Now it'll start just fine, rev up just dandy in neutral, haul ass down the road in reverse, but when put in any of the forward gears it will begin to sputter, run quite rough and then stall out.

Does the K40 interface between the transmission and the fuel controls?

Any ideas? I just threw a new fuel shutoff valve on there to no avail.

Thanks folks.

Bill

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1998 E300 +310,000K
1996 E300 +460,000K