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rough idle

  1. 5.0L Tech
    So I recently got this manual 1995 GT with only 44k original miles, the car is great overall. BUT, I couldn't help but notice it has a rough idle (the engine shakes considerably but nothing too crazy) and can't maintain stable RPM's at idle (altough you can barely notice the difference, the...
  2. 2005-2010 Mustang GT Tech
    This has been a week long process so bare with me... First contact: So I'm driving to work (Fort Bragg) and my commute is about 40 minutes. My CEL light is on, but that is normal because i need a tune to remove rear O2s. My car started up fine, was fine on the highway, got to a red light and...
  3. 4.6L Talk
    A little over a week ago bought a 2003 Automatic GT. A few days ago I started to notice some issues that might or might not be so common - I'm new to this, after all. I'm going to list them and would appreciate any advice on where to start... thank you to anyone in advance that provides help...
  4. 5.0L Tech
    I'm having an issue that started about 3 weeks ago. The car started to idle rough and occasionally surge at a stop, it would drop below 500 rpm then shoot up to around 1200-1400 rpm but if I gave it a little throttle it would clear up. Also occasionally from a stop it would have low power and...
  5. 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...
  6. Classic Tech
    Hey guys, I just recently resolved some carb issues thanks to your help. My new problem is that the car seems to idle high. Everywhere I read, they say the 1965 200ci mustang with auto tranny should idle at 500-550 rpm in gear once it's warm. As I adjusted the idle down, anything before 600...
  7. 4.6L Tech
    My 1999 Mustang GT had been idling rough, but when I turned the A/C on the idle would be smooth. So I figured I will clean the IAC and I might as well clean the throttle body at the same time. Went out, bought some throttle body cleaner and did the easy job after watching a couple of...
  8. 2.3L Tech
    So I have scoured the interwebs and I have changed a crap ton of parts (ICM,TPS,IAC,EGR valve,PCV,Fuel pump,thermostat,O2 sensor, coolant temp sensor) All of which has made the car run better, but, the original problem still exists. This is a '93 2.3L LX. The Problem: The Car always has a...
  9. 4.6L Tech
    Hey guys, I have an 01 gt. I changed the fuel filter for a standard motorcraft one(also used a fuel system cleaner) and suddenly my car has started to waste gas like crazy. I haven't tested the mpg yet but I don't think taking a 30 minute drive on a highway should waste almost a quarter tank...
  10. Classic Tech
    I have a 1973 mustang mach 1 with the 302 (originally a 2 barrel) now a edelbrock 4 Barrel. It ran perfectly when I bought it straight out of storage a couple months ago, recently it began to act up when I would drive it in the city, it would heat up to around 200 at stoplights and upon...
  11. 5.0L Tech
    I have an '87 5.0 with f-cam and gt40p heads, gt40 intake. Just finished it up last weekend. It runs like a champ while accelerating but at holding a steady speed or very light acceleration it jerks and misfires... I har replaced all vacuum lines and have no leaks, new plugs and wires, timing is...
  12. 2011 - 2014 V6 Mustang Tech
    UPDATE 6-25-2014: I was having no luck with BAMA. They tried 7 times and it seems now they won't reply to my emails with questions. Things don't seem right at BAMA anymore, their customer service has been terrible and the tunes have been worse. I fixed this issue with my idle by switching to...
  13. V6 Tech
    Hello, I am new to the forums. I have a 1997 Mustang 3.8l v6 automatic. I have owned the car since last October. A few months ago the car began to hesitate upon acceleration. The issue is intermittent, usually when colder outside, as the engine warms the problem gets better. However even with a...
  14. Mustang S197 Off Topic Lounge
    Hey all, The stang comes out to play Apr.1, but in the meantime I have some issues with my DD maybe you can help me address. The car has about 70k miles on it and has been well maintained as it is a daily driver. At idle, when the car is in park, everything seems to be fine. Once I put the...
  15. V6 Tech
    Hi everyone, im a newbie to the threads here. I have a 2001 mustang 3.8 auto. I recently pulled the motor and trans due to the fact my wife blew the motor and put the wrong atf into the transmission. The motor that was replace was internally balance and the replacement one was externally...
  16. V6 Tech
    I just recently got a 97 V6 3.8L Mustang with around 75k miles. It had been sitting with absolutely no use for the past 3 years. I had the fuel pump and spark plug wires replaced. The car does not overheat. It drives almost normal while the engine is still cold. The problem is once the...
  17. 4.6L Tech
    Hey guys, I think I'm getting close to solving my problem on my 04 GT. After doing as much as I could before taking it to the stealership I had to break. The first two days they had it they couldn't find anything, today the foreman tracked my problem down to a bad fuel pump. My problem is...
  18. V6 Tech
    Need help determining if I have a head gasket problem or not. 2001 V6 has 276 K Miles. Intermittently runs rough and when it does, it misses a lot, sputters and will not accelerate. New Coil pack, New Fuel filter. Fuel Pressure is about 60 PSI. No Water in oil. No Oil in Coolant. Good vacuum...
  19. Introductions
    I am new to this site, found it by searching a problem I'm having with my car. I am a mustang enthusiast through and through, they are my favorite car ever! However, I'm hating this car currently. I got this car about 6 months ago and have not had any mechanical problems until now. Since the...
  20. 4.6L Tech
    hi guys, im having some trouble with my 96 gt 5 speed. i just replaced my catted h-pipe with an o/r h-pipe because my car was studdering and losing power randomly. i had a check engine light saying insufficient flow or cat below threshold (i forgot), anyway i figured my cats were clogged. after...
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