Sohc Driver

What's up guys. I was at an Asian lunar moon festival with some cousins and friends tonight, and I guess it would be safe to also call it the GOVG (Gathering of Viet Gangstas) To make the story short, I unplugged my ecu as a safety measure incase anybody tried to steal my car (Because it has happened to other people before). What I found really wierd was that I was still able to start my car after the ECU being completely unplugged. I am totally confused on how this is possible. Anyone have any ideas?

Here's a rundown of what I have that I think could be related:

P75 ECU
Hondata s200b
Greddy Turbo Timer


Thanks in advance,
Khoi

Arturbo

And it idled?

mrbsponge

seen this before

mrx

i think it is possible to switch on the starter motor... but i don't think the car can start and idle or even run... because injectors are not opened and igniton is not controlled... without this... i think its impossible for an engine to run without the starter motor

BoOsTiN Dc2

you unplugged the ecu and not the s200 blue box right?

Sohc Driver

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sfwd dc2 &raquo;</TD></TR><TR><TD CLASS="quote">you unplugged the ecu and not the s200 blue box right?</TD></TR></TABLE>

Yes, I unplugged the ECU.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Arturbo &raquo;</TD></TR><TR><TD CLASS="quote">And it idled?</TD></TR></TABLE>

Yeah.kinda wierd...I let it idle for about 2 seconds. The fuelpump even primed itself with the ECU unplugged.

beerbongskickass

I believe it. Something weird happend to me not too long ago as well, but nobody believes me. I had a bet with my friend that if I put a bunch of food in my *** that it would come out my mouth. So about 3 weeks ago I put a bunch of pizza up my *** and sure enough I **** it out my mouth. It was the weirdest thing.

EK FLY

I think u need to stop going to those gang gathering bc they are really screwing u up

MR.M

There is a gost in your car.....BOOOOHAAAHAAAA...

hondaguyef

That's some mysterious ****.

dornon13

i did it too.

Sohc Driver

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by beerbongskickass &raquo;</TD></TR><TR><TD CLASS="quote">I believe it. Something weird happend to me not too long ago as well, but nobody believes me. I had a bet with my friend that if I put a bunch of food in my *** that it would come out my mouth. So about 3 weeks ago I put a bunch of pizza up my *** and sure enough I **** it out my mouth. It was the weirdest thing.</TD></TR></TABLE>

Coming from you, I'd believe it, because a lot of **** always comes out of your mouth


Khoi

beerbongskickass

Damn... I walked into that one lol.

SOHC_MShue

that is totally normal. With the ecu unplugged the car will run in limp mode and have a high *** idle and drive like ****.

Sohc Driver

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by beerbongskickass &raquo;</TD></TR><TR><TD CLASS="quote">Damn... I walked into that one lol.</TD></TR></TABLE>

Hehe..just ******* with you man

ScottEK

One time when I was tuning I threw in a chip backwards which is about as good as having no chip at all and my car started and idled like ****. Either way when you turn the key your starter is going to get power and it's still just an engine, you might not be getting perfect fuel and spark but it's still there.

Sohc Driver

So basically pulling the ECU is worthless, the damn VGs could have still stole my car if they wanted to..Good to know

LOL,
Khoi

ScottEK

I doubt it would run very long and lack of a working ECU getting signal from a TPS would make it pretty much non-drivable.

11seclude

I think if you plug out the ecu the car would not start! think about it,The ecu is the brain of the car without that nothing would work. just like your home computer. without the CPU nothig works.

0project dc2

iTrader: (1)

are you sure youd dint unplug your hondata box ?

without the ecu the injectors woudlnt prime

you put a chip in backwards it wont read the chip but itl still have a program and the ecuw ill still prime the pump and fire the injectosr . jsut in a real shitty manner.

maybe you still had gas in the combusion chamber and it ignited that.

by unplugging the hondata blue box. the ecu still reads the program. however its limited to 3000 RPM rev limit.

Sohc Driver

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by project dc2 &raquo;</TD></TR><TR><TD CLASS="quote"> are you sure youd dint unplug your hondata box ?

without the ecu the injectors woudlnt prime

you put a chip in backwards it wont read the chip but itl still have a program and the ecuw ill still prime the pump and fire the injectosr . jsut in a real shitty manner.

maybe you still had gas in the combusion chamber and it ignited that.

by unplugging the hondata blue box. the ecu still reads the program. however its limited to 3000 RPM rev limit. </TD></TR></TABLE>

Positive..I unplugged my Boomslang OBDI conversion harness from my ECU..lol c'mon guys you don't think I am that dumb do you? Give me more credit than that please

0project dc2

iTrader: (1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Sohc Driver &raquo;</TD></TR><TR><TD CLASS="quote">

Positive..I unplugged my Boomslang OBDI conversion harness from my ECU..lol c'mon guys you don't think I am that dumb do you? Give me more credit than that please </TD></TR></TABLE>

yes .. yes i do think you're that dumb .. jk khoi aha in that case im clueless

Sohc Driver

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by project dc2 &raquo;</TD></TR><TR><TD CLASS="quote">

yes .. yes i do think you're that dumb .. jk khoi aha in that case im clueless </TD></TR></TABLE>

You almost made a tear trickle down my cheek, its a good thing you were kidding

beepy

Simple explanation. An engine only needs 3 things to work: Fuel, spark, and compression.

Honda engines, still utilizing a coil and mechanical distributor, will still work with the ECU unplugged. The ECU only controls retard. So spark will be there.

The injectors WILL NOT work without the ECU. However, contrary to popular belief, the injectors do not spray directly into the valve, and therefore there is always some fuel in the intake manifold. You said the engine only ran for a second, so this is possible. Probably ran like ****, though. It is also possible that the injectors leak slightly.

The starter motor and fuel pump are operated external to the ECU in Hondas. So no mystery there.

My car, on the other hand, would be completely dead without the ECU. Everything plugs into it. (Kia Rio)

nerdsports

ive unplugged my ECU before at an unsafe parking garage and forgot to plug it back in when i was leaving...

my car didnt start. just cranked...