Anyone have a EST (electronic spark timing) control mod...

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May 31, 2003 | 03:32 PM

yorkie

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Anyone have a EST (electronic spark timing) control module

go bad, what did it do? How can you tell if you have a bad one?

Eric

Last edited by yorkie; May 31, 2003 at 11:52 PM.

May 31, 2003 | 04:52 PM

thewinner

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wtf u talking about? lol

May 31, 2003 | 05:00 PM

yorkie

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right above the coil there is a module...

It is called the EST. Electronic Spark Timing control module, as stated in my book.

May 31, 2003 | 05:04 PM

yorkie

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some people call it a ICM Ignition Control Module..

My book says EST module.

May 31, 2003 | 08:35 PM

yorkie

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ttt

ttt

May 31, 2003 | 08:44 PM

RUFFIDLNZ

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From: Louisville, KY

If it goes bad your car will not start

May 31, 2003 | 08:50 PM

yorkie

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thanks...

Either good or bad then....

Looks like mine is good.

May 31, 2003 | 11:45 PM

96ZRDR

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From: McAllen Tx. USA

The Electronic Spark Control is the same as the knock sensor. If it is bad, it will definetely set off a code, and automatically pull max timing, and kill your horsepower.

May 31, 2003 | 11:48 PM

xxsaint69x

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From: Peachtree City, GA

and how can u mod it

?

lol
Marcin

May 31, 2003 | 11:50 PM

#10

yorkie

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From: Madison, North Carolina

Mod... or module

It is not the same as the knock module or sensor. It is just above the coil and attached to a finned aluminum bracket that is on the drivers head, take a look.

May 31, 2003 | 11:53 PM

#11

xxsaint69x

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From: Peachtree City, GA

Re: Mod... or module

Quote:

Originally posted by yorkie
It is not the same as the knock module or sensor. It is just above the coil and attached to a finned aluminum bracket that is on the drivers head, take a look.

he was just comparing it to the knock sensor...u will know if they go bad, since your car will be a lot slower then usual.

Btw...i thikn u are talking about the ingition module

May 31, 2003 | 11:54 PM

#12

yorkie

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It is called a EST, in the gm fuel injection book

I have sitting in front of me, EST is Electronic Spark Timing.

May 31, 2003 | 11:56 PM

#13

yorkie

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IT IS NOT the same as a knock sensor

The knock sensor and the est are two different components.

Jun 1, 2003 | 08:31 AM

#14

shoebox

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Re: It is called a EST, in the gm fuel injection book

Quote:

Originally posted by yorkie
I have sitting in front of me, EST is Electronic Spark Timing.

It's not called that on an F-body. The modue is the Ignition Coil[Control] Module (ICM). The circuit is the ignition control circuit.

ESC is the knock sensor circuitry, but he said EST not ESC.

Last edited by shoebox; Jun 1, 2003 at 08:38 AM.

Jun 1, 2003 | 12:07 PM

#15

yorkie

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From: Madison, North Carolina

well reading this right out of a book

EST Electronic Spartk Timing, it covers tuned port and the lt-1. Guess the book is wrong

ICM then..

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