EGR Low Flow - speedometer cable length
 

Hey all, I've got the EGR low flow code on my 96 C280 and I had an indie shop supposedly clean the EGR tube that needs cleaned noted in the DIY section here, they said they did it but I have doubts that it was done right. They had never done it before when I mentioned it to them. Like everything else almost, if you want it done right you have to do it yourself. I have replaced the EGR valve, replaced the switch-over valve, put in new vacuum lines and would like to know how long a piece of speedometer cable I will need to run through the tube to clean it myself, as I am still getting the EGR low flow code and CE light, which is bugging me to death. The shop is saying, possible wiring harness, but I don’t want them guessing at it until I know it’s not something simple. So, if someone knows the tube is 20" or 30" or whatever please let me know how long a piece I will need to make sure it’s cleaned all the way through. I doubt it’s the wiring harness, because its not random, it always comes on at a stop light just after pressing the brake.

Thanks,
Brad

That last 3 or 4 inches are the hardest to clear out. If it is like the 95 E320 it is hard to get around that last 90 ell. If all the stuff that you mention has been replaced then I would suspect they did not get all the way through it.