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) in readiness for the cars MOT. The car wouldn't rev and smoked horrifically as the EGR had jammed open. I blanked off the EGR and put the remap back on but i now have a lack of power.
| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17458   
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Check the condition of the wiring harness from the ECU to the turbo actuator. It is common for chafing problems to occur.
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22nd May 2019 2:10pm |
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| DarrenJ Member Since: 07 May 2012 Location: North Beds Posts: 312 
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Cheers, l’ll check the loom tomorrow, is there a particular area to look at?
Cheers again Darren |
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22nd May 2019 8:35pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17458
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Anywhere it touches or is secured to the engine, and if you have a/c check where it runs over the compressor.
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22nd May 2019 8:50pm |
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| skidrov Member Since: 06 Oct 2013 Location: Melbourne Posts: 56  
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I had a very similar scenario. For various reasons I went from my BAS map (EGR always closed) to standard (EGR cycled). I had not run the standard map for many months and so the EGR valve was well coked up, and jammed.
Similarly, power was down. I put in an EGR blanking plate and things improved slightly. However, I had DTCs indicating that the EGR valve was jammed open. My (wild unsubstantiated) guess was that the ECU knew that the EGR was jammed open and, even when I went back to the BAS map which doesn't cycle the EGR, limited something (no idea what - perhaps the turbo actuator, as you suggest) that limited power. I removed/replaced the EGR valve (not a fun job...) and things returned to normal. BTW, you can get a very cheap EGR on AliExpress - if you are not cycling it 'coz you have a remap, I would suggest this is a good option if you have to go that route. But - you said you had no fault codes - I would expect you should have some if the EGR valve is jammed open. I used FORScan, and definitely had "your EGR valve is jammed" codes (sorry, can't remember what they were). Can I ask what software is telling you that there's no fault codes? |
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23rd May 2019 9:42am |
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| DarrenJ Member Since: 07 May 2012 Location: North Beds Posts: 312
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Thanks for the response.
I’m using the BAS tool to read the codes, no faults logged and the dash light is not lit. Ironically when I put he standard map back on no fault codes are logged and the engine management light stays on. I cleaned the MAF again last night, didn’t do a great deal and I checked the wiring this morning but didn’t find anything obvious. I did unplug the actuator and clean up the connections this am and things have improved, turbo did get to 9% earlier and there is a lot more power, still down a little I’d say. Cheers Darren Darren |
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23rd May 2019 10:16am |
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| skidrov Member Since: 06 Oct 2013 Location: Melbourne Posts: 56
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EML on and no fault codes doesn't sound right - might be worth trying another tool and/or checking with BAS.
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23rd May 2019 10:36am |
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| DarrenJ Member Since: 07 May 2012 Location: North Beds Posts: 312
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Oops, the EML stays off and no are fault codes logged on either standard or remap.
If you remove the EGr can you force it closed and then refit? Cheers Darren |
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23rd May 2019 10:52am |
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| skidrov Member Since: 06 Oct 2013 Location: Melbourne Posts: 56
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Probably, but you won't know for sure til you get it out. I replaced mine, but cleaned up the old one out of interest. It took about an hour (once out) and a bit of brake cleaner. Thing is, it's such a pig to get out/in that I chose to go for the new one. It was $AU 90 to my door.
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23rd May 2019 11:04am |
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| DarrenJ Member Since: 07 May 2012 Location: North Beds Posts: 312
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All sorted!
Thank you for the advice. I checked the turbo wiring and removed the connector, cleaned with electrical contact cleaner and also cleaned the MAF again, full power has returned and a brucie bonus of a bit more too  Darren |
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25th May 2019 5:59pm |
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