01 3.8 NO POWER

Matt Iverson

New Member
Aug 23, 2019
2
0
1
Montana
Hey everyone I'm new to the site and just joined the mustang club as well. Unfortanetly its neither one I'll be keeping or want.
A little background. It's a 2001 with the 3.8. It's been at our shop for 2 years and the owner had little interest in us diving in any further so I bought it from him...well his daughter.
Anyways it has no power. Starts easy idles pretty good aside from the massive exhaust leak but huge hesitation to rev even in park/neutral. It acts like the exhaust is plugged but....no dice. Could be poor timing but that checks out too. Been thru the cam sensor and maf. I've got no clue where to go. Our scanner says this things idling at a 20+% load. A new engine might have a higher load b4 break in but not that high and ......well they are easily drivable. Only other thing I can think of is it set a code for the manifold runner but....It's a cast aluminum intake does it even have one? And even if so I wouldn't think that would completely castrate the power. It would stick to the short or long runner right? Definitely hoping a diagnostic genius knows what's up and can help out.
 
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huge exhaust leak is a no no and will cause the o2s to dump fuel which can make it run awful

the idle load is fine

I would start by verifying the firing order is correct. If its stock it should be fairly simple to diagnose.
 
+1 on above. The exhaust leak is no good. The un-metered air in the exhaust will make the O2 sensors read "Lean". But the motor isn't Lean. The PCM will respond by adding fuel thus making the motor run rich.

+1 on the 20% load at idle is normal. All of my Fords do it as well. Not the cause of your problem.

Regarding the DTC codes. Always best to post the full DTC codes. There are 1,000's of them and they each have a story to tell.

V6 coil pack wiring diagram
 
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