esc - The 1947 - Present Chevrolet & GMC Truck Message Board Network

CbHeEaVsYt · 04-09-2005, 02:23 AM

Can anyone tell me wat esc mean it says Electronic Spark Control. I dont know what the heck that means and i think it has to with the ignition.

Any feedback would be great

cb

TwinTurbo · 04-09-2005, 09:35 AM

The ESC is the module on the back of the ECM that controls ignition retard in case of detonation. If you have a computer controlled ignition the ECM controls the timing curve, the ignition module has an Electronic Spark Timing circuit (EST) incorporated, the ECM determines the ignition timing and "tells" the EST to advance or retard timing. Advance is determined from a matrix stored on the prom. If the engine somehow sees detonation the knock sensor (which is basically a microphone) detects this, sends a signal to the ESC which signals the ECM to take out timing, usually 3 or 4 degrees every second until the knock is gone, then the ECM will advance timing again slowly

gldevall · 04-09-2005, 03:51 PM

It's a pain in the ass part that will leave you on the side of the road if it ever goes out. However, it can be bypassed and done away with. I think there is an article of Jeff's site that covers the bypass procedure.

http://www.73-87.com/7387garage/drivetrain/escrepl.htm

screwballl · 04-09-2005, 07:02 PM

not to be mean but sounds like Einstein explaining the theory of relativity to a monkey (of course i will admit i am a monkey as well)

**N2TRUX** · 04-09-2005, 09:14 PM

Quote:

Originally Posted by screwballl

not to be mean but sounds like Einstein explaining the theory of relativity to a monkey (of course i will admit i am a monkey as well)

Yeah I had to read it sloooow, but it is a really impressive answer......I think

CbHeEaVsYt · 04-11-2005, 02:06 AM

thanks alot guys i think im deffinetly gonna have to get rid of it before it does fail and leave me stranded

thanks again

cb

04-09-2005, 02:23 AM	#1
CbHeEaVsYt Pick up man Join Date: Feb 2005 Location: trenton mi Posts: 135	esc Can anyone tell me wat esc mean it says Electronic Spark Control. I dont know what the heck that means and i think it has to with the ignition. Any feedback would be great cb __________________ heres sum pics of my truck 82 silverado c10 heres my baby 1990 k1500 check out this 1957 chevrolet for sale

04-09-2005, 09:35 AM	#2
TwinTurbo Registered User Join Date: Sep 2003 Location: The Netherlands Posts: 994	The ESC is the module on the back of the ECM that controls ignition retard in case of detonation. If you have a computer controlled ignition the ECM controls the timing curve, the ignition module has an Electronic Spark Timing circuit (EST) incorporated, the ECM determines the ignition timing and "tells" the EST to advance or retard timing. Advance is determined from a matrix stored on the prom. If the engine somehow sees detonation the knock sensor (which is basically a microphone) detects this, sends a signal to the ESC which signals the ECM to take out timing, usually 3 or 4 degrees every second until the knock is gone, then the ECM will advance timing again slowly Last edited by TwinTurbo; 04-09-2005 at 09:37 AM.

04-09-2005, 03:51 PM	#3
gldevall Registered User Join Date: Mar 2003 Location: Walker, LA Posts: 2,925	It's a pain in the ass part that will leave you on the side of the road if it ever goes out. However, it can be bypassed and done away with. I think there is an article of Jeff's site that covers the bypass procedure. http://www.73-87.com/7387garage/drivetrain/escrepl.htm __________________ Gary -1986 SWB: lowered 4/6, SOLD!!! -Best 1/4 mile: 14.51 @ 91.01 MPH -2001 Pewter Tahoe, billet grill, Corsa Sport Cat-back, K&N FIPK SOLD!!! -2004 Z-71 Extended cab with a flowmaster, BDS 6.5", 3" BL, 35x12.5x18 Trail Grapplers on Pro-Comp 18x9 wheels

04-09-2005, 07:02 PM	#4
screwballl Tonawanda 454 Join Date: Mar 2004 Location: Liquid Sunshine State Posts: 2,755	not to be mean but sounds like Einstein explaining the theory of relativity to a monkey (of course i will admit i am a monkey as well) __________________ 91 Chevy Suburban Tonawanda 454 R2500 - SOLD!!! 04 Dodge Durango 5.7L Hemi 2WD, 24K miles (as of July 2011) In the past 30 years about 90% of Fords are still on the road, the other 10% made it home. -------------------

04-11-2005, 02:06 AM	#6
CbHeEaVsYt Pick up man Join Date: Feb 2005 Location: trenton mi Posts: 135	thanks alot guys i think im deffinetly gonna have to get rid of it before it does fail and leave me stranded thanks again cb __________________ heres sum pics of my truck 82 silverado c10 heres my baby 1990 k1500 check out this 1957 chevrolet for sale



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