Motor Swap SectionTech and Follow-My-Build Threads for members looking to put a different engine in their Mustang
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Alright so I've successfully swapped my motor. I got a 97 NPI for 400 bucks because I blew the bottom end of my old 02 motor. I know its a decrease in power, I just need transportation and a mustang that sounds like... well a mustang. So here are the issues I'm having.
The car starts and runs for as long as I want it to, however... The idle is high. It's sitting at like 1500 at all times. And if I rev the engine up to say like 4,000 it stays up there at 4,000 and gradually falls back to 1,500. When I say gradually, I mean like over 10 seconds.
Another thing is, my headers are getting red hot. They are glowing orange. And it's not every header. Only 2 on the passenger side.
My alternator isnt working properly either, but this is because the clip that goes into it is broken. I have a new one on the way but I'm not sure if this could account to my idling problem.
Any help or advice would be great and very helpful. Thanks.
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I'd pull the spark plug on #2 and see if its running lean, should be light brown, if lean it will be white.
2012 Mustang Premium 6 speed Manual
Starkey Fog Lights
5 spoke chrome American Muscle 18" x 9" wheels
Nitto 255/45ZR18 Tires
H&R Sport Front and Rear Sway Bar
J&M lower control arms
TMI adjustable tilt headrests
Gaslock LED Shift ****
Shelby door subs
Sony 200W amp
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