Hello all,
I seem to have an issue and I cant seem to pinpoint where the problem is. I'm also not quite sure about whether or not my issue is the surging issue that a good number of others here are having. Basically, my vehicle tends to not be smooth when accelerating from a stop. I hit the gas and it starts accelerating, resists acceleration for a second, and repeats twice or three times and feels really choppy. I'm thinking this might be the same as the surging problem, as the RPM's seem to go up, stop, go, stop and so on, but I'm posting just to make sure. I know that it could be the MAF or the TCV but I just want to see what everyone has for input.
2000 S80 T6 hesitation when accelerating from a stop
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BobbyMang
- Posts: 20
- Joined: 7 April 2013
- Year and Model: 2000 S80 T6
- Location: Nashua, New Hampshire
2000 S80 T6 hesitation when accelerating from a stop
2000 S80 T6 -IPD HD Turbo Control Valve w/ Silicone tubing, K&N Air Filter, IPD Strut Bar Conversion kit, Ultra Racing rear chassis bar, IPD "R Kelly" CAI Kit, IPD Poly Upper Engine mount.
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Eldoninoz
- Posts: 63
- Joined: 20 December 2010
- Year and Model: S80 1999
- Location: Spokane Washington
- Been thanked: 1 time
Just an idea based on what I saw on my car, one of my wastegates was not closed at the proper pressure, it was open at least 25% at no pressure and the proper pressure was 6.5 psi. It may be one of the wastegates is opening prematurely, or may even be the actuator is leaking causing an inconsistent boost issue. It just an idea to check seeing I saw that problem on my 99 T6 while rebuilding it.
You can check the actuators by pressurizing the line from the TCV to the turbo hard line on the back of the valve cover, I used one of the cooling system testers, pumped it up to 6.5 and watched to see if there was a leak in the system. It there is check the short lines from the hard line to the actuators (2 inch soft line on each turbo). If there is a leak and the short soft lines are fine then it will be one of the actuators. If it is an actuator you will have to find a donor turbo with a good on as you can not find one online for the small turbos used on the T6. If you do go to a salvage yard ensure the actuator is good before you get it, I had to go through 3 turbos at the local "auto recycler" before I found one with a good actuator.
Also checking all the vacuum lines, they get a bit porous as they get older. It is always best to check the small things before you dump a lot of money in it when something small will fix it.
You can check the actuators by pressurizing the line from the TCV to the turbo hard line on the back of the valve cover, I used one of the cooling system testers, pumped it up to 6.5 and watched to see if there was a leak in the system. It there is check the short lines from the hard line to the actuators (2 inch soft line on each turbo). If there is a leak and the short soft lines are fine then it will be one of the actuators. If it is an actuator you will have to find a donor turbo with a good on as you can not find one online for the small turbos used on the T6. If you do go to a salvage yard ensure the actuator is good before you get it, I had to go through 3 turbos at the local "auto recycler" before I found one with a good actuator.
Also checking all the vacuum lines, they get a bit porous as they get older. It is always best to check the small things before you dump a lot of money in it when something small will fix it.
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