I got my car back from a garage today (94 accord wagon ex non vtec i-4)), I had the engine replaced with a used one. The old engine had 325 000 and blew its second water pump under 75000. I figured it would be just as wise to replace the motor for 1100$. Anyway, when I got on the highway I noticed quite quickly that the overdrive isnt engaging (the torque converter isnt locking up). Anybody have any clues as to what might cause this. The only thing I can really say is that the engine does run alot cooler then the old one (the heat coming out of the vents is not much above 20C/70F). Could it be something to do with the thermostat, and the computer not thinking its warm enough?

Any help would be welcome
Cheers[/align]

 

If this problem just started right after you got the engine replaced by the garage I would take it back to them. They may have done something during the engine replacement to cause this.

 

We are going to give you the same reply as you got on H-T

if your t-stat is stuck open, your car will not engage the TQ converter. You need to make sure that your car is reaching proper operating temp. It is common for t-stats to be stuck in an engine that has sat around unused for a while........

and note to self.........next time my water pump fails, replace engine [:P]