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www.teslamotors.com/.../sudden-loss-power-while-driving-... Tesla Motors
Dec 16, 2014 - 31 posts - 21 authors
My car is back at the factory getting "worked on"...sudden loss of Power and control while driving on the freeway...has anyone else experienced this? ... My son was driving his '04 Volvo on the highway, when all of the sudden the car started slowing down, despite how much he ... Last I heard they were 60.
It does look like you have a 3 speed C6, if the PRND21 description is correct. If you do have overdrive, the "D" will be printed in a white oval.
Sounds like it is OK. My Mustang has a 351C with a C6 trans, and 3000 rpm is about right at 70mph.
The defining factor on the rpm will be the Differential gears, which in a truck, might very well be taller gears instead of highway gears, as the taller gears provide more power output at the axles than the highway gears do.
Example: if you had 3.0 to 1 gears (Highway), that means that the driveshaft will turn 3 times for every complete revolution of the rear wheels(Axle)
If you had 4.0 to 1 gears, then the driveshaft would turn 4 times for every revolution if the axle. Lots of torque for pulling stumps, but on the highway. the engine will have to turn more rpm's to maintain 70 mph vs a 3 to 1.
with the 3 to 1, you will turn less rpm's on the highway, but will have less available low speed power (Torque) at the wheels.
Check the least expensive first. Check the fuel filters first and replace them if they are plugged. Most likely it is the fuel pump. A shop can check the fuel pump pressure at the fuel rail on the engine under the hood. If the filter or filters were checked first then a low pressure would indicate that the pump is weak and needs replaced.
I'm getting the same message, when I'm driving at about 65 mph van starts losing power, kind of "coughing". I've been told that could be either fuel inyector or the need of a good tune-up. I'm taking my van (2002 E250 V8) to the dealership, they have the special equipment to zero into the problem and fix it,
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