P0320 Fault Code - Ford Mustang Forum

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post #1 of 5 (permalink) Old 02-23-2006 Thread Starter
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P0320 Fault Code

Hey guys,I haven't been here for a while. After the rebuild my 5.0 is running better than ever and is gettin tired of eatin rice. My buddy has a 98 4.6 GT. It has been running eratic. missing, stalling and even dieing completely. Sometimes it runs great and then it starts acting up. Pulled the code P0320 but it is a very broad range....anyone seen this or have any ideas?????

1990 5.0 LX
Flowmaster American Thunder Cat-Back, MAC C.A.I., Cervini Hood ,Cobra R Rims 16", Underdrive Pullies,TFS 302 Engine Kit, Twisted Wedge Heads, TFS Valve Covers, TFS Forged Pistons, TFS Track Heat Intake, Stage One Cam, BBK Shorty Headers,TFS Roller Rockers, 70MM Throttle Body, NOS 150
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post #2 of 5 (permalink) Old 02-23-2006
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What is the description given with the code?? It sounds a lot like a bad IAC.

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post #3 of 5 (permalink) Old 02-23-2006
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That sounds like a crankshaft positioning sensor problem.
The ECU (PCM) doesn't know where it's pistons are and therefore fires at the wrong time or not at all.
You might want to clean/inspect the gears and sensor and wiring of the crankshaft positioning sensor.
After that, reset the ECU. (battery off for 20 minutes, headlight on)

Autozone has a good article on that:


Hope this helps!

2006 Ford Mustang GT (daily driver)
other cars
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post #4 of 5 (permalink) Old 02-25-2006
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take a look ca this link. i hope it helps.

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post #5 of 5 (permalink) Old 02-05-2010
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Location: miami
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hi people.

my mustang v6 when the engine warned up started to misfires and eventually goes off..... its turn on again ease.. also loses power, i'm installing the diagnostic computer and got these two failure code P0320 , P0618

anybody can help me??
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