ECU, Deceleration, and You!

[HommerSimpson]

Dan: Everything I said refers to how decel cut normally operates, not when doing the TSRM test.



Stop being an idiot. I'm not stating opinion, I'm stating facts based on factory documentation backed up by metrology. Measuring what happens under these conditions may be far beyond your abilities but it's a cake walk for me. That and I own gear that can "run" the ECU in any configuration I choose whether on or off the car. Not to mention decel fuel cut in some form has been an emissions strategy employed in just about every injected engine for the last 25 or so years. Bottom line is you ought to stfu unless you know what you're talking about. I know things about this box many here would love to learn but I hold back because of people like you.

And i think you are one of those people that think they know everything about everything.. And im quite sure you have more faults then most of us.. One including the size of your Head...
And im quit sure you have never made a mistake in your life.. and would have to jump off bridge if you did because you just could not live with your self..
Im so glad you are perfect...

PS: btw can i see some documentation of this and not just your word that the ecu turns the fuel off on deleceration...??

 

[jdub]

Hommer - it does...page 82:
Fuel injection resumes when engine speed falls below a certain RPM or the TB is opened.



JJ is just telling it like it is...sorry it doesn't jive with what you think.

 

[HommerSimpson]

Hommer - it does...page 82:
Fuel injection resumes when engine speed falls below a certain RPM or the TB is opened.

[thumb]http://img2.putfile.com/thumb/4/10419461730.jpg[/thumb]

JJ is just telling it like it is...sorry it doesn't jive with what you think.

Its not that it doesnt JIVE with me.. I have just leaned over the years that people that ACT like they know "everything" and are RUDE about the way they respond.. Usally dont know anywere as much as they claim...
If he handled himself in a more respectfull way then he would get more respect...Plus he just does not like me and has made a point to respond to every post i make...and call me names...

 

[jdub]

Hommer - In JJ's case, he has this manual and others that go into even greater detail on how the TCCS works. If JJ tells you that the ECU does this because of that, I can give you a 100% assurance that it is true. Your perception of the way others "act" concerning knowledge is in no way correct as it applies to JJ. If you had been on SM longer, you would realize that...if you think about it:

disregard what i said.. obviously i had no clue

Combined with:

beacause i did not think the fuel and spark was cut.. still dont either.. or you would have backfires out the ass

Is completely wrong...what did you expect when you flat refused to try and understand?

Here's some light reading for you to get the basics:
http://www.autoshop101.com/

 

[HommerSimpson]

Hommer - In JJ's case, he has this manual and others that go into even greater detail on how the TCCS works. If JJ tells you that the ECU does this because of that, I can give you a 100% assurance that it is true. Your perception of the way others "act" concerning knowledge is in no way correct as it applies to JJ. If you had been on SM longer, you would realize that...if you think about it:



Combined with:



Is completely wrong...what did you expect when you flat refused to try and understand?

Here's some light reading for you to get the basics:
http://www.autoshop101.com/

Look it makes no diferance.. JJ is RUDE and has a very little respect for people as he IMHO acts like hes BETTER and KNOWS more then everyone...
Im not telling anyone that he is wrong.. OBVIOUSLY he does know quite abit.. other then tire sizes...:}

 

[adicken1]

^^^ JDub, that's excellent reading, practically all inclusive. Question - do you by chance have a link to info on more performance related operation and theory. Everything from stroking to forced induction to NOS and water/meth?

Thanks -


Andrew

 

[jdub]

Look it makes no diferance.. JJ is RUDE and has a very little respect for people as he IMHO acts like hes BETTER and KNOWS more then everyone...
Im not telling anyone that he is wrong.. OBVIOUSLY he does know quite abit.. other then tire sizes...:}

Well, that's your perception...it's shared by a couple others here too. The ones that don't like it when they are bluntly told they are flat wrong. You need to understand JJ does not "candy coat" what he says. Makes me wonder who actually has the problem...a question you may want to ask yourself.

This needs to get back on topic...enough has been said. If you have a problem, PM me.


Andrew - I'll have to look. Google is your friend though

 

[HommerSimpson]

Well, that's your perception...it's shared by a couple others here too. The ones that don't like it when they are bluntly told they are flat wrong. You need to understand JJ does not "candy coat" what he says. Makes me wonder who actually has the problem...a question you may want to ask yourself.

This needs to get back on topic...enough has been said. If you have a problem, PM me.


Andrew - I'll have to look. Google is your friend though

Ok back on subject..
Does same apply for automatics ? say im doing 4k in overdrive or 4th or what ever gear and I let off the gass..
The injector pulse stops compleatly ?
Fuel pump stops running ?
No spark ?

 

[adicken1]

Look it makes no diferance.. JJ is RUDE and has a very little respect for people as he IMHO acts like hes BETTER and KNOWS more then everyone...
Im not telling anyone that he is wrong.. OBVIOUSLY he does know quite abit.. other then tire sizes...:}

Hommer, give this a try.

http://www.supramania.com/forums/showthread.php?t=20163

(JDub Edit: Like I said, enough...stay on topic)

Just my 2 cents.

- Andrew :bigthumb:

 

[jdub]

Dan has it right except ignition is not killed and the cut off and resumption speeds are not fixed. They're higher when the coolant temp is low or the AC on. Without going into detail the relevant signals used in the cut off calculation are IDL, engine speed (NE), coolant temp, AC on, and vehicle speed with IDL and NE having the highest priority.

This is correct. An automatic handles it the same way...the ECU halts fuel injecton completely. The pump continues to run...fuel is simply returned to the tank.

 

[adicken1]

Well, that's your perception...it's shared by a couple others here too. The ones that don't like it when they are bluntly told they are flat wrong. You need to understand JJ does not "candy coat" what he says. Makes me wonder who actually has the problem...a question you may want to ask yourself.

This needs to get back on topic...enough has been said. If you have a problem, PM me.


Andrew - I'll have to look. Google is your friend though

Google definately is, I was just wondering if you had anything handy. If not its no problem. A one stop shop is just always wonderful.

- Andrew :bigthumb:

 

[jetjock]

My goodness. Hommer, you're not even worth responding to other than to say this: I don't dislike you and I don't reply to every post you make. I would if I didn't like you but frankly I couldn't care less about you or what you think of me. You're just another faceless name on an Internet forum. In fact that's true of just about everyone here. I couldn't give a rat's ass about 98% of them. Honestly.

Now it's true I don't think you're very bright about this stuff and a lot of people here agree. The difference between most of them and me is I'll say it. Your problem is you seem to feel it's our fault you aren't very bright or that it's our fault for *thinking* you aren't very bright. It's not of course. It's because you've chosen to go through life thus far putting no effort into become otherwise. Considering your age there's very little excuse for that.

Finally, if you or anyone else doesn't like what I have to say they have two options 1) Put me on your ignore list (God knows how many are on mine) or 2) Take it up with the management. However, rest assured I will continue to correct your misinformation when and where I see fit.

 

[jdub]

This thread has served it's purpose.
The OP's question was answered.