Hi

I have 4 brand new platinum sport 1000 ecu's here that all refuse to start when the ecu body temp goes over 60 degrees celcius (as measured by a temperature gun).

From all the logging i have done

T per H stays on -1 when the temperature goes over 60.

I have swapped wiring looms, tried the ecu's in different cars, tried different CAS sensors and the only common denominator is the ECU's themselves.

Other than stating the obvious and telling me that the ECU should not be 60 degrees, i want to know why this happens and if it is documented.

 

Thats pretty hot. What is the system voltage?

 

With the car off voltage stays around 12.4 and drops to just under 11 when cranking

 

^ What about when running?

 

If the case is 60C the board and drivers are much hotter. Sounds like an ecu location issue not an ecu problem. I know the genesis units had some temp problems but they were inside the engine bay.

 

13.7-14.0 when running.

ECU location may or may not be a problem.

Please see my question.

Does haltech document a temperature limitation anywhere?

 

Are you sure the ECU is shutting down? Sure you don't have a temp related trigger issue? When the trigger count goes to 0 you're not going to get an injection or ignition pulse. VR sensors are heat sensitive.

I've seen two or three of you mention similar issues but I've never had it happen to myself or any customers. Probably have a couple hundred Haltech ECUs or various series out in the field and have never been approached by a customer saying this is an issue. Not saying it's not happening for you. Just very odd to hear of it.

 

C.Ludwig, i have had a disucssion with a few workshops who have had the same issue and reported it to haltech only to be told "that no body else has mentioned anything so it's not the ecu", its a very frustrating answer.

When the issue is happening, i have swapped multiple cold Crank angle sensors with no success. The only change that made a difference was a cold ECU.

Please note the ECU itself does not shut down. I simply get T per H on -1.

Please note since putting a massive heat sink on the ECU with a FAN the issue does not happen at all any more. As a test i removed the heatsink and fan for today and issue was present with in an hour. i repeated this process with 2 other brand new ps1000's and the results are consistent. As soon as the body of the ECU tips over 60-64 degrees T per H goes to -1 and no start.

 

Higgi and i ran into this, he more thoroughly diagnosed the problem added fans to the ecu, and i believe its ok. Higgi's was quite funny as he datalogged the ecu while it did this, and on his the output section shuts down, but the rest of the ecu works, so the data log looks 100% normal, even though the ecu isn't outputting at all.

we were both running 20B's, so we're using more outputs.

Haltech had a couple of software updates that helped, but i think the thing just exceeds the temperature of the drivers, and the drivers shut off.

 

Did his show a good trigger since last home count? Did it show a value for injector pulse width other than 0?

 

yes to both

 

So it's a different failure mode than what rx72c is describing.

 

If anyone cares(haltech included) i can easily replicate the issue.
Pulled the ps2000 from my rx7 and put it in some light today till the temperature gun registered 62 degrees.
T per H -1 = no start.
As soon as it cooled down. Started.

 

Automotive spec components are supposed to handle -40degC to 130degC.

Sounds like the components aren't up to snuff.

 

This may interest you..Post #37 shows a pic.
https://www.rx7club.com/haltech-foru...roblem-953707/

 

Are you able/willing to elaborate on this more?
Can you open the case and replicate the issue by putting stress on ECU? With open case, you might be able to focus on hottest spot / chip on the board......
If we know which chip is bad, we should be able to replace it with another one to fix this issue properly....

 

Are you from haltech?

 

no, i am not from HALTECH, i just have same/similar problem with my PS2000 as you might have noticed in linked threads...
i as well recently moved ecu from one car to completely different setup, new harness and problem is same or worse...

 

To make sure we are dealing with the same issue if you add a number display in, for T per H, does your stay on -1 when the issue is happening?

Thanks

 

Will check