ECM failure??

[belsie]

Put a Red's chip I got with car in my ecm that been working fine! After chip install SES light comes on & blinks steady, car runs but not well. Pulled chip & put former chip back in and same bad result.
Put original chip into another ECM and all is well.........

My question is did I blow the ECM, damage the calpak or.....??? Later tried another ECM with orig. chip & calpak from 2nd ECM and all is well so far.

Can the ECM be damaged this way? is it worth rebuilding? is calpak bad ? if so how do I test other than process of elimination or trial & error??

Which is the weakest link , the ECM or the calpak?

Seems like 2nd chip?? and / or calpak (which was fine until new chip was installed) HELP..................

 

[87-WE2]

Did you disconnect ECM power before changing chip?


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[whitehot1]

Maybe there was some water in the ecm and when you moved the ecm around removing and installing the other chip it got into / onto some components causing the ecm to be damaged. Maybe if you stand the questionable ecm up on end like when it's installed in the kick panel for a few days it might dry out,worth a try what do you have to lose since you can't use it like it is.

O'Reilly auto parts has a good deal on a replacement ecm for $80.00 plus core charge with a lifetime warranty if you need one. It's a BWD brand i have one in my car and it's been working great.

 

[earlbrown]

if you get one from Oreillys, tell them to load "TurboBuicks Garage" account #146667 into the local stores computer. The discount on an ECM might be worth a few bucks.

 

[belsie]

Thanks guy, yes it was disconnected and it has been out of the car and sitting on my desk in dry atmosphere for over a month. I put in back in yesterday to see and still the same "SES" blinking rapidly and runs poor. Are the cal paks extremely sensitive? I am hesitant to put this one in any other ecm................

 

[Ktbregal]

Plug it in,key on, and tap it with something all over it. Mine did the same thing. Tap test. It could be a bad soldier run. I installed another one and taped it. Its fine now. Don't get rid of it it can be fixed.

 

[1987GNASTROROOF]

Calpaks dont go bad that often but I have seen bad chips as to rebuild your almost 30 year old ECM is not really worth the time and $$ when you can get 1 for less $$$ that what you problaby will spend on another ECM.


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[hiboom]

I have seen a few of the pins on the prom chip not making good contact with the prom holder and I would use a straight pin and bend them a little to make sure the prom chip would seat properly