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Xc90 limp mode on acceleration

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Old Jul 14th, 2022, 01:43   #1
naveedy
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Default Xc90 limp mode on acceleration

Hi

I am interested in any help on my XC90 2010 150,000 miles

Getting engine system service and loss of power limp mode on acceleration

Got an isoft diagnostic got the codes

ECM -1540 and ECM 1507

Had reset but recurs after acceleration to around 35 miles per hour or more

No turbo noises or hissing noises to suggest a damaged hose

Any ideas appreciated if it’s a quick fix rather than spending lots to just diagnose

Had swirl flaps and egr valve cleared a few years ago

Thanks
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Old Jul 14th, 2022, 08:40   #2
Tannaton
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That's a boost control issue, both too low and too high. It could be a leak or a turbo vane actuator issue. First step would be to check for leaks, they're usually the cheapest to fix.

If you have access to VIDA, I would have someone sit in the passenger seat with the laptop and log live data as you drive.

This may help :

https://volvoforums.com/forum/volvo-...mp-mode-88471/

PS - good man getting the codes read, much easier to help....
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Old Jul 14th, 2022, 17:41   #3
naveedy
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Thanks much appreciated
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Old Jul 22nd, 2022, 00:08   #4
naveedy
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Default Turbo actuator

Hi guys took to a really good independent in Stockport - turned out to be a turbo actuator valve - the guys diagnosed and fitted a refurbished one all for £225 - driving smooth now !
No check engine light ! Such a small part creating such havoc !
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Old Jul 22nd, 2022, 00:36   #5
Harley Dave
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Quote:
Originally Posted by Tannaton View Post
That's a boost control issue, both too low and too high. It could be a leak or a turbo vane actuator issue. First step would be to check for leaks, they're usually the cheapest to fix.

If you have access to VIDA, I would have someone sit in the passenger seat with the laptop and log live data as you drive.

This may help :

https://volvoforums.com/forum/volvo-...mp-mode-88471/

PS - good man getting the codes read, much easier to help....
Good call Tannaton

Cheers

Dave
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Old Jul 9th, 2024, 22:22   #6
Brydekirk
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My fault codes are 1540 and 1517.
Will that be the same problem?
Thanks in advance 👍
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Old Jul 9th, 2024, 23:31   #7
Kev0607
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Quote:
Originally Posted by Brydekirk View Post
My fault codes are 1540 and 1517.
Will that be the same problem?
Thanks in advance 👍
Likely a similar issue.

Check for leaks from hoses first. A loss of vacuum pressure from a split hose for example can cause issues with power. Failing that, it could be the same issue that the other person had (turbo actuator valve).
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Old Jul 10th, 2024, 14:59   #8
DazN
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Mine's currently doing the same... We think it's the actuator but struggling to find a genuine refurbished one.

Found a place in Leicester that will rebuild it, but waiting on getting VIDA set up so we can hopefully confirm if it's the actuator.
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engine system service, turbo, xc90


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