Why does my transmission lose pressure and slip out of high gears, when ambient temperature is low

Asked by Nov 14, 2014 at 07:44 PM about the 2000 Chevrolet S-10

Question type: Maintenance & Repair

I have flushed the coolant
system.. The heater core is
stopped up and therefore I have
bypassed the heater core.
My water pump quits for a short
time but then continues to work.
I discovered my catylic converter
is plugged and unplugged it.
I am losing water some times
and I overheat until the
transmission is cooperating

2 Answers


Time for a new vehicle. By the time you fix all that's wrong with your s-10 you could by a newer one.


Well first, have you changed the transmission fluid lately? You may have a clogged filter and low on fluid. Or bad bands and need a rebuild transmission. Plugged heater core? Replace it. Water pump doesn't pump all the time? You may have air in the system and a bubble gets into the system Make sure you have a full coolant system. I am not sure what the transmission has to do with the overheating of the coolant. You may have a transmission cooler for the fluid, butr the engine coolant system and the transmission system are not connected. If you bypassed the cat convertor, you are getting bad signals to the engine and the timing is way off, that is why you are getting overheating. A couple of hundred bucks will fix that. Like TransAm77 said, you may consider looking at car payments instead of fixing this truck. Check the coolant levels first, and getting rid of the air pocket may help the transmission cooperate better.

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