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#1
06-12-2006, 08:55 PM
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Got my DTC...how do I fix it?
I had a local shop read my DTCs and there was a 19 and a 26 stored.
I read the 19 has something to do with injectors and the 26 has something to do with an upshift delay relay in the transmission. How do I troubleshoot further? The codes were reset and the CE light went off for about 10 miles and it came back on. The engine runs perfectly...the transmission shifts a little hard and is slow to engage reverse...but nothing terrible. Thanks for any advice as to my next step.
__________________
1995 E300 Diesel 1994 E320 1999 C230K 1994 S500 W140 1990 300 SEL 
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#2
06-12-2006, 09:28 PM
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Ok, did some research and seem the code 19 can be fixed with an eprom update....but most of the threads about this are old (2001). Is this still the fix for a code 19 and if so where do I get an updated eprom? Do the performance chip address this problem?
Thanks
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1995 E300 Diesel 1994 E320 1999 C230K 1994 S500 W140 1990 300 SEL
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#3
06-13-2006, 10:43 AM
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I've sent your replacement eprom this morning so you will be all
 after you install it!
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#4
09-11-2006, 10:00 PM
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Jim,
You were right, Have been using your prom for months now..no more code 19. But I am still getting a code 26...I have searched all over my S500 (94) for this vacuum line that could be causing it...and I cannot find it...any help is greatly appreciated.
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1995 E300 Diesel 1994 E320 1999 C230K 1994 S500 W140 1990 300 SEL
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#5
09-12-2006, 12:14 AM
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Check out MENU#1 in the system diagram; the upshift delay switchover valve is shown (Y3/3) driven from the LH ECU (N3/1).
You are just another stat for the new prom It has fixed every instance of the DTC#19 problem.
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#6
09-14-2006, 09:11 AM
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OK, I see it on the diagram, but still can find it in the car. Does the diagram represent the approx. physical location in the car itself?
Thanks
__________________
1995 E300 Diesel 1994 E320 1999 C230K 1994 S500 W140 1990 300 SEL
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#7
09-14-2006, 10:53 AM
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In my car, Y3/3 is located under the drivers side 'facade' cover next to the accumlator/drier and the low side A/C port. It's easily identified b/c of the two vacuum lines attached.
There's also a 'relay', K29 which is called the "upshift delay" module. It's located under the fuse panel in the right corner. It the 'last' relay that's closest to back side.
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