2009 1.6 CRDI stuck in limp mode - MAP dead? - Page 2 - Kia Forum

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post #11 of 17 (permalink) Old 08-26-2018, 12:08 PM Thread Starter
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Because I don't know when to give up, I purchased a new fuel filter and fitted it today with the help of this excellent guide - I have had the car for over a year and so it's at least a year since this was done.

The diesel that came out of the filter did have crap in it, which makes sense. The new filter has added to the continual improvements in performance since I started, but the turbo basically still spins up and then cuts out. My next suspicion on the list (it has been a big list!) is the intake hose, as the wire clamp at the turbo end won't tighten properly - the thread seems to be broken somewhere, and it only tightens up enough to gently hold it on - it's still possible to turn it. So, the next thing on the fix list is a new clamp, and - failing that - a new hose.

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post #12 of 17 (permalink) Old 09-14-2018, 08:37 AM
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The diesel that came out of the filter did have crap in it, which makes sense. The new filter has added to the continual improvements in performance since I started, but the turbo basically still spins up and then cuts out. My next suspicion on the list (it has been a big list!) is the intake hose, as the wire clamp at the turbo end won't tighten properly - the thread seems to be broken somewhere, and it only tightens up enough to gently hold it on - it's still possible to turn it. So, the next thing on the fix list is a new clamp, and - failing that - a new hose.[/quote]

i was just wondering if you made any progress with this as I have the same car with the same issue, and so far have tried the same things as you have to remedy the situation with no avail, that's when I ended up here lol. have you come to a conclusion?
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post #13 of 17 (permalink) Old 09-17-2018, 03:07 PM Thread Starter
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Originally Posted by tomsmith1988ts View Post
i was just wondering if you made any progress with this as I have the same car with the same issue, and so far have tried the same things as you have to remedy the situation with no avail, that's when I ended up here lol. have you come to a conclusion?
I have made progress, but still not completely fixed. Since the last update I have reliable low-level boost, but it still cuts out and sometimes drops into limp mode when high boost is requested by the ECU.

Having done some more research, I have narrowed it down to either a vacuum leak to the turbo vane actuator, or simply a build up of carbon on the vanes in the turbo. I can pull the actuator by hand and can see it open and close when the car is started, so the next step is either a can or bottle of Wynn's turbo cleaner to see if clearing off some of the buildup of crap on the turbine side helps. If it doesn't, I'll need to hunt for a vacuum tester.

To sum up, I've worked through the following so far and one or more of them got me to where it is now:

- Replaced air filter
- Replaced MAF sensor
- Replaced MAP sensor (the one between the manifold and intercooler=
- Replaced fuel filter
- Replaced clamp on turbo intake end of air hose
- 3 bottles of diesel system cleaner
- A few tanks of premium diesel (probably had more effect than the system cleaner lol)
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post #14 of 17 (permalink) Old 09-19-2018, 12:18 AM
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Glad to see your making head way with it, for the most part I'm at the same point as you are, will try and look at the vacuum levels over the weekend. Thanks for you very detailed posts, helping me down the right track
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post #15 of 17 (permalink) Old 10-22-2018, 05:38 AM
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Update us

Hi there! Please do update us with any progress you make, I am a new owner of a 2010 EcoDynamics model and am experiencing similar symptoms though not as severe. I'll be interested to see any developments from you!

Thanks for all the updates so far!
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post #16 of 17 (permalink) Old 10-22-2018, 08:15 AM Thread Starter
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Originally Posted by tomsmith1988ts View Post
Glad to see your making head way with it, for the most part I'm at the same point as you are, will try and look at the vacuum levels over the weekend. Thanks for you very detailed posts, helping me down the right track
Quote:
Originally Posted by bluiska View Post
Hi there! Please do update us with any progress you make, I am a new owner of a 2010 EcoDynamics model and am experiencing similar symptoms though not as severe. I'll be interested to see any developments from you!

Thanks for all the updates so far!
Hi - thanks for letting me know the thread is useful!

My in-laws had the bonnet up on their Mercedes B200 last weekend, and I noticed that their turbo is a) conveniently at the front of the engine, and b) also a VNT like ours. I took the opportunity to waggle their actuator and noticed that it was much, much easier to move than mine! If you can reach the turbo on your Kia, a rough guide is that you should be able to push the actuator up without it physically hurting

This put me straight to the 'stuck vanes' theory, so I went to my local Wynn's distributor for Germany and found they didn't have any Diesel Turbo Cleaner, haven't had any for weeks, and didn't know when they would have any. I mailed Wynn's, and they told me they might be shipping some to distributors by the end of this month...

So, back to research. It seems that Wynn's Extreme EGR Cleaner can be used in the same way (i.e. sprayed into the turbo inlet), cleans the turbo vanes on its way to the EGR valve, and (helpfully) cleans the EGR valve too. I am ordering some this week and will have a go this weekend - I'll let you know how this goes.
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post #17 of 17 (permalink) Old 02-05-2019, 05:13 AM
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Hi there,

I have a 2009 2L Ceed Sport CRDi with the same issues you have had and was wondering whether the cleaner solved or improved the issue at all?

Cheers
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