Fired once and not again!!! help!!

[sideshow]

you should not have to bolt the ecu to any earth

,
make sure you have eo1 and eo2 connected to engine earth on ecu
and also e1 and if it has it e11 to engine earth too

then u need e2 which is sensor earth this wire goes from ecu to the sensor earths and does not connect to engine earth

[ralyrt]

hey sideshow
quote
using a 1zz loom on a 2zz engine with 2zz ecu is dodgey anyway hehe
good luck with it
wats wrong with using the 1zz harness???
i did it that way been runnig fine for the past 6 months

hey wild supra
if the ecu is from the uk then it has an immmobolisher
but talking to tiang he says its are 2001 us spec, so i dont know what it is, but can u give the numbers on the ecu
also try this unplug the 2zz ecu and plug in the 1zz see if it kicks over
cheers

[tiang]

It's not teh ECU. Pulled up numbers off the ECU using the OBD scanner. So it's functioning.

No fuel or spark still. Driving me nuts.

up and down the wall crazy!!

The harness should have disabled the immobiliser...i'll grab the ECU number and confirm where it's from tomorrow.

[tiang]

sideshow:

I'll have to check which cables you mean, but I'll confirm that it's as you've said as well.

[Wildsupra]

hey sideshow
quote
using a 1zz loom on a 2zz engine with 2zz ecu is dodgey anyway hehe
good luck with it
wats wrong with using the 1zz harness???
i did it that way been runnig fine for the past 6 months

hey wild supra
if the ecu is from the uk then it has an immmobolisher
but talking to tiang he says its are 2001 us spec, so i dont know what it is, but can u give the numbers on the ecu
also try this unplug the 2zz ecu and plug in the 1zz see if it kicks over
cheers

im confused tiang told me it was uk spec, just passing on info.
Tiang has the car now, so you'll need to ask him for the ecu numbers.
I tested the earth pinouts on the ecu and it had earth and did also start at that stage, if those particular points dont have earths now then that is obviously posing a problem, whether its immobiliser related or not i dont know.

Matty

[sideshow]

the immobiliser is not in the harness
its in the ecu
if the immobiliser wiring is or isnt there the ecu will still have security in it

but if it has started befoire then its prob not it

try leaving ignition on for few hours then startin engine
if it starts then it is prob the security

if it doesnt well good luck with it

the immobiliser has nothing to do with earths
all it does is cut spark and fuel or just spark or just fuel
you prob need to speak to someone very clued up in toyota to find info out like that

like is said the way u did it is the dodgey way and thats y shit happens heheheheh

but u need to find it the ecu has security before u fuck around with it even more
im learning all this security shit on new engines now so i can sort it out when i wire up conversions for down the track

and its goin to add about 500 to 600 bucks extra per conversion

[tiang]

sideshow, I'ld like to know what would you recommend to do then for this conversion?

It's a UK spec ECU, without any security on it. We've started the car, and run it a number of times. We've had issues with the wiring, but nothing that's not A) Common sense, or B) documented in other people's conversions.

So it's back to the drawing board on this one, and hopefully a powerFC this weekend.

[tiang]

...I'm looking at the powerfc to tell me if I have spark, fuel, etc. Not having played with one before, it should be able to help me troubleshoot this problem alot easier?

[sideshow]

easiest thing to do is wire up an obd2 plug to it
and find someone that will let you use his 9000 dollar scanner on it good luck hehe

or just go thru all the voltages for all the sensors
and all the dizzy pulses

i would have used the 2zz harness and mated it to the car body harness
it just makes it easier to diagnose problems

doin a job and only having 20 solder or crimp connections is much safer and reliable than having 100 solder or crimp connections which sometimes is the case when rewiring whole ecu plugs

i can sell you a tin of gas and a lighter for 10 bucks which moght fix your problem heheheeh

but at end of the day just go thru each wire and double check it
the engine should start aslong as u have dizzy injectors and coils wired ok

any other sensor doesnt really matter it should still start

if u have no spark or injection then its either security or dizzy wires or faulty ecu

if that job came to me id start by throwing out the looms and strarting fresh
sounds like a fukt up job to meee heeheheheheheheh

[JP]

seeing how you've had the car running, it would not be an immobiliser problem.

Checking if the injectors are firing is pretty easy with a test light etc, so you could do that.

Checking if the fuel pump is working is also easy, so check that too. You can check if it has spark by taking one of the coil's out of the head and attach a spark plug to it. Hold the threaded part of the plug against the alloy cam cover and get someone to crank the car, you should be able to see the spark.

Check that the engine ground is bolted securely to the block, if it's loose it wont run that well

If your fuel pump isn't working, check the circuit opening relay and fuel pump relay, you can also supply 12V direct to the pump terminals at the tank and try to listen for it running.

[Wildsupra]

seeing how you've had the car running, it would not be an immobiliser problem.

Checking if the injectors are firing is pretty easy with a test light etc, so you could do that.

Checking if the fuel pump is working is also easy, so check that too. You can check if it has spark by taking one of the coil's out of the head and attach a spark plug to it. Hold the threaded part of the plug against the alloy cam cover and get someone to crank the car, you should be able to see the spark.

Check that the engine ground is bolted securely to the block, if it's loose it wont run that well

If your fuel pump isn't working, check the circuit opening relay and fuel pump relay, you can also supply 12V direct to the pump terminals at the tank and try to listen for it running.

the fuel pump is working, i even wired it up directly when it wouldnt start, just to make sure. Its not fuel pump.
When i couldnt get it to start it had no spark, i took the coil pack out and put a plug in and there was no spark.
The coil packs had 12 volts when there was no spark, so i assume it was the ecu output not firing the coil pack. So Thats one problem.
Wot other problems may be there im not too sure, beats me why its starts and runs many times in a row then all of a sudden not a thing!?!?!?!?!

Matty

[JP]

I'd be guessing dodgey ground personally.

Check all the ECU grounds in the loom, if they're not grounded 100% then the ECU isn't able to provide the ground to fire the injectors, coils etc.

[sideshow]

another thing you can do is hire a car or find one your friends own with the same engine

remove the factory ecu and plug in your ecu in to see if yr ecu is ok

if your ecu does not have security it should start in any 2zz engine as long as it has same ecu plugs

e01 and e02 are the earths for the injectors

but get a scope and check signals in from dizzy
then pulses out for spark and injectors
dont worry bout checking them at coils or injectors for now
srtart at the ecu

[Wildsupra]

Tiang is currently driving round in a new celica with a 2zz we discussed that and he said he was going to start swapping parts.

Matty

[tiang]

easiest thing to do is wire up an obd2 plug to it
and find someone that will let you use his 9000 dollar scanner on it good luck hehe

Done that. ECU is up and running. Weird that the scanner reports TPS to be 0% even though I've got my foot down. Maybe it doesn't read it when the engine is off?

Screen shot here.
http://picasaweb.google.com.au/Tiang...59539775854802

Tiang is currently driving round in a new celica with a 2zz we discussed that and he said he was going to start swapping parts.

Already swapped the MAF Sensor. Old one running in the bro's car no worries. Piping isn't too much of an issue for idle.

I'll run through each ground and see what's up. To the wiring diagrams!!!

Matty, Maybe my car likes being next to all yours? Peer pressure could make it start. it seemed to die the further away from your front yard?