Question about 1986 Ford Mustang

1 Answer

Need a wiring diagram for 1986 ford mustang 4cyl engine. Helping a friend with his 4cylinder mustang and when i installed the negative terminal on the battery then as i place the positive terminal it sparks and the mustang start to crank or turn over with the key ignition on off??? I have never worked on his or other mustangs before... any sort of help or info would really help thanks

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert whose answer got voted for 500 times.

  • Master
  • 1,796 Answers


You may have the positive cable hooked in the wrong side of the starting selenoid or the starter selenoid is defective.

Follow the RED (+) cable from the battery, it goes to the starter selenoid wich has two terminals, change the cable to the other terminal, that should take care of the problem unless the selenoid is stuck on. Replacement runs about $15.

Don't forget to rate this post. Good Luck!!

Posted on Jul 06, 2010


1 Suggested Answer

  • 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


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

Where is the water pump on a 1993 mustang 4cylinder

On the engine bay you should find a decal labelled 'drive belt routing' or something similar, this will tell you the location of your water pump. Here it is for your motor:
1993 Ford 2.3L 4cyl. Engine

Apr 25, 2016 | Cars & Trucks

2 Answers

67 mustang wiring diagram 289 engine need one

James from Auto.Repairs
Please I ask if any of this has helped you in your repairs to please rate my answers accordingly thank you for helping me to help others.

I will take a guess at this means your not direct with which part of the diagram your asking for..... hope this helps you out bro... good luck.

Sep 08, 2014 | Ford Mustang Cars & Trucks

1 Answer

Drains battery while sitting

Here is how to detect a drain in system! Use a test light, Hook up test light to the negative terminal on battery. ( unhook terminal first.) connect opposite end of test light to negative on battery. If a drain, light will be on. Start pulling fuses from fuse box. when the test light goes out, that is the problem curcuit. let sit 3to5 minutes before pulling fuses. Good-Day!

Aug 07, 2014 | 1986 Ford Mustang

1 Answer

Need wiring diagram for mustang 2 4cyl allgauges

Hi sir you can check out this link you can find all the things for mustang specially different diagrams ,manuals,DIY, parts lists, electrical and vacuum troublseshooting.

Jan 26, 2011 | 1984 Ford Mustang

2 Answers

Manual for a 1993 ford mustang relay switch for cooling fan

I'm not sure but I think it is in the engine compartment. Follow the wires coming from the fan going to the relay switch. One wire is a ground and the other is power. If you have air conditioning there could be three wires for a two speed fan. Good luck.

Jun 27, 2010 | 1993 Ford Mustang

2 Answers

My stereo in my mustang was stolen and all the wires were cut i need to know what wires do what so i can install an aftermarket cd player

Okay it is very simple but if you don't know what your doing you should google this info "1999 ford mustang stereo wiring diagram" and something should pop up and you can usually print it out or download usually I print them out.

Good Luck!

Feb 07, 2010 | 1990 Ford Mustang

1 Answer

Temputure gage doesnt work

try replacing the coolant temp sender,here is a diagram for the 2.3 4cylinder engine its located at rear of engine, and if its a 5.0 engine it will be near oil filter.hope this helps.this diagram is for the 2.3 engine.there is also a diagram of the coolant temp sensor dont change this one, you want the sender,2a6394b.gif373f3c8.gif

Jan 26, 2010 | 1990 Ford Mustang

1 Answer

Something is running down my battery in my 1986 mustang

Disconnect the alternator harness. If the light goes out it's likely the alt has an internal short.

Apr 06, 2009 | 1986 Ford Mustang

1 Answer


Check the wiring diagram and ignition timing diagrams found in the 83-88 T-Bird/Cougar Haynes manual.

Jun 23, 2008 | 1986 Ford Thunderbird

Not finding what you are looking for?
Cars & Trucks Logo

414 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts


Level 3 Expert

76109 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers


Level 3 Expert

5520 Answers

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

Answer questions

Manuals & User Guides