cars been down garage, and theyv had RAC diagnostic thing onit aswell.

 

the injectors are not working, not clicking, and not getting power/earth.

 

ive done a NA to TT conversion, kept the NA loom. using the TT ECU

 

 

ive changed the connections on the front 4 injectors.

 

the ECU is not showing any error codes.

 

 

the injectors were working fine before i did the swap, as the engine is from my old car, as is the ECU.

 

do i need a new loom? im about to give up on the car :(

just tried the NA ECU and still same situation.

 

plugged TT ECU in again still on code 55 (normal)

 

not firing tho :(

Do you get any noise from your fuel pump when you first turn the ignition on?

i think its your CAS ...have you tested it?

fuel pump primes, ive actually had the car started, but must have been the dreggs of fuel still in the engine.

 

 

ive checked the connections for the usual grime on the CAS and its clean.

 

and the CAS itself is on the engine which workt fine before the swap.

 

the ECU has doesnt say the error code for the CAS tho?

 

 

spark plugs are dry.

have you tried cranking over with a sparkplug out & look in the chamber to see for fuel being squirted???

if you take cas off you can turn it by hand & listen to the injectors you should hear them clicking??? check this

injectors are not clicking no.

 

its an electrical issue i think?

ah sorry, i mean they are not clicking from when u try startting,

 

not when turning manually.

I really hope you get it sorted and not give up, will be awesome to see it back on the road :)

i know :(

 

jsut to recap, the CAS and all engine bits were working fine, before the swap.

 

its gota be the loom surely? or 1 of the connections on it?

Go back and check the pins on the ptu and cas units.Clean all the terminals and try again.

In a week a might be able to get up to you, I have a spare CAS and PTU you can try. My issue was no live to the coils, different I know but I could have a poke about.

cars been down garage, and theyv had RAC diagnostic thing onit aswell.

 

the injectors are not working, not clicking, and not getting power/earth.

 

ive done a NA to TT conversion, kept the NA loom. using the TT ECU

 

 

ive changed the connections on the front 4 injectors.

 

the ECU is not showing any error codes.

 

 

the injectors were working fine before i did the swap, as the engine is from my old car, as is the ECU.

 

do i need a new loom? im about to give up on the car :(

 

Are you getting an electrical signal at the injector?????

You need to test this with a Noid light.

Connect the Noid light across the injector plug and crank engine. If you get a light flash then you are getting a signal to the injector. If not then you need to look further away from the injector back up the loom . The next item back up the line is the cas.

You need to follow problems like this in a logical and methodical manner.

But jumping from one bit to another wont get a result except by luck. Logical problem solving will always eventually arrive at the fault.

na there is no electrical signal to the injectors.

 

iv had good experienced mechanics on the scene, mate works for the RAC breakdown and put loads of tester things onit,

 

i asume theyv used that noid thing, as theyve said there is no electrical signal to the injecors.

 

 

yea im trying to think logically. i have a spare PTU ant thanks, but again logically the CAS & PTU workt fine before the swap.

 

unless the CAS connection is iffy, but ive checked it & its clean. but again logically if the connection was wrong, the ECU would pick that up and display the code?

 

thanks for your assistance on this guys, maybe one of the issues mentioned above, hope by describing the symptoms & whats been done will help you resove it

na there is no electrical signal to the injectors.

 

iv had good experienced mechanics on the scene, mate works for the RAC breakdown and put loads of tester things onit,

 

i asume theyv used that noid thing, as theyve said there is no electrical signal to the injecors.

 

 

yea im trying to think logically. i have a spare PTU ant thanks, but again logically the CAS & PTU workt fine before the swap.

 

unless the CAS connection is iffy, but ive checked it & its clean. but again logically if the connection was wrong, the ECU would pick that up and display the code?

 

thanks for your assistance on this guys, maybe one of the issues mentioned above, hope by describing the symptoms & whats been done will help you resove it

 

Well the next step if there is no signal at the injector connector is to check if there is an OUTPUT signal from the CAS. If there is then the fault lies in the wiring between the CAS and the injector plug. If there isnt an output signal from the CAS then you need to move to the INPUT side of the CAS to see if it is receiving an INPUT signal.

If its receiving an input signal then the CAS itself is faulty. If its not then the fault lies further back up the system.

im hoping there is power getting to it, and its the CAS itself thats gone.

 

if the CAS isnt receiving power that sounds like a pain in the arse :headvswal

 

how can i test if there is power getting to the CAS then? there is just 1 connector going to it on the front of the engine,

 

if i remember there are 3 or 4 pins onit?

why hasnt the ECU picked up the CAS tho?

 

if there is not signal getting to the CAS what is required to sort that?

CAS must be fine, as im getting spark.

 

 

so whats the next step?

Could be your fuel pump ECU not working. Try and borrow a replacement to test it. How long has the card been stood since it last ran.? It sounds more like fuel related problems, remove fuel pipe from filter outlet to see if any fuel comes out, it should be pressurised at least.

Test for 12 volt power on 1 side of the injectors - it should be there all the time - key on or not, it doesn't matter. If not there, that is your problem.

If it is there, check the connector on the ECU is properly seated and not broken.

As Above. Check basic power supply first to the injector plugs.

If you have spark. cas etc are working fine.

daz.

Test for 12 volt power on 1 side of the injectors - it should be there all the time - key on or not, it doesn't matter. If not there, that is your problem.

QUOTE]

 

its not there. its been tested, no power/ground at the injectors.

 

why tho? and how do i resolve?

 

 

i can try and bipass the puel pump ECU, see if that makes any difference?

 

it is a elecrical related issue,

 

the engine/injectors/cas/ptu workt fine before the swap.

 

the engine has gone inot a NA car which has been stood some time, a year or so i beleive.

This is where professional advice would come in handy, especially as the RAC man who obviously would not be totally familiar with a Zeds electrical systems, has tested most circuits. The fact you do not have power to the injectors when tested usually indicates a CAS not reading the presence of other requirements, such as power and fuel and is therefore not firing the injectors. Sadly it appears that in the 3 days you have had this problem, no one has been on to provide experienced assistance. At least you can read how a CAS works now though.

This is where professional advice would come in handy, especially as the RAC man who obviously would not be totally familiar with a Zeds electrical systems, has tested most circuits. The fact you do not have power to the injectors when tested usually indicates a CAS not reading the presence of other requirements, such as power and fuel and is therefore not firing the injectors. Sadly it appears that in the 3 days you have had this problem, no one has been on to provide experienced assistance. At least you can read how a CAS works now though.

 

that just sounds asif there is no hope of fixing it :(

 

garage & RAC have told me whats wrong, but the CAS works as its sparking? unless its only half working.

 

im relying on this forum, wait a few more days, then gonna have to think about breaking the car. dont wana spend hundreds of pounds on a loom, if more dead money.

 

truely gutted, ive spent hundreds going the conversion, wish just broke the old car now :(

With no 12v power at the injectors any neg signals from the ecu are not going to work, so we need to find where the power supply has failed, this is a battery feed supply and is live all the time so a single fail point is causing all of the injectors to not work.

 

Fuses are located in the supply and these would be the next thing to check, if the fuse is ok then the fuse input supply requires tracing etc.

 

You could always run a tempory feed to one of the injectors and it will automatically link to the other 5, be careful to not mix the 12v + and earth as the ecu will not like that!

 

Seriously I think you have just a niggly issue that has you all frustrated and sometimes its best to take a chill and start at the begining, it will be worth it in the end.

 

Jeff TT