Skip the auto shop - Our mechanics make house calls

Q: strange problem

asked by on

i have nissan largo 2wd 2.0 diesel auto. Car speedo stops working when it comes 65-70mph and dropped stright 0mph. Loosing power around 1 min and after than power back but speedo stop working until i reduce my speed under 30mph. I put diagnostic machine nothing came out. I done gearbox ecu check with power light 1 long 10 short flashes i got it until getting bored(didnt know how long it takes) I put another speedo instrument even swapped the clock still same problem. I disconnected to speed limiter even when it was plugged car was loosing lots of power like dragging to car 70 to 50mph Feels like gear chaning time is wrong time or not seeing top gear until speedo stop to working. P.s. speedometer reads -5 to -10less than satnav and phone app Any idea??

My car has 90000 miles.
My car has an automatic transmission.

Hello. The symptoms you are experiencing can be caused by a wide variety of issues. If the symptoms appear to come and go then it may be possible that the symptoms are electrical in nature. A few things I would look at re the vehicle’s speed sensors, and the speedometer sensor, if there is one. These sensors read the vehicle’s speed, which has a direct effect on the vehicle’s performance, shifting characteristics and the speedometer readout. If there is an issue with any of these components the vehicle may experience hesitation, power loss, irregular idle, issues shifting, and a loss in overall performance.

I would also carefully check the wiring and connectors associated with those sensors, as intermittent issues can commonly be caused by faulty wiring, or connection issues. I would also check the vehicle’s transmission fluid, to make sure that it is not low, as this can sometimes also cause issues shifting. As these sorts of issues can sometimes be difficult to diagnose, I would recommend having a professional technician, such as one from YourMechanic, come to your location to diagnose and repair your hesitation and shifting issues.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. strange problem

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Car shut off at the traffic light - 1994 Jaguar XJS

This is most likely a fuel pump fuse or fuel pump relay acting up. Given the age of your Jaguar, electrical power to the pump is quite likely. Have a professional mechanic, like YourMechanic, inspect the stalling issue and proceed...

Q: Car will not move. When I try to drive, it starts up and wants to try to go forward, but it just won't. What might the problem be?

Hi there. The clunk that you heard and the grinding sound came from the transmission. The noise was a gear breaking a tooth off and causing the transmission to no longer engage the teeth from the main shaft to the...

Q: My car wont start it says something about the shifter and just clicks

There is a technical bulletin out for your 2015 Dodge Charger to reprogram the transmission control module to address this problem specifically. If you can't get it to crank, you will need to have the vehicle towed to the dealer....

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.