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Old 09-20-2015, 01:46 PM   #1
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Running problems

So I got my headers and mid pipe on everything is tightened up no leaks that I know of but now she just doesn't run like she used too. For starters I have an extreme loss of torque I used to be able to chirp my tires all the time and now I hardly can. Second after I have been driving it and it's pretty warm and I shut it off for maybe 5-10 minutes to do something and go to start it and it sounds like it stutters to start like it will pause at a low rpm then go back up to about 900 so I'll let it sit for a second and warm up then I'll put it in reverse and the rpms drop then go back up then I'll start moving and it will sputter and sometimes I can save it but most of the time it just dies. Any ideas on what I could do to fix these?


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Old 09-20-2015, 02:43 PM   #2
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I am not super familiar with your model of stang. But is it tuned? Or chipped?
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Old 09-20-2015, 02:47 PM   #3
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I am not super familiar with your model of stang. But is it tuned? Or chipped?

No there is no chip I have been thinking about going to get it tuned but don't know where to go


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Old 09-20-2015, 02:53 PM   #4
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Try disconnecting your battery and letting all of the electricity from the ECU discharge. Then reconnect it and start it up. Let it idle for a few minutes.

Maybe it will relearn some ****
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Old 09-20-2015, 02:55 PM   #5
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Try disconnecting your battery and letting all of the electricity from the ECU discharge. Then start it up and let it idle for a few minutes. Then start driving it around with very steady throttle application. It should relearn some **** and hopefully run better.
I was going to suggest a battery disconnect also.

If that doesn't work then you might need a tune/chip to assist the car with running properly.

http://www.americanmuscle.com/sct-4b...om-9498gt.html


I know on the newer Stangs if you add headers and mid pipe, you usually need a tune/updated tune or you will start throwing error codes or the car will run poorly.
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Old 09-20-2015, 10:54 PM   #6
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You more than likely did not connect something, broke something or connected something wrong.

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Old 09-28-2015, 05:47 PM   #7
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Not trying to make stupid sugestions. but make sure your spark plug wires are in the correct order.

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Old 09-28-2015, 09:53 PM   #8
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Not trying to make stupid sugestions. but make sure your spark plug wires are in the correct order.

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Well I found out my power steering fluid was low put some new in but I'm thinking I might do a flush on that cause it seems to happen when I turn or have the wheel turned when I'm backing up


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Old 09-28-2015, 10:21 PM   #9
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When you open up the exhaust you move the torque curve up the rpm scale.a pcm retrain may help some ,but for max performance you will need a tune!
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Old 09-29-2015, 06:48 AM   #10
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When you open up the exhaust you move the torque curve up the rpm scale.a pcm retrain may help some ,but for max performance you will need a tune!

Okay that makes sense thank you so much


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Old 09-29-2015, 08:10 AM   #11
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just add nitrous and spray whenever it seems to acting like a lil *****
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Old 09-29-2015, 10:19 AM   #12
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Honestly the stuttering is not normal.

Check and recheck for exhaust leaks and vacuum leaks.

Run your codes.

Do a base idle reset.

Make sure your O2 sensors are in good running order, not burnt on the headers, grounded correctly.

Make sure your ground straps are in good condition.

It's the little things trust me.
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Old 10-05-2015, 01:24 PM   #13
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Definitely do a base idle reset first then drive the car for 10-15 minutes, take it back home,run a koeo koer scan & post any codes you get on here.The cel does not have to be on in order for codes to be present.This scan should always be done after mods or repair work has been completed, to make sure the EEC accepted the changes.Here are some links just in case youre not familiar with how these tests are done.
Summarized/Corrected Base Idle Reset Procedure
DIY KOEO/KOER/Cylinder Balance Self-Test Procedure[COLOR="Silver"]
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Old 10-19-2015, 12:24 AM   #14
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I need to do the idle
Relearn.


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