P0234, bad trubo?

calbear · **Posted:** Wed Jan 12, 2011 5:23 pm

I go up to the mountains every weekend. Lately my Jeep grew the habit of throwing P0234 code driving uphill. This usually happens 10-15 mins into the climb and usually clears with 3 ignition cycle trick.

However last weekend the code kept on coming back so I believe there is something very wrong with the boost system.

I checked all the hoses for cracks. Cleaned MAF and MAP. So what is left is the turbo could be going weak.

Has anybody else had a similar problem?

What kind of turbo does 2006 KJs use and what will it cost?

my second guess it could be related to exhaust system, especially the cat. any comments on this guess?
thanks

Joe Romas · **Posted:** Wed Jan 12, 2011 9:54 pm

Welcome to LOST :BANANA:

Have you read Sir Sam's noob guide yet?

You have to remove the boost hoses to inspect them.
Have you ever cleaned your MAP sensor?

We have a Garrett Research VNT turbo but I don't remember the model but it's a big brother of what VW uses on their TDI's. It is controled by a vacuum module so if there's any bad hoses on the passenger side near the firewall that might cause your problem. There's also a little clear plastic filter in that area that's supposed to be replaced every so often too but I don't recall it ever causing a problem.
Do you hear any air rushing from a split hose?
How long has it been since you changed your air filter?

The cat has been identified in a couple of instances. Remember our VM engine it of Italian hertiage so it needs a Italian tune up every day :-)r

If your not famliar with the term it's a good hard run on the interstate to clean the cat out. Here's a link to the tdi club where it's explained.
http://forums.tdiclub.com/showthread.php?t=229760

Sir Sam · **Posted:** Wed Jan 12, 2011 11:30 pm

calbear wrote:

I checked all the hoses for cracks. Cleaned MAF and MAP. So what is left is the turbo could be going weak.

Joe Romas wrote:

Welcome to LOST :BANANA:

Have you read Sir Sam's noob guide yet?

You have to remove the boost hoses to inspect them.
Have you ever cleaned your MAP sensor?

But yes calbear, it sounds like you have, but if you haven't read the noob guide.

calbear · **Posted:** Thu Jan 13, 2011 2:11 am

yes yes I read the guide many times. I've been a lurker on LOST for too long :oops:

calbear · **Posted:** Thu Jan 13, 2011 2:18 am

Joe Romas wrote:

Do you hear any air rushing from a split hose?
How long has it been since you changed your air filter?

Hoses look, feel, sound fine. The only different noise comes under heavy throttle, there is extreme vibration from something near the passenger side fender.

Air filter was replaced in late July along with fuel filter and oil.(4500-5000 km ago)

ATXKJ · **Posted:** Thu Jan 13, 2011 12:22 pm

Not sure how to check - but the vacuum system Joe mentioned - it adjusts the vane angle on the turbo - so it would only engage on certain power demand situations, if it's not cycled occasionally it can get sticky.

although hoses are still the most likely - almost everyone over 40-50K has had them split - some of the smaller splits don't show until they're under pressure - although they'll eventually burst.

racertracer · **Posted:** Thu Jan 13, 2011 2:30 pm

I had an issue with my turbo vanes sticking and throwing the same code.

GDE suggeted I continually try to move them free using this (http://www.amazon.com/Hand-Vacuum-Pump- ... B0017YC876) vaccum pump connected to the vaccum port on the turbo and use the device to free the vanes and also to drive it hard for a while going up a hill to free the vanes loose from the gunk that had built up around them.

It did clear it up, but I had to work at it for many hours, weeks actually.

calbear · **Posted:** Thu Jan 13, 2011 5:24 pm

i cannot find anything wrong with other components of the boost system so seems i will have the turbo removed for an inspection and clean up.

labor is cheap over here, why not take advantage :SOMBRERO:

racertracer · **Posted:** Thu Jan 13, 2011 11:20 pm

calbear wrote:

labor is cheap over here, why not take advantage :SOMBRERO:

Where's here?

calbear · **Posted:** Fri Jan 14, 2011 1:48 am

racertracer wrote:

calbear wrote:

labor is cheap over here, why not take advantage :SOMBRERO:

Where's here?

Turkey

I remember from my years in the states that hour cost of maintanence was 3-4 times what I have to pay now. :dizzy:

Joe Romas · **Posted:** Fri Jan 14, 2011 7:53 am

racertracer wrote:

calbear wrote:

labor is cheap over here, why not take advantage :SOMBRERO:

Where's here?

Since his location says "Turkey" I suspect that's where he is :BANANA:

calbear · **Posted:** Fri Jan 14, 2011 8:45 am

Joe Romas wrote:

racertracer wrote:

calbear wrote:

labor is cheap over here, why not take advantage :SOMBRERO:

Where's here?

Since his location says "Turkey" I suspect that's where he is :BANANA:

I added that after the question :wink:

P0234, bad trubo?

Who is online