I am ordering a new ECM for my 2005 programmed by Ron Zimmer at Z-industries. Evidently, when putting a new ECM in these vehicles, they will run after the install, but should get a "crank variation relearn" at my Chevy dealer. Any idea of average cost and is this quick and easy for them to do? Any info appreciated.
Also, any comments from members who have a Zimmer tune?
Thanks

 

My dealer installed my Z-tuned ECM and did the relearn and charged me 60.00.Cars runs great no problems in 2k miles.

 

Ron Z knows his stuff. I had my C-6 tuned 9 months ago and have not regretted it.

 

scary is what they have to do to program the relearn. I happened to come across this when looking for something else. they gotta bounce the engine off the rev limiter. Wouldn't that make you happy to witness that!!

 

Here' the procedure used to do the "Relearn" for a reflashed ecm,takes about 5 minutes.
http://www.cardone.com/cardoneflash2...T%20103-77.pdf
This was the procedure the dealer used on my car,I was there and watched while they did it.Car runs great no codes in 2500 miles,Ron Z does a great job.

 

That's not the proper proceedure for the C6. here it is per the manual:

(short version)


Accelerate to Wide Open Throttle
Release throttle when the fuel cut-off occurs
Observe fuel cut off point
Engine should not accelerate past calibrated cut off point
Release throttle immediately if value is exceeded

If you need the full version, just let me know.

 

I just bought a new ECM and am going to send it off to Ron Zimmer for programing. When I get it back from Ron, what do Ieed to do? Will he give me specific instructions this "re-learn" thing? Do I need to take it to my Chevy Dealership?

Please advise on what I do when I get the ECM back in the mail

Thanks guys

 

I just do a quick stab of the throttle to WOT and release.

Mark

 

Mark - What does WOT mean?

 

Wide Open Throttle.

One quick zing to fuel cutoff is all that's needed for a relearn.

Mark

 

oh, ok.... Dud, I should have been able to figure that out.... So just punch it one time to the rev limiter or so where I notice it start to die out. Should I do this while the car is neutral or while I am driving it?

I am new to all of this with a Vette, my other cars where a bit different..

Thanks for the help

 

You need to use a Tech 2 scan tool following the procedure for the relearn. But, to answer your question- neutral (at least for a stick car). I don't get to work on many automatic trans cars.

Mark

 

Here's the procedure:

Document ID# 1418309
2005 Chevrolet Corvette


--------------------------------------------------------------------------------

CKP System Variation Learn Procedure
Install a scan tool.
Monitor the engine control module (ECM) for DTCs with a scan tool. If other DTCs are set, except DTC P0315, refer to Diagnostic Trouble Code (DTC) List - Vehicle in Vehicle DTC Information for the applicable DTC that set.
Select the crankshaft position (CKP) variation learn procedure with a scan tool.
The scan tool instructs you to perform the following:
Accelerate to wide open throttle (WOT).
Release throttle when fuel cut-off occurs.
Observe fuel cut-off for applicable engine.
Engine should not accelerate beyond calibrated RPM value.
Release throttle immediately if value is exceeded.
Block drive wheels.
Set parking brake.
DO NOT apply brake pedal.
Cycle ignition from OFF to ON.
Apply and hold brake pedal.
Start and idle engine.
Turn A/C OFF.
Vehicle must remain in Park or Neutral.
The scan tool monitors certain component signals to determine if all the conditions are met to continue with the procedure. The scan tool only displays the condition that inhibits the procedure. The scan tool monitors the following components:
• CKP sensors activity--If there is a CKP sensor condition, refer to the applicable DTC that set.

• Camshaft position (CMP) sensor activity--If there is a CMP sensor condition, refer to the applicable DTC that set.

• Engine coolant temperature (ECT)--If the ECT is not warm enough, idle the engine until the engine coolant temperature reaches the correct temperature.

Enable the CKP system variation learn procedure with a scan tool.
Important: While the learn procedure is in progress, release the throttle immediately when the engine starts to decelerate. The engine control is returned to the operator and the engine responds to throttle position after the learn procedure is complete.


Accelerate to WOT.
Release when the fuel cut-off occurs.
Test in progress
The scan tool displays Learn Status: Learned this ignition. If the scan tool indicates that DTC P0315 ran and passed, the CKP variation learn procedure is complete. If the scan tool indicates DTC P0315 failed or did not run, refer to DTC P0315 . If any other DTCs set, refer to Diagnostic Trouble Code (DTC) List - Vehicle in Vehicle DTC Information for the applicable DTC that set.
Turn OFF the ignition for 30 seconds after the learn procedure is completed successfully.
The CKP system variation learn procedure is also required when the following service procedures have been performed, regardless of whether DTC P0315 is set:
- A CKP sensor replacement

- An engine replacement

- An ECM replacement

- A harmonic balancer replacement

- A crankshaft replacement

- Any engine repairs which disturb the CKP sensor relationship

 

Thanks for the GREAT info Mark... Is my local Speed/Dyno shop going to know and have a "Tech 2 Scan" tool or will I have to go to the dealership?

Thanks again

 

All GM dealers have them. Some aftermarket tuners also have them. I do not know if only a Tech 2 has the capability or if any aftermarket scanners can do it.
Geeez..........If you were near me, I'd just do it for ya.

Mark

 

Thanks to everyone that responded to my post. A lot of good info here!

 

A lot of forum members seem to be recommending the Innova 3030 scanner, and I've heard you can rent them from Auto zone, as well. Does anyone know if these handhelds have the ability to do the relearn?

 

Has anyone run their car without this, and how did it feel?