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94 940T NOx fail 900

posted by  rjk2 on  Sun Feb 24 06:23 CST 2013
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last visit: Sat Jun 21 05:30 CST 2014
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So, I had good run yesterday and put the car up right after, case temp for the CAT was 230 C (445+ F) dead center.

I had checked for obvious leaks right after start-up around the exh mani & turbo but could not find any.

I let it cool then pulled the downpipe. There is some telltale leakage around the pipe union where it joins the CAT. I don't have time to pull the mani but will make sure all bolts are snug & reinstall the downpipe. If I improve the situation, the noise level (which only manifests under power) should improve.

I wonder if the cracks around the exh mani goilet could be opening up enough to allow air to enter.
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1999 E320-200K 1994 F150 (awaiting a new engine) 1989 560 SL-180K 1994 945T (daughter's)-312K 1986 242Ti (awaiting a B230FT transplant) 1968 GT500KR (under slow restoration) 2007 HD Nightster (son's ride)






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New 94 940T NOx fail [900]
posted by  rjk2  on Thu Feb 21 18:38 CST 2013 >


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