Question about 1991 Ford Mustang

1 Answer

Why dont my fuel injectors pulsate on my 1991 ford mustang lx 5.0

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.


    An expert that got 20 achievements.


    An expert that got 10 achievements.

  • Ford Master
  • 21,873 Answers

The firing order is shown below from Jeff back in April 2011.
The order is 1-3-7-2-6-5-4-8 and cylinder one is front passenger side of engine.
I would agree with the person who answered your question earlier, all of the injectors are powered by the same red wire, half of them are grounded on one circuit and the other half on a second circuit. Both circuits come from the computer.
So if you have spark the ignition module is working, which would point to the computer being the problem.

Posted on Jan 16, 2013


6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

  • 1 Answer

SOURCE: 1992 ford mustang lx 2.3L will not start

The crankshaft sensor went bad. I Was'nt getting any fire from the coil pack. Tried switching coils and still nothing, tried switching ignition modual, nothing. I checked to make sure it was in time and it was. Nothing left to check so I changed the crank sensor and it firerd right up! Thanks.

Posted on Jun 23, 2009

  • 87 Answers

SOURCE: How do you adjust the timing on a 1991 Ford

the timing is not adjustable.the engine computer controls the timing. there is no distributor to adjust.

Posted on Jul 29, 2009

  • 15 Answers

SOURCE: location of the daytime running light module

1991 Mustang not equipped with DRL.

Posted on Sep 29, 2009

  • 1102 Answers

SOURCE: I have a 1991 ford

Fuel pump relay is under the hood, passenger side, front side of strut tower, mounted on the fenderwell. You should have a safety fuel shut off and If I remember right Ford likes to put them under the dash on the passenger side on the kick panel

Posted on Dec 22, 2010

  • 4369 Answers

SOURCE: where is the fuel pump

I'm showing it on the passenger side of the radiator support, in the CCRM, Contstant Cntrol Relay Module. 4 realys in one module. For 1994 anyway. I don't have 91.

Posted on Apr 05, 2011

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

1991 ford mustang

Start by checking for vacuum leaks, compression then a scan for fault codes. One of those should turn up a problem

Dec 14, 2013 | 1991 Ford Mustang

1 Answer

Why dont my fuel injectors pulsate on my 1991 ford mustang lx 5.0

Get a cheap set of noid lights and check for electrical pulse. If there is none, test your crank positioning sensor and the wires to it. If that don't work, try testing the distributor's electronic module.

Jan 15, 2013 | 1991 Ford Mustang

1 Answer

Where is fuel filter located on 1991 Mustang LX convertible??caanrban

Probably on the frame rail 3/4 of the way back,jack up car & follow fuel lines till you find it .

May 29, 2011 | 1991 Ford Mustang

1 Answer


the pcm monitors fuel requirements through sensors so it knows how much fuel is needed to keep the motor running under different demands depending on what or how the driver is driving the car.the pcm grounds the injector circuit while supplying power to the injector all the time the key is on.when the pcm grounds the injector,it opens it allowing fuel to enter cylinder to be burnt for the on time(open injector) that is required for the demand on the motor.

May 05, 2011 | 1998 Ford Mustang

1 Answer

Does a 1991 2.3 ford mustang have some kind of fuel pump relay?? the new fuel pump doesnt get any power...wut could be the problem??

i have a 91 lx with the 2.3 an its got a reset switch in the trunk by the tail lights got to remove interior pannel.

Oct 26, 2010 | 1991 Ford Mustang

1 Answer



First thing.. take the fuel lines loose and turn the key to the on posistion and see if the fuel comes out of the line. It sounds to me like you may have fuel pump issues...

Dec 17, 2009 | 1991 Ford Mustang

1 Answer

Location of the daytime running light module

1991 Mustang not equipped with DRL.

Sep 26, 2009 | 1991 Ford Mustang

1 Answer

89 ford mustang lx 2.3 starts but will cutt off after 20 second

Have the charging system check or take alternator off and have it check the *** might be bad. Listen for the full pump to pressureize the injectors. One big thing check the timing belt to make sure it has not jump time.

Mar 04, 2009 | 1998 Ford Mustang

Not finding what you are looking for?
1991 Ford Mustang Logo

88 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts


Level 3 Expert

76691 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers


Level 3 Expert

5537 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides