SC'd 97 cobra leaning out
Thread Starter
Joined: Apr 2018
Posts: 1
From: VA
SC'd 97 cobra leaning out
Hello everyone, I need some help. So I just recently purchased a 1997 Cobra with a Vortech V-1 supercharger from a long time friend of mine. Before buying it he told me that he had ran into major problems with the car leaning out and as we all know leaning out the motor can cost some big $ to replace. When he bought the SC a couple of years ago he bought it as a kit, so it came with fuel injectors, a newer high flow fuel pump(unknown gph) and some other things I can't think of. Since then he's replaced the plugs and wires. When the supercharger was installed the car was tuned and made 511HP to the wheels on a mustang Dyno. Since then the car has had the same reoccurring problem... Leaning out and throwing a check engine light. Does anyone have any helpful suggestions? Thanks!
5th Gear Member
Joined: Jul 2012
Posts: 3,628
From: ohio
Vacuum leak somewhere after the MAF either a line or in the intake tube/manifold , exhaust leak before upstream 02s, maybe kit came with a crappy fuel pump and its on its way out. MAF is dirty and needs cleaned, 02 sensors are starting to fail due to carbon build up.
You will have to take it to a tuner who can do live data and look at the fuel trims and other sensor data to get a better picture of what is causing it to go lean.
You will have to take it to a tuner who can do live data and look at the fuel trims and other sensor data to get a better picture of what is causing it to go lean.
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momob009
4.6L (1996-2004 Modular) Mustang
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Jan 15, 2008 08:18 AM
