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Faulty Turbo I have a VW LT 35 2006, The Turbo blew on it last year, I brought a 2nd hand one, had it fitted and the van stayed in Limp mode 80% of the time, this was subsequently returned to this garage and a replacement was sent and fitted. This was 6 months ago and since then this Turbo has goes into limp mode probably 10% of the time, but driving home the other night this one blew too. I have just sourced new refurbished one and am hoping to have that fitted Monday. Any suggestions as to why this is repeatedly happening ?? Thank you

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  • Volkswagen Master
  • 22,219 Answers

Now if i knew what you meant by blew ?? then i might have a idea --most turbo faults are caused by dirty oil and changing the engine oil every 5000miles with a filter every third oil change will stop this problem .The other problem is the turbine vanes breaking off or being damaged by grit where the air filter is missing or a pipe loose or split allowing the thing to suck in unfiltered air but i do know someone with one of these and he sold it in the end and bought a transit as the turbo gave up quite often ,but without taking the turbo apart then i couldnt tell you why they are failing but i do know he kept a small hand held diagnostic machine in the cab and when it went into limp mode he cleared the codes and off he went again .Seem to remember as well the waste gate operating piston playing up i think a rubber tube perished so it didnt open and the increase in pressure as the engine revved up caused the thing to go into limp mode as too much pressure was being generated ,the rubber tube goes from the pressure side of the turbo to the piston its about 4cms long so as the air pressure builds up it this pressure pushes the piston which opens the waste gate which is a little flap on the exhaust side of the turbo into the exhaust manifold so when it opens it allows the exhaust gas pressure to go straight down the exhaust pipe releaving pressure on the turbo vanes .If the pressure in the inlet side goes too high then a sensor will put the engine into limp mode .Hope you understand this technical jargon ?

Posted on Feb 07, 2014

Testimonial: "thank you for your suggestions, in saying the turbo blew,i mean just driving along and the turbo stopped working, loss of power, plumes of grey smoke from the exhaust. I did have a total new engine fitted say three before all this turbo problems started."

  • angela jenkins
    angela jenkins Feb 08, 2014

    thank you for your suggestions, in saying the turbo blew,i mean just driving along and the turbo stopped working, loss of power, plumes of grey smoke from the exhaust. I did have a total new engine fitted say three before all this turbo problems started.

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Posted on Jan 02, 2017

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dr_greg
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SOURCE: 1998 honda accord transmission goes into limp mode

the vehicle may have a electrical problem and or mechanical problem in the trans....id try replaceing the solenoids and then the entire transmision and torque converter.

Posted on Apr 05, 2009

  • 1779 Answers

SOURCE: limp home mode

You need to scan for engine trouble codes. Most parts stores will do this for free, and tell you what they mean and make recommendations on what to do. The 'limp mode' kicks in to prevent damage to the vehicle when the computer gets data that something is wrong.. When you shut it off, it's temporarily reset, but then the cars computer is signaling there is still a problem, and it goes back into limp mode. If you have any questions after getting the codes 'read' , post questions and code #;s here for help. Good luck.

Posted on Apr 28, 2009

  • 1 Answer

SOURCE: My Audi A3 2.0 tdi limp mode/turbo overboost

i also have done a diagnostic test and it states a turbo overboost condition and it drives fine locally but loses power on the motorway and struggles to reach 80mph? any suggestions please email me at shiz86@hotmail.co.uk

Posted on Sep 14, 2009

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The trouble began by my van not shifting out of 2nd care... van had gone into limp mode. Shortly there after, the engine light came on and my van started to overheat. We ran the codes and got PO720,...


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Heed of antifreeze coolant temperature!!!


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Thermostat checking:
1. Cold engine. Start up the engine and watch of the water temp indicator. After first value 60 Celsius Degree you still warm up the engine until the lifter (pointer) reach 80 C deg. (second mark after 60 C deg.). At this time you let engine running at idle speed and check with your hand the thermostat plastic housing and hose temperature in bottom left side of the engine. Heed of alternator driving belt and ventilator fan !!!
2. If the thermostat is good the hose must be cold until the water temp indicator reach almost 90 C deg.
3. The thermostat opening temperature is 87 C deg.
4. If the hose is already warm the thermostat is out of order.

Thermostat location, Part number: 044121113, in german - "Kuehlregle" (Price around $25):
tdisline_211.jpg


Important note: Always replace the thermostat seal, position 7 in the above picture.


Please do rate my response. Thanks!


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