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Topic: Fuel Pump (Read 7557 times) previous topic - next topic

Fuel Pump

good morning.

My name is Pablo and I own a 1987 mercury cougar ls 3.8cc.

The problem I have is that the fuel pump will not start and I hope you have the answers I need.

The problem is common in the mercury cougar?
Where is the fuse for the fuel pump?

Many thanks

Fuel Pump

Reply #1 –
The relay for the fuel pump is in the trunk, up in the passenger side hanging all by itself. The pump is in the trunk. Not really hard to swap, but time consuming and awkward, especially if you have a full tank of gas.....could be the relay, the pump, ignition switch (not the tumbler that the key goes in, but the switch itself).
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

Fuel Pump

Reply #2 –
By the way, welcome to the forum.
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

Fuel Pump

Reply #3 –
There's also a reset switch in the trunk, sometimes if you jar the car hard enough, it will trip it. It's behind the covering on the rear bulkhead, directly opposite of the tail lights. Open the trunk, reach straight down, gently pull the carpeting/covering back a few inches, and push it down. It's easy to tell if it's been tripped.

If it's not that, then it's a bit more involved.

Do you hear any clicking, humming, or buzzing sounds from the fuel tank area?
'98 Explorer 5.0
'20 Malibu (I know, Chevy, but, 35MPG. Let's go brandon, eh)

Fuel Pump

Reply #4 –
The problem is that the fuel pump no soundz

Fuel Pump

Reply #5 –
also has a t-bird 1984 and merkur xr4ti.

I checked the fuse relay for the fuel pump and not burnt, replace with one that is good and the pump does not work.

are you aware of fuel pump failures.

because I think that's the problem with my LS

From Arica - Chile

Ciao

Fuel Pump

Reply #6 –
There's a method to test for voltage at the fuel pump, but I'm not savvy on it.
I'm sure someone will chime in on what wire(s) to probe to test for voltage with key on...I'll look in my '88 Tbird EVTM and see if I can find a ball park wire color for you to check..
'98 Explorer 5.0
'20 Malibu (I know, Chevy, but, 35MPG. Let's go brandon, eh)

Fuel Pump

Reply #7 –
At the fuel pump relay:
The yellow wire should always have 12 volts.
The red wire should have 12 volts with the ignition switch on.
The pink/black wire should have 12 volts when the relay is picked.

The electronic control provides the ground to pick the relay, but it only picks it for 2 seconds when you turn the ignition switch to run.
To keep the relay picked continuously so you can trouble shoot, ground the fuel pump test pin at the self test connector.

Fuel Pump

Reply #8 –
where is the fuel pump in the cougar?
because the merkur and the t-bird was external pump and check if this had the 12v required to operate was relatively easy.

But the cougar and not able to find their physical location.

Fuel Pump

Reply #9 –
The pump is in the fuel tank, you must drop the tank to change the pump.
Mike

Fuel Pump

Reply #10 –
mcb82gt thanks

Fuel Pump

Reply #11 –
Quote from: ACCEPT;363192
where is the fuel pump in the cougar?
because the merkur and the t-bird was external pump and check if this had the 12v required to operate was relatively easy.

But the cougar and not able to find their physical location.

Your 84 T-Bird has two fuel pumps. One in the tank and one near the fuel filter in front of the right rear wheel.

Fuel Pump

Reply #12 –
T-bird I have it disassembled parts and so I just deal with an external pump. I did not find any bomb in the tank of gasoline.

it found 2 fuse fuel pump relay from the first near the ECU and the second in the rear of the car.

the model was a 2.3 turbo. which buy for parts for MERKUR XR4TI.

Fuel Pump

Reply #14 –
hello friends, this day I have news about my mercury cougar.

uninstall the fuel tank to check that the relay of the trunk was not defective.

measurements made ​​with a voltage tester marking this 6.68 volt voltage unsufficient to ignite the bomb.

I have understood that they are 2 fuel system relay on 87 or 88 cougar 20th anniversary.

one is in the trunk but the other failed to find.

if you have information on his whereabouts would really appreciate it.

Sincerely.

thank you very much