Hello,

I've got a '92 1.6 running a MP45 Supercharger. It recently stopped running,after changing the spark plugs,ignition leads,ignition coil,cam angle sensor and ignitor pack it still wouldn't run on all cylinders. Checked the injector pulse and found that injectors 2 and 4 were open. Opened up the ECU and found what looked like a driver had burnt out. So i changed the jumpers so it worked on Sequential firing and also moved the wire on the ECU harness.

It now won't run at all. I've done a spark test and each plug/lead sparks. I've also swapped back the CAS,aswell as moving the CAS to see if it changes. I've swapped the Fuel Inj relay too from my daily and still no change.

All the wires on the ECU and on the Coil/CAS look good,i've also cleaned up the earth next to the CAS. I could get it running before but now it cranks but it wont fire up.

I've attached the map and a short log

Many Thanks

Chris

 

double check all the fuses, i know it sounds stupid but after changing so much then going back maybe one burned along the way?

 

I've checked the fuses in the engine bay and they are all fine.

I did a compression test before we found the fault with the ECU and it came back as 140/120/135/120.

Could the compression be that low now that it wont start?

 

Today's update....

New Spark Plugs fitted
Intercooler Pipes refitted

Tried jump starting it with a power pack and off another car and still nothing.

Also tried a stock ECU and still nothing

 

Does it get spark in output test mode? If not, it is likely to be a dead ignition module.

 

Small update...the ECU is now on its way to Reverant for him to have a look at it

 

Abit of an update

Received the ECU back with the injector driver replaced and i've reconnected the wire on the ECU loom.

Battery charged back up again and still nothing.

The car will spark in the test mode via Tuner Studio but it won't spark while cranking.

I've got a replacement engine sourced,will be getting the swapped at some point as i think the current engine is knackered anyway

 

So after almost 3 months of trying to fix the car i gave in and dropped it off to H&S Performance for them to look at it. Within 20 minutes they had it running.

Y'know how you kick yourself over something ridiculously simple/stupid? Yeah i'm doing that...alot!

Fuel lines were opposite way round on the fuel rail. The fuel pump wiring was earthing out too. So add those to the damaged injector driver on the Megasquirt and there we have it!

They're gonna do an oil and filter change and run it round the block to make sure its all ok.

Easy mistake to make,you live and learn!