Hi!
I'm new on this forum and I'm from Sweden so please excuse my english.
I have just bought a 4.0l V6 Ranger from 2001. My turnsignals and Hazard lights works sporadically. It can Flash slow, then not at all and den fast. So if i turn on the signal it does like this during the same "session". It"s the same behavior on both sides and Hazard light.

I gope you guys can help me :-)

 

Welcome to the forum

Välkommen hem till oss
(welcome to our house/home)
Thats was as close as I could find

2001 Ranger will have one Flasher unit that does BOTH turn and 4-way(hazard)

It has two fuses
Fuse 10, key on power only, just for turn signals
Fuse 21, power all the time, just for 4-way(hazard) signals

It is located under the dash on its own, between steering column and drivers(left) door
If you turn on the 4-way flashers and reach under the dash you should be able to find it, feel it, its just clipped on, slide it and it will come out and drop down enough to see it
Looks like this inside the dash: https://static.cargurus.com/images/s...1600x1200.jpeg
The BLUE one NOT the yellow


The turn and 4-way BOTH need the multi-function switch to work, looks like this: https://m.media-amazon.com/images/I/..._AC_SY355_.jpg

Flasher unit is less expensive to replace so I would try that first

 

Thx! I will check out the relay first and I hope that will solve my problem!

 

Another thing that can cause issues, is Trailer light wiring by previous owners, under rear drivers side of bed, shorts and bad splices can cause issues with turn and 4-way

 

This lamp i broken, could it cause the problem? I dosent blink and there is power to the lamp.

 

This is how it acts up. https://youtu.be/z2vJiX0sgdg

 

If its a turn bulb then yes, it will effect flasher timing

Rangers(like most vehicles) use thermal flashers, this means that HEAT causes the flasher to make and break its connection to the lights
When signals are off the flasher is cold, when you connect the flasher to the light bulbs, by turn signal or 4-way switch, the bulbs turn on, the flasher heats up, and a bi-metal arm bends and opens the connection to 12volts, so bulbs go out, heater cools off, bi-metal arm reconnects, bulbs on, heater on, repeat, and repeat
Sound complicated but its been done this way since the first flasher unit, very reliable method

Image of bi-metal arm reacting to heat, making and breaking electrical connection: https://www.arc-components.com/user/...-strip-001.png


The number and type of bulbs used dictates the speed of the flashing, because the more bulbs there are the more amps are drawn and the faster the heater heats up
This is why when a trailer is hooked up the turn signals will flash a little faster, 1 extra bulb on each side so more amps are needed
And if a turn bulb burns out, flasher heater may not get hot enough so no flashing at all

Turn and 4-way each have there own heaters inside these combo flashers, so turn can flash just 3 bulbs, and 4-way flashes 6 bulbs at similar speeds, when amp loads are different

LED bulbs cause issues with turn and 4-way because, as is, they draw way less amps so heaters never get hot enough
Some LEDs for vehicles turn signals now come with internal resistors to draw more amps
Or you can now get electronic flashers, they use a timer circuit, no heater, so amp draw from the bulbs doesn't matter

 

It is a turn bulb, then I will change it tomorrow and hope It helps.
Thank you RonD for takeing the time to help me!

 

Hi
FYI! I changed the bulb 12v 4w and the turnsignal is now back to normal. Thx for all the help! / Swede