Hello all,
I am new to the forums here but have an issue that I have not been able to find a solution to and have been looking far and wide on google and many forums so I decided to finally post. I bought a used 1995 mustang GT 2 weeks ago and had a 2006 GT before hand. I really love these cars however with this one I can not seem to get it to run properly. The guy I purchased it from said the car had been sitting for 6 months which isn't too long but also some things could happen in those months. Now to get down to the problem.
The problem was originally a rough idle where the car would feel as it was misfiring a lot and the whole car would shake. Also the idles would be sporadic ranging between 500-1200. I did some research and saw that the IAC, MAF or pretty much any other sensor leading to the throttle body would most likely be the culprit. That being said I cleaned the IAC (didn't fix it so later replaced the IAC), replaced the MAF, replaced the TPS, cleaned the heck out of the TB and upper intake manifold, replaced the upper intake manifold gasket, put new spark plugs and wires in and hoped the problem would be fixed. After all of that work I started her up and there was still a rough idle although she did sound much much better. I then read about possible vacuum leaks and although I could not hear any I replaced all the hoses going to the upper intake manifold. when I reset the ECU by disconnecting the battery the car idled very odd when starting up nearly stalling and then shooting up to 1500 RPMs and kept doing that until I drove down the street at which point it would only jump between 900-1100RPMs. I then replaced the distributor cap & rotor and the distributor coil pack since they all seemed slightly corroded. Now the car has problems starting cold where it will take 5-8 seconds of cranking for the car to turn on and after it turns on the car will idle between 600-1.2k RPMs until I drive down the road at which point it will idle at around 1k and will jump up or drop down very slightly almost to the point of not mentioning. Also the misfire feeling is nearly gone but I can still feel it slightly when I am at a stop light. Every once in a while when I cold start the car the volt gauge in the car will jump around some before evening out too. Another issue I have that is probably related to it all is that if I start at 0MPH and slowly let off the clutch without giving the car any gas it will go into gear and if I try to cruise at about 1k RPM down the road then the car will start to buck. The bucking will be every few seconds at first but if I do not give the car gas the time in-between each buck will decrease until it feels like you are trying to go off-roading(lol). Finally, I had the battery and alternator checked at the auto store the other day and the test said they were both fine however when we were testing the battery the guy asked me to turn my headlights on and the AC on max and when I did that the cars idle kept dropping to the point where it nearly stalled and then shot up to 1500-2k RPMs
Sorry for this super long post but I wanted to give as much info as I could. Any help would be greatly appreciated and I'm hoping the car isn't a lost cause.
I am new to the forums here but have an issue that I have not been able to find a solution to and have been looking far and wide on google and many forums so I decided to finally post. I bought a used 1995 mustang GT 2 weeks ago and had a 2006 GT before hand. I really love these cars however with this one I can not seem to get it to run properly. The guy I purchased it from said the car had been sitting for 6 months which isn't too long but also some things could happen in those months. Now to get down to the problem.
The problem was originally a rough idle where the car would feel as it was misfiring a lot and the whole car would shake. Also the idles would be sporadic ranging between 500-1200. I did some research and saw that the IAC, MAF or pretty much any other sensor leading to the throttle body would most likely be the culprit. That being said I cleaned the IAC (didn't fix it so later replaced the IAC), replaced the MAF, replaced the TPS, cleaned the heck out of the TB and upper intake manifold, replaced the upper intake manifold gasket, put new spark plugs and wires in and hoped the problem would be fixed. After all of that work I started her up and there was still a rough idle although she did sound much much better. I then read about possible vacuum leaks and although I could not hear any I replaced all the hoses going to the upper intake manifold. when I reset the ECU by disconnecting the battery the car idled very odd when starting up nearly stalling and then shooting up to 1500 RPMs and kept doing that until I drove down the street at which point it would only jump between 900-1100RPMs. I then replaced the distributor cap & rotor and the distributor coil pack since they all seemed slightly corroded. Now the car has problems starting cold where it will take 5-8 seconds of cranking for the car to turn on and after it turns on the car will idle between 600-1.2k RPMs until I drive down the road at which point it will idle at around 1k and will jump up or drop down very slightly almost to the point of not mentioning. Also the misfire feeling is nearly gone but I can still feel it slightly when I am at a stop light. Every once in a while when I cold start the car the volt gauge in the car will jump around some before evening out too. Another issue I have that is probably related to it all is that if I start at 0MPH and slowly let off the clutch without giving the car any gas it will go into gear and if I try to cruise at about 1k RPM down the road then the car will start to buck. The bucking will be every few seconds at first but if I do not give the car gas the time in-between each buck will decrease until it feels like you are trying to go off-roading(lol). Finally, I had the battery and alternator checked at the auto store the other day and the test said they were both fine however when we were testing the battery the guy asked me to turn my headlights on and the AC on max and when I did that the cars idle kept dropping to the point where it nearly stalled and then shot up to 1500-2k RPMs
Sorry for this super long post but I wanted to give as much info as I could. Any help would be greatly appreciated and I'm hoping the car isn't a lost cause.
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