Nissan Repair Questions? Ask a Mechanic for Answers ASAP
Is the check engine light coming on when it loses power?
The car will reset if this is in fact the issue. Since it happened again today I would say it is not the TPS unless there is a poor connection at the throttle body.
That being said, the throttle has 2 sensors it uses and the other is the pedal position sensor. If this is losing power or not sending signal to the computer. This same type of episode will result. This is mounted under the dash on the gas pedal. I think you should check and make sure it's plugged in good and tight, and maybe even unplug it and plug it back in. It's location can sometimes cause corrosion to build or contact issues.
If this doesn't solve the issue I think you will be ahead of the game to spend the money to have it properly diagnosed, then perform the repair yourself if you can.
Sometimes saving is not spending as much as you would have if someone else had to do the repair.
Please let me know if there is any more I can do to help you from here.
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