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4.0 liter engine quit,s

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Old 09-25-2016, 08:02 PM
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Terryw
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Default 4.0 liter engine quit,s

We have a 2006 with a 4.0 v6 automatic transmission, it quit,s at random when slowing down no ck eng, light. One time I did notice the wrench symbol on the dash was on. It has no codes and other wise runs fine about 70'000 miles on it we have had the vehicle 1 year now. It happens after it has been driven for at least 20 minutes. Anyone have any idea,s I,m a heavy truck mechanic & not that familiar with auto,s
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Old 09-25-2016, 08:13 PM
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99GTvert
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Damn thats scary. Connections tight on the battery? Was any work done to it recently? Any ignition parts serviced/replaced?
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Old 09-26-2016, 12:34 PM
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JJHoover
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my mustang does it every now and then, I still have no clue why
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Old 09-26-2016, 09:09 PM
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jimkaray
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Possibly the TPS (throttle position sensor) is the culprit. I had similar symptoms quite a few years back and after swapping the TPS it hasn't reoccurred.
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Old 09-27-2016, 10:46 AM
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movielover40
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Does it start right back up after it stalls?
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Old 09-27-2016, 07:18 PM
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Terryw
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Default 4.0 engine quit,s

Originally Posted by movielover40
Does it start right back up after it stalls?
Every time but once it will start up & run fine. One time it started & quit several times as we coasted into our driveway. I don,t think it,s an engine issue or it should have set a code. If I monitor engine functions everything looks normal except timing is bouncing about a 10. Degree span
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Old 09-27-2016, 08:49 PM
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Stangbass
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My 2010 manual used to do something similar on rare occasion. I would clutch in come to a stop and rpms would drop right to the floor. IIRC mine was an exhaust leak on a cheap set of headers. It was also accompanied with a hunting idle.
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Old 09-28-2016, 10:37 AM
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movielover40
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Might be a faulty mass airflow sensor.
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Old 09-29-2016, 08:44 AM
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rls82959
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There is a technical service bulletin for 05-06 fuel pumps.
TSB 06-09-09
This TSB is for vehicles stalling out after coming off a long highway drive.
Probably not your issue, but then again ..........

I know the tsb is for hesitation, but I seem to remember several posts about stalling out after a long drive and it ended up being the fuel pump. Good luck.

Last edited by rls82959; 09-30-2016 at 08:26 AM.
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Old 09-29-2016, 01:46 PM
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Derf00
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Here's a list of known issues (TSBs) https://lmr.com/products/2006-Mustang-TSB-Recall I don't see any matching your exact description but I agree with RLS, Fuel pump related ones sound the most legit 06-9-9. It could be that yours skipped the hesitation and went straight to failing/leaking.
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