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Mustangn

04-21-2007 01:41 AM

Different Idle sound

When my engine is Idling and I press the power window button up or down the Idle sound becomes different. Is this something I should be worried about.
I have a 91 mustang GT. Stock

PRO50SC

04-21-2007 01:51 AM

RE: Different Idle sound

Is it a measurable difference, 2-300 rpms?

The window motor pulls a lot of current from the charging system but it should not be enough to drag the idle down. Either the window motor is drawing too many amps(does it move slow) or possibly the alt is not putting out enough.

Mustangn

04-21-2007 02:00 AM

RE: Different Idle sound

No its not 200-300 rpm.Its not noticable on the rpm gauge but the engine sound becomes deeper.

PRO50SC

04-21-2007 02:03 AM

RE: Different Idle sound

Still running the stock alterator? Is this a new issue?

Mustangn

04-21-2007 02:14 AM

RE: Different Idle sound

It is the stock altenator. I just never noticed this before, but than again I neverlistendto the engine while moving the window up or down.

PRO50SC

04-21-2007 02:19 AM

RE: Different Idle sound

LOL I wouldn't worry about it.

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