You have to pull the dashboard out to get to it. If you are mechanically inclined, then I suggest you obtain a factory service manual for your specific car(they can be found on eBay pretty cheap sometimes) and also go to TCCoA.com -that's Thunderbird & Cougar Club of America and do some research in the forums & tech articles. Also whether you or someone else does the job, do yourself a favor and put a ground wire/strap on the new one to make it last longer. This helps null the electrolytic reaction between the anti-freeze and the heater core which eats at the metal and causes premature failure. It's a all day job & you will need help to lift the dash and move it into the front seats, also do a thorough cleaning job on the blower box it's mounted in to remove all the anti-freeze or you will have a smell for quite a while after replacement.
If the lightbulb itself is burnt out on a 1991 Mercury Cougar then just replace the light. If it is the wiring that is the problem then find the burnt wires and cut them. Replace them with new wiring.
1991 mercury cougar i need to know the egnition timing engine is a 3.8 v6.
The 3.8 liter V6 engine in a 1991 Mercury Cougar has a timing CHAIN
On a 1991 Mercury Cougar : The oil pump is INSIDE the oil pan ( the oil pan is bolted to the bottom of the engine )
According to my Chilton's Auto Repair Manual : ( A 1991 Mercury Cougar has a 19.0 U.S. gallon gas tank )
I can't say for sure , but the ( 1996 ) Mercury Cougar is ( 18.0 US. gallons ) * also the 1991 Mercury Cougar is 19.0 US. gallons
My 1991 Mercury Cougar LS 3.8 4 Speed Automatic weighs in around 3800lbs.
According to my Chilton"s Auto Repair Manual : For a 1991 Mercury Cougar ( 19.0 US. gallons )
According to my Chilton's Auto Repair Manual : For a 1991 Mercury Cougar : ( 19.0 U.S. gallons )
According to my Chilton's Auto Repair Manual : A ( 1991 ) Mercury Cougar has a ( 19.0 US. gallon gas tank )
Plug in your seatbelt.
Under the dash on the drivers side of the car.
with a socket & wrench
According to my Chilton's Auto Repair Manual : For the 3.8 liter V6 engine in a 1991 Mercury Cougar : With engine oil filter change : ( 5.0 US. quarts )
They are 5"x7" front ant rear, http://www.modifiedlife.com/1991-mercury-cougar-car-audio-wiring-schematic/
It will take a skilled mechanic approximately 5 hours to change the fuel pump in your 1991 Mercury Cougar. It can take a novice mechanic much longer.
replace heater core in a 1991 Chevy work truck 1500
1991 mercury cougars use shocks and struts
did you try your fuse panel
check crank sensor and air mass meter.
Your 1991 Mercury fuel pump relay switch is located on the firewall of the engine compartment. The relay switch will be near the center of the firewall.
The dash has to be removed to gain access to the heater box. The heater box then comes out and is split open to replace the core.
www.techcapri.com has instructions on this.