Uplander 2005, while driving engine shut off, why?
Uplander 2005, while driving engine shut off for no reason, also other problem, at 120kmh when trying to pass someone rpm goes up to 5000 and no power on engine if on cruise it's ok, why?
Re: uplander 2005, while driving engine shut off, why?
Perhaps your key needs to be relearned. sounds funny, but check it out before you have a situation where you can not restart after a stall. If the computer senses the wrong key, it is supposed to immobilize the vehicle, but sometimes it just goes haywire and does really strange things.
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Question edited for clarity.
Question moved to sun-category.
You have modules issues. For that you need an auto-electrician with a pro grade scan tool computer. They collect data from each module and tell which are causing the issue. Likely to be ECM and BCM issues.
While there are a variety of reasons your Chevrolet Uplander is overheating, the most common 3 are a coolant leak (water pump, radiator, hose etc.), the radiator fan, or a failed thermostat. A more uncommon reason is your radiator is partially scaled up and under a heavier load, the cooling capacity is not sufficient.
Go online and search "Chevy Uplander 2005 drive belts" and on "images" there are all sorts of pictures. On the main web are several sites with "How to's"
This is a rare one and can be tricky. Since your rpm gauge rises back up when you increase your acceleration slightly but you feel no jerking of acceleration then this tells me that a speed/rpm senser either has a bad connecton or the sensor itself is going bad when the engine reaches an optimum heat while driveing on the highway. Since you feel no acceleration when you slightly press the accelerator down but yet the rpm gauge is increasing back to normal, the throttle body sensor may be compensating for the failed speed sensor/failed sensor connector. Please get your uplander diagnosed properly first to confim this.
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