The primary cause for jerking on a 99 Mercury Cougar is the engine not getting enough fuel. This can be a sign of a clogged fuel filter, bad fuel pump, or clogged fuel injectors.
There probably is only one cause for your interior lights to go on when you apply the brakes. There probably are brake light wires and interior wires that have warned together.
you dont need to cause it has a factory tachometer
probably the fuel pump?
I had the same problem in my 1999 Mercury Cougar, I replaced the flasher located in the blinker assembly. It was very simple to do. Flasher cost about $10
The most likely cause is a dirty fuel filter that starves the engine.
my son bought a 1996 cougar that felt like the transmition was slipping and we had the transmission flushed and it fixed it.
probably the fuse is blown.
Try your voltage regulator
the ignition timing set wronge. BAd accelerator pump in the carburetor
it is in the manual says when this happens it is 02 sensor and if it is flashing you have a miss in your engine which can cause damage.
ford van 2013 E250 inide lights wont work
On your light switch there is a dimmer for the dash lights . if you turn it all the way to the left your interior lights should come on , turn it to the left and see if that works otherwise it might be a door switch .
Press dome override button 3 or 4 times till you here a beep to put headlights and interior lights back on auto
The dimmer switch when turned just past high, turns on the interior lights. There are switches in the door opening that turns the lights off when the door is closed. Either one of these can cause the lights to stay on if they fail.
check the recalls for the 99 mercury cougar!! it includes a recall on the throttle cable...
The gears in the speedometer are stripped. If the odometer is working then you have input.
* No power steering fluid in reservoir * The power steering pump is not operating
Your intake manifold probably has a crack in the water jacket.
Reverse light switch bad or out of adjustment.
A blown fuse or a damaged computer would cause the turn signals, interior lights, and door locks not to work in the Mazda 3. The fuses are located under the dash on the driver's side of the car.
i have the same problem my dash light turns on when i turn on the interior lights but when i turn on only ........the dash light they wont turn on but they work when the interior lights are on ........so they do work .,...is there a separate fuse ?
the battery could have a dead cell, this could cause it to not charge. Have the battery tested to be sure.
aerodnamics are such that there isn't much airflow past the alternator and high loads cause them to overheat
Check the brake light switch first. It is usually near the brake pedal under the dash. A bad turn signal switch can also cause this if the brake lights are also turn signal lights. If the brake lights are independent of the turn signals then disregard the switch problem. A good wiring diagram will help to diagnose the problem also. Check with dealership mechanics as they have access to diagrams.