Mustang engine misfire !

UPDATE 4:

The car is fixed now, the faults in this video were caused by a Vac.leak, and crappy aftermarket ignition coil/Wires and plugs, and the 02 sensors had short circut and messed up the ECU.

Word of advise:

Buy only Fords own parts for your mustang, buy motorcraft or autolite for your ignition wires and 02 sensors. Do not buy any aftermarket brands, not even bosch, they will mess up your car.


UPDATE 3:

I found the cause for the code: P0300(Random Misfires) It was a vaccum hose in the intake manifold that wasn't attached correctly, but I still get the code: P0171, I have narrowed it down to (1) a clogged fuel filter or (2) need for a new fuelpump.

Eg. I did clean the MAF sensor too, but it didnt do anything.

UPDATE 2:

After driving it for a few days, it kind of spits once in a while, like its cuffing, But it can be because of mixed octan fuel in the fuel tank. Also when ever I start it, the Eheck engine light comes on; and says P0300, meaning "Random/multiple misfires" but its only when the car starts, if I erase the code after the start up, the "Check engine light stays off. It might be an ignition problem ?


UPDATE:

This problem was caused by a octan problem, it apperently has to run on 98 octan fuel.




Its a 1994 3.8L V6 Mustang conv.

The OBD codes reads: P0008 + P0300.

This problem started out in febuary 2009, then the mecanics couldnt find out whats as worng, now I have tried everything including; new engine, new wiring, new OBDII unit, and 2009 software. and still this keeps happening. I am sick and tired of this !

When I drive the car, it sounds like an old steam train and a diesel engine running together, the car runs slow and gas flows rigth through the engine, and in to the exhaust. And the mecanics just cant find whats causing this to happen.

If anybody can hepl me, or give me a clue to WTF this can be, please feel free to let me know! :-)

I want to sell this car, but I cant get anything for it when its like this. :'-( ...ever since the first day I got this car, there has been problems with it, and they just keep comming, it doesnt matter what I do for/to this car, it just seem to keep casuing more problems and costing $$$$$$$$$$$$$$$$ !

Please help!

Category:

Autos & Vehicles

Tags:

• 1994
• 3.8L
• V6
• Mustang
• Misfire