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Next: Small problem
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External
Since: Jul 15, 2004
Posts: 17
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(Msg. 1) Posted: Mon Jan 01, 2007 8:55 pm
Post subject: 86 GT 5.0 Idle Question
Archived from groups: rec>autos>makers>ford>mustang (more info?)
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I have a 1986 Mustang GT 5.0 with the five speed manual trans. After warm
up and when idling, the engine idle speed "surges" (ie. it varies up and
down, slightly, but noticeably).
Anyone had any experience with this, what is the matter and what I might do
to correct it?
Thanks a bunch.
Larry |
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External
Since: Jul 06, 2005
Posts: 97
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(Msg. 2) Posted: Tue Jan 02, 2007 6:55 am
Post subject: Re: 86 GT 5.0 Idle Question [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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I think a surging idle has been addressed in this group 100 times. Do a
search on it. 86 is EFI? Sounds like the air intake and any sensors in it
needs a good cleaning.
Brad
"LR" wrote in message
>I have a 1986 Mustang GT 5.0 with the five speed manual trans. After warm
>up and when idling, the engine idle speed "surges" (ie. it varies up and
>down, slightly, but noticeably).
>
> Anyone had any experience with this, what is the matter and what I might
> do to correct it?
>
> Thanks a bunch.
>
> Larry
> |
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External
Since: Jan 14, 2005
Posts: 12
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(Msg. 3) Posted: Wed Jan 03, 2007 4:04 pm
Post subject: Re: 86 GT 5.0 Idle Question [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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LR wrote:
> I have a 1986 Mustang GT 5.0 with the five speed manual trans. After warm
> up and when idling, the engine idle speed "surges" (ie. it varies up and
> down, slightly, but noticeably).
>
> Anyone had any experience with this, what is the matter and what I might do
> to correct it?
>
> Thanks a bunch.
>
> Larry
That sounds like the idle air bypass solenoid and throttle body need to
be cleaned out.
The IABP solenoid mounts to the side of the throttle body. You can
unbolt it (disconnect wiring harness) and clean it out with a cleaner.
At the same time clean out the throttle body and the holes that go into
where the IABP solenoid mounts.
Oh yeah, don't tear the gasket...
Steve
72 Skylark Custom455 >> Stay informed about: 86 GT 5.0 Idle Question |
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External
Since: Aug 31, 2005
Posts: 25
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(Msg. 4) Posted: Wed Jan 03, 2007 5:02 pm
Post subject: Re: 86 GT 5.0 Idle Question [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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LR wrote:
> I have a 1986 Mustang GT 5.0 with the five speed manual trans. After warm
> up and when idling, the engine idle speed "surges" (ie. it varies up and
> down, slightly, but noticeably).
>
> Anyone had any experience with this, what is the matter and what I might do
> to correct it?
>
> Thanks a bunch.
>
> Larry
My car did the same thing; cleaning the IAC fixed it.
http://www.muscularmustangs.com/iac.php
Good luck,
John >> Stay informed about: 86 GT 5.0 Idle Question |
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External
Since: Oct 29, 2006
Posts: 206
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(Msg. 5) Posted: Wed Jan 03, 2007 10:17 pm
Post subject: Re: 86 GT 5.0 Idle Question [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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A Guy Named Steve wrote:
> LR wrote:
>> I have a 1986 Mustang GT 5.0 with the five speed manual trans. After warm
>> up and when idling, the engine idle speed "surges" (ie. it varies up and
>> down, slightly, but noticeably).
>>
>> Anyone had any experience with this, what is the matter and what I might do
>> to correct it?
>>
>> Thanks a bunch.
>>
>> Larry
>
> That sounds like the idle air bypass solenoid and throttle body need to
> be cleaned out.
>
> The IABP solenoid mounts to the side of the throttle body. You can
> unbolt it (disconnect wiring harness) and clean it out with a cleaner.
> At the same time clean out the throttle body and the holes that go into
> where the IABP solenoid mounts.
>
> Oh yeah, don't tear the gasket...
>
> Steve
> 72 Skylark Custom455
>
Well, well. Look what the Skylark drug in... 
--
“I intended that "not stupid" be a requirement.” – Seth
Breidbart >> Stay informed about: 86 GT 5.0 Idle Question |
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