WTB:Twin Cam ECU

[retrokev]

As the title suggests I am looking for a KNOWN good twin cam ECU. I am chasing a spark problem and it all points to the ECU but the two I have tried have not fixed the problem. But I do not have a way to prove they are working.
I if have one you know is working send me a message with what you want for it and allow for postage to Queensland.

Cheers

[shake]

Can't help with the ecu, but what's the spark problem? What are the symptoms and what have you tried?

[ernysp76]

Hi Kev,

Just try one trick first, take all the plugs out and turn the motor over a few times, this will probably fix the problem as moisture seems to accumulate in the spark plug holes in the Twin Cams causing what appears to be intermittent spark problems, also something we all noticed early on is to make sure the ECU is still properly earthed.

regards

Erny.

[retrokev]

:slap: I have to admit I have not spent a lot of time trying to find the problem. To go back to the beginning this car was running fine with the exception of a battery that kept on going flat so I had to keep taking it out and charging it. One day I was working on the car and wanted to move it and of course the battery went flat so I took it out and charged it again. It then would not start so I thought it was low on petrol and put some more in it still no go so naturally I thought I had accidently zapped the ECU which I changed and still no go so I changed the fuel pump relay and the ECU in case this had died.
What I should have done and will do at the weekend is pull the back seat out and check the fuel pump is running as you cannot hear it with the seat in it. It may also pay to change the fuel filter as this car has been sitting for a while now and was run low on petrol it may have picked up some moisture from the fuel tank. I did put some petrol in the throttle body so see if it would spark but no luck. I have not pulled the plugs out to see if there is spark but I have changed the coil.
So you can see I have still some work to do but I am looking for an easy answer and everything ready to go when I have the time to look at it.
I would like to try turning over the motor with no plugs to see what this does.

[Crazy Dave]

In case you didn't already know, the fuel pump doesn't just turn on when you turn the key on like some cars do. The engine has to be cranking.

[Bargy]

In case you didn't already know, the fuel pump doesn't just turn on when you turn the key on like some cars do. The engine has to be cranking.

Unless it has been rewired. Thanks for that Latho! :)

[retrokev]

So it seems if anyone has a spare ECU they don't want to part with it. In Case??
Oh well It is off to the wreckers if needed.
:confused: What can you buy off an Excel that you can hide an ECU in???
LOL:lmao:

[skypilot]

Hi Kev if it was me this is what I would do

1. piss off the rooted battery and get a proper one,
- clean all the terminals and check all the fuses, including the ones next to the battery and the the ones in the right drivers footwell

2. pull a plug out of the head put the lead on and crank the thing to see if you have spark.

--- if you have spark then

pull all of the pluges out and check you have compression

put all of the plugs back in and

--- make sure all of the leads are on the plugs properly

------ make sure you have the right leads on the right plugs

--------make sure trhe right leads are on the right coilpack thingy

if you have no spark then give up and take it to Tanz or a sparkie, an expert will case this problem down in 10 mins

3, if you have spark then it has to be timing, fuel or air

Air - remove the rubber airbox boot and check the throttle body.
- make sure the throttle butterfly is opening.


4. Fuel - well this is the hard one but go and buy a can of start ya bastard get someone to crank the car and spray into the throtle body (CAREFULLY)
if the car starts and runs then you have to chase the fuel system down.

I would start at the filter and work backward.

To be honest Kev i doubt it is the ECU, and it sounds like you really need to approach this a little more methodically.

alternativly take it to Tanz and pay him the $$$ and get it fixed.

We really want to see you get this car running so that Hannibal has a playmate.

from a voice of my past "the more you get frustrated you get the less enthusiasm you will have to finish the project.

take care

JJ

[anthony tanzer]

So it seems if anyone has a spare ECU they don't want to part with it. In Case??

Because throwing computers at a car won't fix the fault if it's elsewhere in the vehicle. I've seen factory trained technicians blow up computer after computer by taking this approach. If you really think it's the computer, send it over to Ross Hinze Auto Electrics (he's the local Petroject agent) he will be either able to bench test the unit there or can get it done in Brisbane probably around the $100 mark (ask for a price first, as I'm only guessing).

cheers Tanz.

[retrokev]

Thanks for the checklist Justin.
I had it in my mind but now you have it in writing for me I can print it out and work through it.
I need a bonnet catch and a bumper that is why I was off to the wreckers.
Twin cam bumpers are thin on the ground up here. Tanz found one in Yeppoon.
I have not posted but the plan with this car was to get it on the road first then modify it, but my plans have been slow due to lack of money or lack of time.
(I have a wife hassling me to paint the house but I manage to blame plumbers and solar hot water for the delays:spank:)

[retrokev]

Just for the record, it was the crank angle sensor.
It took two days and various electronic testers to find the problem.
Crank angle sensors do not send an error message to the ECU unless you wind the engine for a long time.
The car acted like it ran out of fuel.
:wtf: