So a few weeks ago I was coming up a mountain and the engine in my 2003 Sprinter T1N blew up. Breached cylinder - oil cap blew off, the works. Fast forward I got a new (used) engine put in by Mercedes. They called me today to tell me everything is working except for whatever reason it isn't shifting into "passing gear" which I understand to be when you floor it on the freeway it down shifts for a short period of time to give you a little boost to get up to a higher cruising speed (right?).
When he mentioned it I recalled that I had experienced that the day before my engine blew up. I was expecting it to go into passing gear at a certain point while I was driving it up this mountain but it didn't. I dismissed it at the time thinking maybe I didn't have the feel for when it shifts like that quite right.
So I have two questions:
1. Could lack of a shift into passing gear while driving up a mountain over-tax the engine to the point that it blows it up? I would think if it didn't shift into passing gear you would just slow down, right? When the engine blew up I was cruising at 65mph around 3000-3200 RPM IIRC.
2. What would cause it to stop shifting into passing gear? He said probably a bad shift module and recommended I just not worry about it because it would involve taking the transmission apart to fix.
When he mentioned it I recalled that I had experienced that the day before my engine blew up. I was expecting it to go into passing gear at a certain point while I was driving it up this mountain but it didn't. I dismissed it at the time thinking maybe I didn't have the feel for when it shifts like that quite right.
So I have two questions:
1. Could lack of a shift into passing gear while driving up a mountain over-tax the engine to the point that it blows it up? I would think if it didn't shift into passing gear you would just slow down, right? When the engine blew up I was cruising at 65mph around 3000-3200 RPM IIRC.
2. What would cause it to stop shifting into passing gear? He said probably a bad shift module and recommended I just not worry about it because it would involve taking the transmission apart to fix.