 12:52 pm
Year and Model: '98 V70 T5, '99 S80
Location: St. Paul, MN
Has thanked: 0
Been thanked: 0
boosted5cyl

Re: S80 sputtering, won't accelerate

Post by boosted5cyl » Mon Jan 10, 2011 10:10 am

hypersomnia wrote:On the other hand, I went to maintainance the other day, a guy adjusted the idle, it stays on 1500 rpm now rather than 600-700 previously.
Well thats scary! What did he to to change the idle speed? I bet the tranny is loving that! Vibration usually points to a misfire. Is it still rough after the idle change? Pull the spark plugs and examine them, it might tell you something about whats going on in the cylinders.

Still no CEL? You could get the codes pulled anyway. Im assuming the CEL lights up before you start the engine?


'04 XC90 2.5T AWD (Angus) 134K.
'99 S80 T6 (Medusa) 214k. On borrowed time LOL
'98 V70 T5 (Vivienne). RIP @ 228K. Spun rod bearings.

Post Reply