[Ruthless]

just put the 4age in my car wired everything up and no spark computer has power injectors work starter works but the coil has no power

ive been told it could be the ignighter

anyone around brisbane northside that could lend a hand that knows what they are doing

cheers nathan

[steak_knife]

Give it ing + from some other place & see if it go's.....

Who reduced the harness???

[Ruthless]

tried that still nothing
and what do you mean about the harness

[steak_knife]

Do you have battery volt's at the ignighter plug???

[Ruthless]

yes there is 12 volts at the igniter plug on one wire im just thinking it could be a timing issue with the dizzy i just put constant 12 volts and negative on the coil pack and still no spark

[steak_knife]

Ruthless wrote:

yes there is 12 volts at the igniter plug on one wire im just thinking it could be a timing issue with the dizzy i just put constant 12 volts and negative on the coil pack and still no spark

It wont, the ecu & dizzy give it it's neg pulse, the body of the coil does need an earth ( that go's for coil pack's to) but the neg of a coil is the trigger.
put a test light from + to - on the coil & crank, if it flash's, look at timing...

If you get to stuck I may be able to come up monday arvo...

[Ruthless]

i just conected one more wire to the computer and it just fired about 3 times and nothing but i think its flooded and the batterys flat i have something to work with now ill let you know how it goes thanks

[Ruthless]

here you go streaky it sparks sometimes but not all the time and even when it fires the light i put on the coil pack doesnt light up im starting to think its not getting enough power to it

[ZookFan]

Bugger! ssounds like a pain tin the arse mate! , hope you get it sorted soon!

[Ruthless]

yea i kno its almost time to burn it and start over

[Teracis]

Ruthless wrote:

yea i kno its almost time to burn it and start over

But surely it would be easier to fix as is than it is to fly shep to Brisbane?

[Ruthless]

all the welding is done unfortunetly
and brisbane turbo and tuning recon its a wiring issue but they wont say where and i think they know exactly what it is they want me to get it towed to them and they'll get it going but thats going to cost a mint when all i was going to do is to get them to tune it when its running

[swifty_ano]

When you say it sometimes has spark and sometimes it doesn't. Is there a pattern? I.e when its cold it has spark but when its warmer it doesn't?? (Does it lose spark after a couple cranks)

[Ruthless]

no completly ramdom and it hasnt run yet only just put it in and had a few fires and this is the first time the motor has run in 8-10 years but i just rebuilt it

[Rusho]

Time for you to give up


































....and sell it to me

[Ruthless]

i wish 2stroker would get back to me and say he got that special 4age to sierra instuction manual he was talking about it would really help

[11_evl]

location??

[Ruthless]

albany creek

[Ruthless]

ive just tested all the imputs and outputs on the ecu and i have 12 volts going in and only 1.3 volts coming out and there should be 12 by the book so im starting to think the ecu is ratshit but i need to try to get another standard ecu just to see if im right

all the power going into it is right but whats coming out isnt the fuel drum sitting next to the car and the lighter is lookiing better and better

[steak_knife]

Ruthless wrote:

ive just tested all the imputs and outputs on the ecu and i have 12 volts going in and only 1.3 volts coming out and there should be 12 by the book so im starting to think the ecu is ratshit but i need to try to get another standard ecu just to see if im right

all the power going into it is right but whats coming out isnt the fuel drum sitting next to the car and the lighter is lookiing better and better

Just for shit's & tickle's. earth the body of the ecu...

[Ruthless]

ok ill give that a try

a new ecu is $1400 i can buy 2 suzukis for that

[Ruthless]

nope didnt work any more ideas ???

[harvs]

It's a shame about the distance, otherwise I'd be around with an occiloscope.

So you've got fuel, that pretty much rules out the crank angle sensing (whatever it is on that engine.)

If not overly familiar with the 4AGE setup, and aparently it changed a couple of times over the years. But if you've got a ignitor, have you been able to try another one? Typically, the ECU wont fail, because that's not under any electrical stress, the ignitor on the other hand are the stressed components in the ignition system. That's why they made them easy to replace.

I'm guessing it's a version with coil packs? That pretty much rules out the coils being bad, because typically they fail on an individual cylinder rather than all together.

Really you want an occiliscope to probe around and find out what's happening. Without one it's just a bunch of guessing...

[neofitou]

Rent a car with the same engine in it and borrow the ECU.

I've had ECUs repaired before, might be a good option.
Carb-N-Ject in Underwood test and repair them in Brizzy.

[steak_knife]

double check your ecu earth's, I think there is 3 that are meant to go to the intake manifold, they HAVE to be there & with good connection....

[2stroker]

Mate I can't get that diagram he is away, why do t you borrow an igniter and ecu from max, he is just around the corner

[Ruthless]

thanks everyone i found out what was wrong apparently these older computers if they loose power for a long time they loose all ther memory and dont know whether they are a 4age or a suzuki 1.3 and i dont have a toyota computer to upload the memory

but they guy also said they are self tought and if i keep persisting it will find out what it is

so i left it on charge overnight and came back and kept trying and it eventually got better and better and now its working fine you hit the key and it goes

im just glad nothing was wrong and its all sorted thanks everyone




and it goes real hard

[Teracis]

Nice work!

[jimbo_jones]

wow thats good to know

[neofitou]

Yes, very usefull information.