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» Northern California Ford Owners     » Automotive   » Tech Talk   » idles like it wants to die

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Author Topic: idles like it wants to die
Strictly5.0MSR032
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Member # 2781

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hey guys i'm new here and just wanted to get some advise and see if you guys could help. i have a 2001 mustang gt and recently put a vortech sq supercharger w/after cooler and it runs great except when sometimes i take it out of gear when i'm going to stop at a stop light and then it starts to idle rough like it wants to turn off, it jumps up and down from about 1000 down to 400rpms and then after a few seconds it goes back to normal, but yesterday it did to me and then it turned off. at first i thought that it only did it when it was cold but after diving it for 20 miles it still did it. anyone have any idea why. would ground have anything to do with this, becuase the battery was transfered to the tunk. thanx.

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2001 Mustang GT
Vortech SuperCharger w/ Aftercooler
42lbs injectors
255 fuel pump
and all the bolt ons

Posts: 99 | From: San Jose, Ca | Registered: May 2003  |  :
Primer GR40
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Member # 476

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have you gotten a tune for it? also check all the hoses on the SC and intake.

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Superdupercharged Cobra
No Transmatic Notch

Posts: 2108 | Registered: Sep 2001  |  :
Strictly5.0MSR032
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Member # 2781

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yeah the car was ready on friday and took it to apex on saturday for byron to tune it. i noticed this when we first started the car after installing the blower then i just thought it needed to get tuned but it still does that now

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2001 Mustang GT
Vortech SuperCharger w/ Aftercooler
42lbs injectors
255 fuel pump
and all the bolt ons

Posts: 99 | From: San Jose, Ca | Registered: May 2003  |  :
Primer GR40
¯
Member # 476

Ford Icon 1 posted      Profile for Primer GR40  Ford pictures for Primer GR40  Author's Homepage     Send New Direct Message       Edit/Delete Post   Reply With Quote       Share this CAFords post on FB
could be the IAC hose loose or a bad IAC valve.

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Superdupercharged Cobra
No Transmatic Notch

Posts: 2108 | Registered: Sep 2001  |  :
Strictly5.0MSR032
¯
Member # 2781

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what does the IAC hose connect too? sorry

--------------------
2001 Mustang GT
Vortech SuperCharger w/ Aftercooler
42lbs injectors
255 fuel pump
and all the bolt ons

Posts: 99 | From: San Jose, Ca | Registered: May 2003  |  :
Primer GR40
¯
Member # 476

Ford Icon 1 posted      Profile for Primer GR40  Ford pictures for Primer GR40  Author's Homepage     Send New Direct Message       Edit/Delete Post   Reply With Quote       Share this CAFords post on FB
it goes from the SC inlet hose (or the powerpipe) to the manifold or TB (not sure on your car).
You can test it if you have an ohmmeter.

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Superdupercharged Cobra
No Transmatic Notch

Posts: 2108 | Registered: Sep 2001  |  :
Strictly5.0MSR032
¯
Member # 2781

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oh ok thanks...yeah i'm going to take it back to the shop where i had it done at on thursday. do you think this would cause it to loose hp? or have to retune it again?

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2001 Mustang GT
Vortech SuperCharger w/ Aftercooler
42lbs injectors
255 fuel pump
and all the bolt ons

Posts: 99 | From: San Jose, Ca | Registered: May 2003  |  :
Primer GR40
¯
Member # 476

Ford Icon 1 posted      Profile for Primer GR40  Ford pictures for Primer GR40  Author's Homepage     Send New Direct Message       Edit/Delete Post   Reply With Quote       Share this CAFords post on FB
before you go back, check all the hoses. Have the shop check the resistance on the IAC valve. It could also be a problem with the tune...

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Superdupercharged Cobra
No Transmatic Notch

Posts: 2108 | Registered: Sep 2001  |  :
Strictly5.0MSR032
¯
Member # 2781

Ford Icon 1 posted      Profile for Strictly5.0MSR032  Ford pictures for Strictly5.0MSR032    Send New Direct Message       Edit/Delete Post   Reply With Quote       Share this CAFords post on FB
ok well i'll make sure i do that. how would i know if i need to retune or not? probably go to apex and talk to them huh?

--------------------
2001 Mustang GT
Vortech SuperCharger w/ Aftercooler
42lbs injectors
255 fuel pump
and all the bolt ons

Posts: 99 | From: San Jose, Ca | Registered: May 2003  |  :
Primer GR40
¯
Member # 476

Ford Icon 1 posted      Profile for Primer GR40  Ford pictures for Primer GR40  Author's Homepage     Send New Direct Message       Edit/Delete Post   Reply With Quote       Share this CAFords post on FB
yeah, apex is probably the best place to go.

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Superdupercharged Cobra
No Transmatic Notch

Posts: 2108 | Registered: Sep 2001  |  :


 
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