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02 S80 T6 Surging

  #1  
Old 12-07-2006, 01:44 AM
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Default 02 S80 T6 Surging

I was reading on these forums and found a post about the valve and possibly the throttle body. It runs just fine goin down the highway gets about 27-30 miles per gallon, however if I slam the gas it surges or pulses I should say...I just bought this vehicle with 42000 miles. Just a couple questions below...

Is the software upgrade a free deal?

How much is the turbo valve to replace?

how much is the throttle body?

Also my rear left door seems to think it's open sometimes i open and shut it and it goes off...but I will be goin down the road and it just comes on, any ideas as to what's causing this?


 
  #2  
Old 12-07-2006, 08:43 PM
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Default RE: 02 S80 T6 Surging

The ETM software is free.
If the ETM needs to be replaced it will be free. 10 years 200,000 miles is the warranty on it.

You might also be missfiring as well.


For the door lock it is going bad.
 
  #3  
Old 12-07-2006, 08:54 PM
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Default RE: 02 S80 T6 Surging

the pulsing is the turbo control valve located on the side of the Airbox, notorious.. 3minutes replace also..
 
  #4  
Old 12-07-2006, 11:48 PM
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Default RE: 02 S80 T6 Surging

Thanks for the input both of you, and yes I quoted a fix for the control valve at about $75 fixed. The door thing I was talking about was the sensor goes off and the computer thinks the door is open when it's not. I may have a wiring problem to attribute to the door sensor as my rearview mirror has no power whatsoever and it's supposed to have autodim and seatbelt lights.
 
  #5  
Old 12-08-2006, 12:09 AM
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Default RE: 02 S80 T6 Surging

I doubt a wiring problem the lock go bad VERY often.

The rearveiw is a different issue.

Does the door locks work with the remote?
 
  #6  
Old 12-08-2006, 12:12 AM
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Default RE: 02 S80 T6 Surging

No nono the door locks just fine, the sensor just thinks the door is open sometimes if I hit a bump or at random. Has nothing to do with the door not locking, it locks and unlocks just fine as far as I know. I was just thinking that possibly the two could be related as it's random and has to do with wiring most likely.
 
  #7  
Old 12-08-2006, 12:19 AM
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Default RE: 02 S80 T6 Surging

But you don't understand what I am explaining.

The switch that tells the computer that the door is open and to turn the lights on is in the door lock assembly.

It is all one piece.

They are very common to go bad It all stems from the door locks getting lubbed like the old cars.
Everyone lubes the locks when doing oil changes.

That wipes out the switches in the assembly over time.

Causing the problems: Saying the door is open when it isn't,The door locking then unlocking by itself,The locks not working at all.

Hopefully I cleared it up some for you.
 
  #8  
Old 12-08-2006, 10:45 PM
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Default RE: 02 S80 T6 Surging

Rgr that...appreciate it Tech! I will have them look at it when I take it in this next week.
 
  #9  
Old 12-09-2006, 12:06 AM
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Default RE: 02 S80 T6 Surging

Keep me posted.
 
  #10  
Old 12-16-2006, 02:36 AM
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Default RE: 02 S80 T6 Surging

It has been fixed....


As suspected it was the Turbo Control Valve.


$80 Fixed!
 
  #11  
Old 12-16-2006, 10:45 AM
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Default RE: 02 S80 T6 Surging

Glad it is fixed.
 
  #12  
Old 05-08-2007, 01:04 PM
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Default RE: 02 S80 T6 Surging

Guys, were exactly is this control valve located, where in the airbox? I was told I need to replace it, is it really simple?
 
  #13  
Old 05-08-2007, 02:13 PM
Join Date: Feb 2007
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Default RE: 02 S80 T6 Surging

It clips to the back of the airbox and has 3 hoses going to it. The hoses can be tough to get off sometimes, I had to cut mine.
 
  #14  
Old 05-08-2007, 04:23 PM
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Default RE: 02 S80 T6 Surging

Never mind, I think I found it
http://home.comcast.net/~donwillson/tech_info.html
 
  #15  
Old 05-08-2007, 04:26 PM
Join Date: May 2007
Posts: 8
Default RE: 02 S80 T6 Surging

Thank you, just found it. Could you also point me in the right direction where the Throttle Body is? I figure I'll clean that as well.
 
  #16  
Old 05-11-2007, 11:39 PM
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Default RE: 02 S80 T6 Surging

DO NOT CLEAN IT, cleaning the ETM allowed the cleaner to get on the throttle blade and the shaft, when it gets on the shaft it runs down into the electronics, it can and will mess it up..
 
  #17  
Old 05-14-2007, 09:19 AM
Join Date: May 2007
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Default RE: 02 S80 T6 Surging

I did decided not to clean it.
 
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