A serious problem - ZR-1 Net Registry Forums

tomtom72 · 07-26-2007

I'm just a hack but I think if you can drive the car with a scanner plugged into the data port....what's the difference if just the pins are jumped?...I would think to the EEC system there is no difference. How would the system know if a scanner was attached or if the pins were just jumped?

JMHO
Tom

8upZR1 · 07-26-2007

What type of scanner is this and where can I get one? Does the ECU run in its normal fashion when the pins are jumped? No one has posted that this will surely fry an ECU so I may do some extensive testing today, driving with the pins jumped.

I will post pics of the manifold as soon as I can. Hopefully I can do some dyno testing when the car runs right. My neighbor owns a dyno shop and will let me get a full day for $125. Can't beat that.

I have replacement components for most ignition pieces. Swapping pieces has not been fruitful so far. I have an MSD box hooked up. It has an indicator that blinks according to various problems and it says that the ignition is operating properly, for what it is worth. MSD supplies a plug for the harness so you can convert back to stock by simply unplugging the box and plugging in this plug. I do this with no result.

We Gone · 07-26-2007

Quote:

Originally Posted by tomtom72

I'm just a hack but I think if you can drive the car with a scanner plugged into the data port....what's the difference if just the pins are jumped?...I would think to the EEC system there is no difference. How would the system know if a scanner was attached or if the pins were just jumped?

JMHO
Tom

I have to agree you need to hook it up to a scan tool at this point...Not sure where you are in GA but a buddy of mine in Fayetteville has a shop and does have a Snap-on scan tool..You may want to give him a call and see what he would charge to run a few tests.. he does know ZR-1s and has done a lot of work on them..

John @ Corvette Country 770-461-5211

Steve

07-26-2007	#1
tomtom72 Join Date: Dec 2004 Location: Jacksonville, FL USA Posts: 4,609	Re: A serious problem I'm just a hack but I think if you can drive the car with a scanner plugged into the data port....what's the difference if just the pins are jumped?...I would think to the EEC system there is no difference. How would the system know if a scanner was attached or if the pins were just jumped? JMHO Tom __________________ 1990 ZR-1, Black/grey, #2233, stock. ZR-1 Net Reg Founding Member #316 & NCM member

07-26-2007	#2
8upZR1 Join Date: Jun 2006 Location: Thunderbolt, Ga. Posts: 253	Re: A serious problem What type of scanner is this and where can I get one? Does the ECU run in its normal fashion when the pins are jumped? No one has posted that this will surely fry an ECU so I may do some extensive testing today, driving with the pins jumped. I will post pics of the manifold as soon as I can. Hopefully I can do some dyno testing when the car runs right. My neighbor owns a dyno shop and will let me get a full day for $125. Can't beat that. I have replacement components for most ignition pieces. Swapping pieces has not been fruitful so far. I have an MSD box hooked up. It has an indicator that blinks according to various problems and it says that the ignition is operating properly, for what it is worth. MSD supplies a plug for the harness so you can convert back to stock by simply unplugging the box and plugging in this plug. I do this with no result.