3b s2 coupe resurrection

[Error404]

Hmm, Clifford though, anything is possible! See if you can trace the immobiliser circuits up to the fuse board and see if there is one to 87a.
if so check there is continuity across the immobiliser loop

[newsh]

I've had a car not start when the alarm failed on one pin, it was the pin that was supposed to pass power to the fuel pump.

[andy10v]

Awesome, this is going to be fun.

Thank you for the help and patience guys!

[andy10v]

IT LIVES!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Swapped the eproms into an ECU Newsh lent me, ran output test, injectors all clicked.

Turned the key and she fired right up!

Thank you (everybody) very much for your help, and patience.

[martinws]

TEEEEEERRRRRBBBOOOOOO TIME!!!!

Well done man, so lucky you had spare chips or that could have taken a while!

[andy10v]

Yeah, I was pretty excited, bouncing about the garage!

So fitted the exhaust which went smoothly.

Filled with water to run up to temperature, idles ok, clattery tappet, but I hope that will clear once it has been run up to temp/revved slightly. Plugged a massive vacuum leak in the intake manifold (large vacuum take off under the 3 small ones at the back of the intake manifold?)

Revved it as it was warming up and water pissed out somewhere.

So switched off for the night.

Water pump is leaking



Something is leaking



Something else is leaking



So glad I used water first

Front end will come off to replace the water pump seal, and hopefully see the rest of the leaks.

[newsh]

[newsh]

So what was bad in the end? The chipset or the ECU?

[andy10v]

I swapped the chipset into your ecu and she fired right up. I dont know if I fried the other ecu when poking about in the fusebox.

I had swapped the flywheel sensors as well.

So possibly the flywheel sensor was intermittent, so I got some fuel at the rail, but no start, then I shorted the ecu, then swapped the crank sensor, then swapped the ecu?

[andy10v]

Also unplugged everything in the engine bay, and plugged it back in again.

[andy10v]

The other ecu started just blowing the fuse as soon as the ignition went on, so I assume an internal short?

[newsh]

Clear as mud then

At least it's going now

[andy10v]

Yup

It would have been better to be more methodical, but I was a bit excited about getting it going

Works now, so onto the next problem.

[Error404]

Glad you got the beast fired up Andy. I had a leaky water pump too, new seal didn't seem to errr.. seal! I used some instant gasket

[newsh]

The other ecu started just blowing the fuse as soon as the ignition went on, so I assume an internal short?

Possibly a bit of wire or solder in there from when the MAP sensor was changed? Worth taking it apart and checking for debris. Look under the lower board too.