I have a bit of an update. I just bought an Actron scanner off eBay and received it today. I hooked it up to my 1998 ML320 and it only gave me one code, P0400, which is the EGR valve or from what Ive read the tube. I will have to find a place where I can tinker with removing and cleaning the EGR valve and tube to see if I will need a new one or not.

My question is this...If the TCM is bad, would it show up on the scanner? The check engine light is not on, so I was surprised to see the EGR code in there. Thanks for any help.

I cant wait for my wife to get home with my 94 S320....Im sure it will have quite a few more codes because it has been running like crap lately. I hope I dont see EGR code on s class because my shop was supposed to have cleaned out the EGR tube, and I replaced the EGR valve with a new one just for s*&U('s and grins.

C

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1994 S320
131K miles

1998 ML 320
126K miles

1994 Blue C220
122K miles

Im going to Grad School @ the University of Iowa
Go Hawkeyes!!!