Joined
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45 Posts
I've been having driveability issues with my 1999 Mustang GT since I purchased it in 2005, and over 2 engines. It regularly bogs down, and runs flat, with a lack of torque. It has never misfired. Some days it will run decent, but not great. When the engine warms up it will get worse. I have checked just about everything, including having the cats cut off and looking for a clog.
When the engine is idling, if I hit the throttle quickly, any more than about half throttle, there is a 1 to 1.5 second delay before the throttle does anything. During this delay, I hear a brief sucking sound through the air filter before the revs increase.
It's been doing this since the beginning, and I'm convinced it is the cause of most of my issues. I have not seen any other mustangs act like this, and I'm fairly certain, once I solve it, the car will drive like new. FWIW, the current engine is out of a 2002. The PCM is the original 1999.
Any Ideas?
When the engine is idling, if I hit the throttle quickly, any more than about half throttle, there is a 1 to 1.5 second delay before the throttle does anything. During this delay, I hear a brief sucking sound through the air filter before the revs increase.
It's been doing this since the beginning, and I'm convinced it is the cause of most of my issues. I have not seen any other mustangs act like this, and I'm fairly certain, once I solve it, the car will drive like new. FWIW, the current engine is out of a 2002. The PCM is the original 1999.
Any Ideas?