Top 20 1991 Ford Mustang Questions & Answers

First when was the engine tuned up last ? is it using oil ? How many miles are on the engine. The knock you are hearing is it up top or louder under the car. Need more information. you could spin the oil filter off and cut it apart and see whats on the paper part of the filter. if there are metal flakes then you have something failing inside the engine. Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/darryl_24e8d8d43e609e3c

Reset the inertia sensor. This part is a safety switch to prevent fires in collisions. The downfall is that shutting a door or trunk-lid can sometimes activate this feature. It is a simple device using a magnetic ball to connect the power to the fuel pump. Most are mounted in the trunk and have a reset button to press.

Did you connect the wires in the proper sequence ? Might want to double check firing order and compare the wires.

Check all the fuse links under the hood. Get a manual for your car at an auto parts store for the locations of them.

I'd start with the mass air flow sensor as your friends have pointed out. This is the first link in what could be the cause of lack of air flow, or a lean/rich fuel mix sensing issue. Your catalytic converter would be the next check I'd make. If your running rich, the converter will plug up or the O2 sensor may be affected and then the car will be shaking and loss of acceleration is often a result.

Sounds like the actual pressure plate but you won't be able to confirm without dismantling it.

there is a solenoid that locks out gear shifter. it is controlled by the brakelight switch. there is an override . see your owners manual

The starter solenoid is most likely shorted. Located close to battery and positive cable goes to it.

If you are going to work on this car Purchase the Clymer manual.. or borrow one from the library.. Wiring diagram? there are 8 plug wires (firing order) and a plug for the IGN module. you did not say why you needed a diagram.. What is the car doing ? WRITE A COMMENT AND LET US KNOW WHAT YOU NEED.

The side that is not blinking has a burned bulb, or ground short in the bulb socket. Set the side that will not blink. Look at the bulbs to see which is not lighting. Change the bulb.

Assuming there are not any codes. I would lean toward issue with the distributor.

1991-1993 Mustangs are bad for this problem. It is usually a flasher unit problem. There are 2 flasher units. One is under the dash on the driver's side and the other is behind the dash between the glovebox and the radio (you can get to this one if you push the sides of the glovebox in and open it all the way out). Usually it is this flasher unit that causes this problem but you might have to change them both. Also, try this first before changing the flasher(s) - Try pushing the emergency flasher button on and off several times because it might not be making good contact. Good luck !!

could be the control module . many of the fords have them that bolt on the outside of the tranny .......check local parts house for replacement part, and they should be able to tell you how it goes on...... otherwise , aamco , can test the tranny to see if it's more serious issue.....

Firing Order is 1-3-7-2-6-5-4-8 cylinder number 1 is on the passenger side of engine at the front - 1234 (front to back) on the passenger side 5678 (front to back) on the drivers side here is a picture to help: Orange County Mobile Mechanics 714 709 4594 I hope this helps you, if so please post your comments by clicking "submit a review" Thanks! Robert Grove Wego2u Mobile Mechanic

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

I would check the timing could have jumped a tooth on the timing belt/chain. Also check the rotor in the distributer make sure that it is not worn out. I have also seen a plugged catletic converter cause big time power loss and really strange problems

did you replace the distributer lately? if so it could be in the wrong position. check the firing order for the plugs first. the hard way is to take the number one plug out. hold your finger over the hole and have someone "bump" until you feel air push on your finger. then check timing mark on the pulley in front of the engine. should be a marker there and a line on where it should be. Make sure distributer is out when doing this. when the timing mark is before the maker. insert distributer with the rotor facing to the number one plug position. attach plug wires. replace number one plug. and then try to start. if it runs rough just twist the distributer until it runs at its best.

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.

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.

what is your model number is then we can get started then