I have heard their are settings on some ECUs to allow you to program it to do some neat things. It's PW? I think. It seems high temps is a ban to our beloved FDs. Why can't we program it to do some safety measures if the temps get too high?? Like if it gets to a certain degree then cut to boost to a certain level or cut the max rpms to a certain level or something to prevent it from overheating. In other words don't allow it to overheat via the ECU.

Any ideas out there???

Ken 57 years young,
'94 white, pep, red leather,
mods: Street port and polished stage II, upgraded coolant seals,
Hurley 3mm racing apex seals, XS T04E Turbo Kit,
GReddy SMIC, Pettit ss resonated MP, Pettit ss cat-back,
RP Racing fuel pump, Aquamist 2s water injection kit,
under pulley kit(no air pump), Pettit short shifter kit, boost gauge,
AEM EMS(soon to be), 3-bar MAP Sensor, Profec B(12-2?psi), 1600cc injectors, LaBreck bushings, Evans coolant.
<http://nopistons.com/luv94rx7.html>

 

Maybe Jason from AEM can offer some insight.

Ken

 

I don't believe that most of the overheating failures could have been prevented by anything other than shutting down the engine in time. I believe that most were caused by failure of AST or radiator (or hoses, etc).

The PFC and AEM both retard ignition some based on coolant temperature. But this may not be the extent of what the AEM can do.

From what Jason has said before, you should be able to program something to alert you that there is an issue. He had made the example before that you can set up your hazards to come on when you reach a certain speed. I can only assume that you might be able to do the same for other conditions (high temp, etc.).

When it comes down to it, engine damage from a catastrophic coolant system failure (AST, hose, radiator) can only be prevented by shutting down the engine in time. If your coolant system is 100% and you are overheating, there are other issues that need to be addressed.

 

When I ordered my AEM EMS Red-Rx7 said this feature would allow you to program the ECU to do what I said. If coolant temps get to a certain level then you can cut the max rpms or boost or just about anything. He mentioned he blew an engine because he was racing and the coolant temp gauge stuck at 200 degrees when the car was actually overheating.

Ken

 

Well the easiest way to do it is by taking the coolant map and give them 100% enrichment at the temperature you desire like after 210giveit all the way up. This makes the engine run rich, flood and shut off.

You can also take at the same time the air and coolant ignition maps and make them 100% retard to make the engine stall at the desire temperature.

C

 

kOOL

 

I don't think it would be incredibly hard for them to program a SAFE algorithm into it, to make it do that.. It's a 68HC11 processor, and on the output, they could just have another CMP (compare) statement and see if the Coolant temp is too high, then adjust the settings accordingly.