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?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  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 goes forward when put in reverse backup lights do not come on

Hi there. The most common cause of this type of problem is a transmission sensor, or linkage malfunction or a pressure imbalance in the transmission. With these issues, the car is unsafe to drive until this is resolved. You should...

Q: Q: Power steering gear box leaking

Although I have seen the gearboxes leak in the field, the more common place they tend to leak is the power steering lines themselves, and occasionally from the pumps. I would start by cleaning off all the surfaced of the...

Q: Will my car having shifting problems if my purge valve solenoid is bad

A leaking purge valve can cause a hard start and rough running after getting fuel due to vapors flooding the engine out. The shifting problem is most likely not related to the purge valve. This sounds like a shift solenoid...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...