Question about 1999 Ford Mustang Cobra

1 Answer

1999 mustang 4.6 not firing on front two cylinders. have spark and fuel. when Running (rough) can pull injecter wire and makes no difference on engine.

Posted by on

  • anselmimp Jul 14, 2009

    I checked injectors with noid light and the were working

×

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 36 Answers

I would check compression first. you can jump injector wires from a injector that works to one that does not and see if that makes a difference. i had worked on a car that the injectors were not working on a few cylinders so i jumped the injectors well it turned out to be the ecu was bad.

Posted on Jul 12, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
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.
goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Both coils do not fire on 1 and 4. Will start but only running on 2 cylinders. Could both coils be bad or should I look elsewhere?


Part 3 -How to Test the Ignition Module and Crank Sensor ...

easyautodiagnostics.com > Ford > 2.3L
Mar 1, 2012 - Spark plugs for cylinders #2 and #3 get spark at the exact same time. ...voltage -12 Volts) to both individual ignition coils within the coil pack. ... Ford Mustang or Ranger (or 2.3L Mazda B2300), this is what you'll need ... for this 'Switching Signal' at the coil pack... but you can also test this ... 1991, 1992, 1993.

How to Diagnose a Misfiring Cylinder (2.3L Ford Ranger ...

troubleshootmyvehicle.com > Ford > 2.3L
Apr 3, 2012 - Bad Fuel Injectors can cause a Misfire Condition. ... the ignition system on the 2.3L Ford Mustang or Ranger consists of 2 ignition coil packs, ...

2002 ranger misfire rough idle - Discussion on Topix

www.topix.com > Ford Ranger
Jul 27, 2007 - My truck is giving the code misfire in number 4 cyl. I replaced my spark plugs, Wires, Coil packs (both of them) and all my fuil ... three (3.0L v6) go bad, the fuel/air mixture gets messed up. Judged: 2. 2 ... My truck runs rough only at idle. ...code for ford ranger 2002, 2.3 5speed. truck runs like a champ but that ...

Extremely stumped! I need the best and brightest 1994 Ford ...

answers.edmunds.com > Edmunds Answers

Jan 31, 2016 | Cars & Trucks

2 Answers

I need help with my 1999 chevy silverado 1500 5.3 4x4 I have a rough idle like its only running on 7 cylinders here are some of the things I've done to try and resolve this issue, changed fuel filter


you need to isolate which cylinder it is first may help.
while running use insulated pliers to pull each plug wire off plug or cap separately, you will hear idle change/drop when a good cylinder is pulled. it will not change when not firing cylinder is pulled. now u got the cylinder and can double check plug, wire connections there. see if that wire sparks on a ground or plug to check spark and eliminate that issue. if you get a zap you need a better insulated pliers, but you know that wire is good. Remember the 3 things needed on all engines- Spark, Fuel, Air. oh yes and Compression. if you have spark, then have cylinder compression tested 120-150psi is still good. 80psi sucks and you have bad rings or valves., fuel cleaner may help in that situation, rare fix, but cheaper than a new engine.

Aug 28, 2014 | 1999 Chevrolet Silverado 1500

2 Answers

Cylinder not firing


make model and all the info might help please

Oct 11, 2013 | Ford Cars & Trucks

1 Answer

Changed plugs and wires and put on a new igntition coil and it is stillmissing on 2 cylinders


I believe the Mustang has 3 coils for a V6, and 4 for a V8, each coil controlling two cylinders. First you need to check and find which two plugs are misfiring, and if they go to the same plugs. It may be that more than one coil is defective and the coil pack needs replacing. With the vehicle running pull one spark plug wire at a time to find the missing cylinders. If the engine slows or starts running rough, that cylinder is firing, if you pull the wire and there is no change you have found your missing cylinder, from there trace the wire back to see which coil it plugs into. Also, make sure your plug wires are not touching each other and are in the spacers the factory installed. If you still can not find the problem it may be in the main computer. Most autoparts will run a diagnostic check for free.

Dec 30, 2011 | 2002 Ford Mustang

2 Answers

Car is running rough, cylinder 4 is miss firing


at least try changing number 4 cylinder spark plug and wire, see if it makes a difference.
good luck !

Sep 11, 2011 | 2000 Mercury Grand Marquis

1 Answer

It runs. but when I try to accelerate it fire thru the tbi


sounds like a firing order problem to me make sure all your spark plug wires. are going to the correct cylinder. If the coil hasnt been replaced it is numbered on the top telling you what cylinder that wire goes to. If I remember correctly cylinders 1-2-3 are in back and 4-5-6 are in front

Oct 17, 2009 | 1999 Ford Taurus

1 Answer

99 Chevy 4.3 2 cylinders don't fire (all cylinders have spark)


Sounds like your computer is fried. Check prices at your local recycling yard or EBAY. Ive seen this happen on other makes and models as well, and its always been the computer...

hope this helps!

Feb 26, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

It seems like the injector is having problems one of the cylenders is not firing and is has a los of power and seems to run rough what could be wrong


Look you are looking at a number of things when a Cylinder, it can be electrical,1 like the spark plug can be not working, 2 the distributor cap if the car has one, 3 The spark plug wire that runs from the distributor to the spark plug that spouse not to work, 4 The fuel distributor if the car has mechanical fuel injection,5 The injector it self, is a way to diagnose it by first identify which Cylinder is not firing, also can be a burn intake or exhaust valve, to find out that you need a compression test at that not working cylinder. 2A
NOW if Your car is electronic fuel injection it can be a defective injector or the computer, You can try by taping on that injector wile motor idles, good luck

Jan 21, 2009 | 1992 BMW 5 Series

1 Answer

Runs rough


How long have you had this problem? It could just be a bad tank of gas. Other things to check:
1. fuel pump and filter
Could be running on only 5 cylinders due to
2. spark plugs/wires
3. plugged fuel injector
Any problems with electrical? Like lights dimming at same time as running rough?
4. could be bad alternator putting excessive load on engine.

Nov 08, 2008 | 2000 Ford Mustang

Not finding what you are looking for?
1999 Ford Mustang Cobra Logo

Related Topics:

129 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts

yadayada
yadayada

Level 3 Expert

76070 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

fordexpert

Level 3 Expert

5520 Answers

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

Answer questions

Manuals & User Guides

Loading...