With Steve's comments and pik in mind, I seriously doubted that I could do the job, but I decided to do one more look see. This time Lady Luck was on my side. On the upshift delay valve, I found a 2" semicircle shaped vacuum hose with both ends severely cracked. Knopf MB graciously gave me a piece of generic hose. After installing it, I cleared the code and the "Check Engine" light hasn't come back on.

To reward myself and give a little back to the dealer, I bought a MB key chain. I told my wife the hose cost $14 and the key chain was free because of a Father's Day promo. She believed me on the cost of the hose expecting the high cost of MB parts.

The car was due for a trans service and the check engine light prompted the trans service. $150 for parts & labor for trans plus $27 for the diagnosis. That’s fair. But, now I face a dilemma. My inde estimated the cable job at $375. Although it could be an honest mistake but, I’m surprised they didn’t see the bad hose. Although, I don’t expect a reimbursement on their labor to do the estimate, I plan to explain my free fix to the service writer. Obviously, my faith in them is greatly diminished.

Your comments are appreciated.

Bob