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GT S197 General Discussion This section is for technical discussions pertaining specifically to the V8 variation of the 2005 and newer Ford Mustang.

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Old 03-23-2012, 04:15 PM   #21
moosestang
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fuse 47 does a lot.

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Old 03-23-2012, 04:21 PM   #22
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Quote:
Originally Posted by moosestang View Post
Well that seems odd. It didn't set a code? What was fuse 47 for?
no codes at all.

#47 is for o2 sensors, cam sensors, A/C, plus other things.

I think the next step is to change the cam sensor?
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Old 03-23-2012, 04:23 PM   #23
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I hope only the cam sensor is bad.
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Old 03-23-2012, 05:23 PM   #24
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So did you reinstall fuse 47 and then unplug the passenger side cam sensor? It accelerated normally after that?

I'm surprised that the car didn't set a code after unplugging the cam sensor. The cam sensors are pretty cheap, so replacing it won't cost you much.

I'm still suspecting the alternator leaking ac current (ripple), which is throwing off your cam sensor. Unplugging it may cause it to default to a set table and temporarily cure your problem. I wish I knew what the computer does when it doesn't get the signal from the cam sensor.
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whipple HO SC,FRPP k springs, Pypes mid mufflers, hurst, frpp TB, 4.10's, spohn lca's, adj. UCA, relo brackets, 1 piece DS, spec stg 3+ clutch. 12.52@117.6mph so far with a 2.01 60 ft time

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Old 03-23-2012, 05:30 PM   #25
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Originally Posted by moosestang View Post
So did you reinstall fuse 47 and then unplug the passenger side cam sensor? It accelerated normally after that?

I'm surprised that the car didn't set a code after unplugging the cam sensor. The cam sensors are pretty cheap, so replacing it won't cost you much.

I'm still suspecting the alternator leaking ac current (ripple), which is throwing off your cam sensor. Unplugging it may cause it to default to a set table and temporarily cure your problem. I wish I knew what the computer does when it doesn't get the signal from the cam sensor.
we reinstalled the fuse, then unplugged driver side cam sensor, car drove badly.
The plugged driver side, and unplugged passenger side cam sensor, car drove perfectly fine.

we let the car idle for a while.

hope replacing the sensor solves it. We are going to the drag this Monday.

thanks
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Old 03-24-2012, 11:53 AM   #26
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* UPDATE *

we put new cam sensors, but it didn't solve the problem.

car doesn't drive well with new passenger cam sensor plugged.
but runs very well with passenger cam sensor unplugged.
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Old 03-24-2012, 01:33 PM   #27
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I would trace the pigtail going to the fuse box and also inspect the Pigtail and connection.

You should be working with a tuner that knows S197s.
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Old 03-24-2012, 07:31 PM   #28
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Quote:
Originally Posted by Fahad_H View Post
* UPDATE *

we put new cam sensors, but it didn't solve the problem.

car doesn't drive well with new passenger cam sensor plugged.
but runs very well with passenger cam sensor unplugged.
I was afraid of that. This is very odd and I'm tempted to go out and unplug my passenger side sensor just to see if mine will run fine without it. I'm betting it won't.
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Old 03-25-2012, 01:15 PM   #29
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Quote:
Originally Posted by Simon1 View Post
I would trace the pigtail going to the fuse box and also inspect the Pigtail and connection.

You should be working with a tuner that knows S197s.
all is fine

Quote:
Originally Posted by moosestang View Post
I was afraid of that. This is very odd and I'm tempted to go out and unplug my passenger side sensor just to see if mine will run fine without it. I'm betting it won't.
someone on another forum thinks it kills the VTC.
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Old 03-26-2012, 07:25 PM   #30
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all is fine



someone on another forum thinks it kills the VTC.
Well it would seem that you have misfires with the sensor plugged in, but don't with it unplugged. I don't know enough about the Variable cam timing to know why it would act that way.
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Old 03-26-2012, 07:25 PM
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