Q: Neutral safety switch keeps going out

asked by on January 01, 2018

I have a 2003 ford ranger 4.0 automatic transmission and it's been having issues such as going into fail safe mode and the overdrive light flashing and I've replaced it 2 times this year once for starting issues second time 2 weeks ago for fail safe mode issues and it seems to happen under freeway speed or when accelarating quickly I can have the part replace because it is a warrantied part through or ewillys but I would like to figure out what is making it go bad b4 I replace it a 3rd time. Do you have any advice on what may be happening or what to replace before the neutral safety (TRS) switch?

My car has 158000 miles.
My car has an automatic transmission.

You need to make sure there is no fluid leak at the transmission side shaft seal getting fluid into switch. If it is then the seal will need to be replaced. Use some dielectric on the connector before reconnecting it to keep out moisture from getting in switch.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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

What others are asking

Fuel pump does not turn off after 1-2 seconds

The fuel pump is commanded on by the ECM. If it runs all the time, then this is a fault with the computer rather than the fuel pump. Good power and ground connections should be verified at the ECM, but...

Hi.I have a 2006 Dodge Magnum. My ESP light came on and my car won't go over 35 mph.

Hi there. The Electronic Stability Program light is on for the one or more of the wheel speed sensors are picking up a wheel that is spinning too fast. If the rear wheels spun out, then the system will become...

Too lean in bank 1 and bank 2

Hi and thanks for contacting YourMechanic. When the engine becomes too lean, then combustion chamber becomes very hot causing the head gasket to burn, valves begin to burn, and the rings being to seize up. Check the camshaft sensor and...

I have a parasitic drain of 150 milliamps from my alternator, is that normal?

The battery going dead in a couple of days is not normal and if you did the parasitic drain test correctly, then you are correct to condemn the alternator for the excessive draw. The alternator is most likely shorting internally...

F150 running rich

The most common causes of too much fuel being delivered are: a dirty mass air flow sensor that overstates the amount of air entering the engine; a faulty oxygen sensor; a faulty coolant temperature sensor (the temperature signal is a...

What does the Check Fuel Cap Fill Inlet Light mean on the dash?

There are several important warning lights on the dash of your Escape. The Check Fuel Cap Inlet Light is designed to come on briefly when you crank the car. It should go out shortly afterward. If it stays on, or...

Car Vibrating and bottoming out

The basic condition of the engine can be verified through a cylinder compression test. If the compression in each cylinder is within factory spec., there is not too much variance across cylinders, and you are not using more than a...

My engine has a ticking knocking type of sound. It runs fine not buring oil or losing coolent. Sounds like the valves taping

On a 1998 engine with 147,000 miles, the noise could come from anywhere. I typically check the engine oil level when cool to verify it is correct. Then, I run the engine for 5 minutes, shut it off, and check...

New alternator is loose

The alternator locking sleeves should be moved all the way away from pulley side before installation. Also, check the mounting bosses and make sure they are the same thickness. If you'd like some assistance with this, consider YourMechanic, as a...

Related articles

How to Get Ford Dealership Certified
Ford car dealerships offer automotive technician jobs to mechanics who are certified through either the ASSET or the FACT program.
The Best Used Cars to Buy If You're a Personal Trainer
As As a personal trainer, you either operate out of a gym, or you go to your clients. Either way, you probably don’t have to haul any more gear than what fits into your gym bag, so your main focus...
The Best Used Cars to Buy If You're a Carpenter
If If you're a carpenter, and working for someone else, the best used car is whatever you like that gets you to work on time and holds your tools – in short, practically any used car will do. If you...