I only ask this because of the following experience:

When it first got really cold here (below 10F) I was having some starting issues on an otherwise well running modded TII. The first morning that it was that cold, when I started it the car fouled both trailing plugs, but eventually unfouled them once the car reached normal temp. This condition seemed to lessen and lessen (like a brief fouling and quickly clearing) each morning that I went out and started the car, til eventually it rarely fouled them at all. This week it has gotten even colder (below zero at night) but the car has started and ran like a champ with no fouling at all on startup, even after sitting for a day or two. All of this has been going on with normal usage and with variable amounts of fuel in the tank.

Discuss...

 

kinda sorta, but no.

 

please elaborate^ I believe in car personality as much as any other RX-7 owner, but is there any facts behind it?

 

They do not learn at all.. Not kinda sorta...

 

What about after major modifications? Do they not have to relearn over the first few initial starts to settle into the new setup?

 

If your engine is heavily modified, you shouldnt be on a stock ECU.

It doesnt LEARN AT ALL....

 

sorry he is 100% accurate!

 

Mazda's ecus of that era have fixed range parameters, quite unlike the GM ones produced during that same time frame that did learn a driver's habits.

 

You like to read words that arent there dont you

I said major modificiations, such as maybe a new turbo, or oyu have rebuilt the engine. Wouldnt the ECU still be running off old parameters the first time or 2 you start it? and therefor not run right? Or would it just be completely reset as soon as it lost power, so when it starts for the first time it right away sets its new parameters

 

I guess you missed the part where the stock ECU doesn't learn.

 

lol,
The ecu doesn't learn at all.

I would chalk your issue up to the plugs eventually burning right, an injector unclogging itself,vac leaks sealing or opening up,etc.

 

Lets attack this a different way,


If you disconnect your ECU, then put a new motor in, and then reconnect the ECU, it will NEVER know the difference because it doesnt store nor generate any adaptable mapping for different engines.

Your "old parameters" would be the same parameters the ECU had when it came from the factory because it never modifies its parameters in order to adapt to different engines.

Disconnecting power from your ECU is the same is turning the Key off. It doesnt store codes, it doesnt store maps, because its a DUMB ECU.

I cant make this any simpler.

It doesnt learn, it doesnt adapt to different motors, it doesnt store "parameters", it doesnt store error codes (unless its an S5), it doesnt make strawberry shakes, it cant do your calculus homework, etc etc.....

 

Any system that uses a AFM will "learn" to a certain extent. Although it's not really learning, it's just compensating for the extra airflow. Even with that, there's only so much it will/can do.

BTW some areas get different fuel mixtures in the winter, that help it burn better in cold weather. Or at least so I was told, could be BS too.

 

*sigh*....

Look, that ECU does not LEARN anything. Having an AFM has absolutely nothing to do with it.

When the engine is running, the ECU takes readings from various sensors and interpolates this to a point on a map that it came with from the factory. This map NEVER CHANGES, and NEVER WILL unless someone goes in there and reprograms the ECU.

 

I love how most of the multi thousand post count members cant answer a question without having a short or *sigh* UGH! SEARCH NOOB! attitude... Youve said what you have to say. Ok we know now that the ECU doesnt learn.

*EDIT* Im not tryin to be a dick J-Rat, I know youve got alot of experiance and know how going by your car. But it gets on my nerves when alot of the replies you get are 1 word answers or something that sounds like they are annoyed. well gee that helps, no wonder the post count gets above 10k

 

I replied to your post with the EXACT information you asked. It was the person afterwords that contradicted me that made me frustrated.

Not too mention the four or five people that will respond after me stating that the ECU does learn.

 

I agree 100 percent with the Mouse about series four..............but there's an exception, maybe, on the SERIES FIVE TPS and its input to the ECU..

Isn't there a NOTE in the series five about the TPS and how it's SELF LEARNING???????????? As in it does not need to be adjusted on a series five. NOTE: I don't own nor have ever touched a series five RX.

 

Actually, what it says is that the TPS will never need adjusting unless its replaced.

 

its funny it says that in the books, but the tps is just as picky in the s5 as the s4, and its harder to adjust because theres 2 of them.

 

Oh, my mistake, yeah I can understand how it gets agrivating having to repeat yourself.

 

Seeing as how you, like me, have the good series cars, Series Four, I'll give you a little slack. The manual says:

CAUTION
DO NOT ADJUST THE THROTTLE SENSORS EXCEPT WHEN INSTALLING A REPLACEMENT ASSEMBLY. THERE IS THROTTLE POSITON AUTO-ADJUST SYSTEM IN THE ENGINE CONTROL UNIT.

You lose, I win (natural course of events). humor

Key words:" AUTO-ADJUST SYSTEM IN THE ENGINE CONTROL UNIT".

 

im dying here yes about 3-4 years ago a seach noob virus ravaged the rx7club populace it has never been the same... Argh warning danger to manifold engagins self-healing mode... (post whored)

 

Personally I like to believe that post count should not be taken as an indicator of knowledge, but there are some threads that really test that belief...

And look how many times it had to be repeated and explained. It's a very simple concept. I guess no one here was reading the thread just the other day where I said exactly the same thing (twice).

And I guess bitching about the people who've posted a lot of useful info is another way to get your post count up. Would you prefer a one-word answer that's right or longer posts from people who don't really know?

That's kinda funny since our CPU only controls the horn, indicator, some warning beepers, etc. Does it learn to honk at idiot drivers for you?

 

Reply ^ And what I was trying to get out at the time was not learning, but adapting. I was using the wrong word. Which is why I asked again, to be sure of what he was saying

 

*******And look how many times it had to be repeated and explained. It's a very simple concept. I guess no one here was reading the thread just the other day where I said exactly the same thing (twice).*****************************88

If you said it TWICE then you were wrong TWICE as far as the S5 ECU goes. At least it seems that way when I read the FSM comments about the TPS. Gotcha!