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misfiring

  1. 4.6L Tech
    I have a 2002 Mustang GT and it is making an extremely loud high pitched noise noise near the intake manifold. I am throwing the following codes P1506, P0171, P0174, P0316, P0307, and sometimes P0303 and P0300 comes and goes. I thought it was the IAC valve so I replaced it but nothing. Then I...
  2. 4.6L Tech
    The title indicates that I have the engine code p0357. So I'm misfiring, the coil is good, and I don't know how to fix it. Or at least how to go about fixing it. I know the connector does not LOCK onto the coil, so could that cause it? But if I push the harness on the coil all the way down (it...
  3. 5.0L Tech
    I have a 1989 gt. I was out of town for a while so when I came back I did a tune up on the car. Chnaged wires spark plugs. Fuel filter . U know the usual. And when I started it it didnt sound good. It started up fine but its making a hissing sound like air leaking and also sounds like a metal...
  4. 5.0L Tech
    Hey guys heres another fun thread. So as you all already know I currently own a 1988 mustang 5.0 lx. I bought the car back in november and I've had multiple issues. I currently have a misfiring issue so I was told to replace multiple things. I would get a misfiring/popping sound from my vehicle...
  5. 5.0L Tech
    Hey Everyone, I originally had an issue with my engine on my 1988 mustang lx 5.0 because it was randomly misfiring yesterday randomly even though while i was driving it all day yesterday it was fine until later on last night(heres my original thread...
  6. 5.0L Tech
    Hey everyone, I just bought my first mustang 5.0. Its a 1988 mustang 5.0 lx and when i bought it, it had about 5 gallons of fuel which was regular gasoline (87 octane). I was reading on other forums to not use regular and to use 92,93 octane. I used 93 octane(premium) even though the previous...
  7. AllFordMustangs.com Site Problem and Bug Reports
    I hope im posting this in the right place, im new and dont really know what im doing. Ok well, my mustang has been running very rough for a while now. It almost sounds like it has a cam in it at the idle. It sounds like its misfiring, but no code is being thrown, i do have a P0161 being thrown...
  8. 5.0L Tech
    So my car has been running like carp lately and I think it's because my computer is fried. I started by doing some diagnostics trying to get the o2 sensor readings, the passenger o2 sensor read .3 volts when I probed it and I went to the other o2 sensor and it read around 6 volts with the key on...
  9. 2005-2010 Mustang GT Tech
    OK guys, I just purchased the car about 3 weeks ago now. On Friday the check engine light came on, I stopped by AutoZone and there was an error P0340 which I found to be Cam Position Sensor malfunction. I replaced the passenger side CPS, immediately after replacing it I began having problems...
  10. V6 Tech
    :wavey:smoke:I have a 2000 mustang v6 auto 135k miles that i bought almost a year ago. I drive it frequently and have had the CEL come on and randomnly go off very frequently over the year except for more recent months. About 4-6 months ago, my car started having trouble starting, it would...
  11. V6 Tech
    Hey guyz, Just thought of putting a list of problems in my car and I am not a car expert so will take it to the mechanic I trust the most and will update it as I progress with the fixes. Your suggestions are most welcome and infact I am looking for them so that I can feed them to the mechanic...
  12. 4.6L Tech
    Hey Guys... I am having some misfire issues with my 04 mustang GT... when my engine is at about 2000RPM my check engine light starts flashing and i can feel it drop a cylinder or sometimes 2. I first thought it was the coilovers since I have an ignition booster and that just killed them... but...
  13. V6 Tech
    k...so, here's the deal: My 97 3.8L stang started misfiring a few days ago after my ac compressor freaked out and sprayed r134a all over the place. I took it in to the local autozone to have them check out my codes and it turns out that my CPS is T/U. So, I called my local mechanic to find out...
  14. V6 Tech
    I am new to this site, so I hope I am doing this right. :newhere: Anyways, I own a 1997 Mustang V6, 3.8L with a manual transmission. The day before yesterday, after having my AC system recharged, it started spewing white crap from the AC compressor and my AC stopped blowing cold air. OK, I can...
  15. 4.6L Tech
    I recently replaced the spark plugs, and spark plug wires on my 98 GT due to the engine misfiring. I wasn't too worried as my Mustang has 138,000 miles on it and I figured the original spark plugs or spark plug wires had finally failed. However, after using my timing light its clear that...
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