XE just stops...??
We've put a 16V XE engine into a Corsa and it runs great, lovely engine.
It has Courtenay cams, Group N chip and green air filter...
But every now and then it just stops working!?
The only way to get it working again is to disconnect and reconnect the ECU, as if to reset it.
Anyone got any ideas what is going on here? We have tried it with a standard ECU, and it is a lot better... but still does it on occassion.
Could be a loose connection or a partial break in a wire that reconnects when you fiddle with it.
fuel pump relay.
when you say stops working, you mean engine dies, will turn over and over till battery is dead but wont start unless you disconnect the ecu ?
yeah, the engine will stop.. (can be a problem when going 80mph!)
then it will not start, but it will turn over as you said but just not fire... only way to get it to fire is to disconnect and reconnect the ECU.
To be fair, it could be a loose wire as MarkH mentioned, I will investigate this...
Could you explain how the fuel pump relay might cause this??
I Had a Similar Problem with my Astra.
It turned out to be the Alternator deciding to Eat a nice chunk of my Crank Sensor Wiring.
I had exactly the same problems as you're encountering.
If I jumped the car with leads this also got the motor started.
Mine turned out to be the fuel pump relay - as mentionned my oddball.
can I test the relay somehow?? I know it handles both the injectors and fuel, so it's not a normal relay. Are the relays on the different 16V engines different?? Say between Cav and Astra?
How do they normally fail?? Ours is a brand new item... so it hopefully shouldn't be knackered already...
As far as I can remember , on my astra the Fuel Pump Relay was in my footwell.
The old knackered one was grey, and apparently these were quite common failures. The new one was black I think.
I could probably find a part number tonight if you're still having trouble.
anyone got any other ideas?
otherwise I'll be buying a new relay and checking all the wires for dodgy connections etc... fun!
If you suspect the relay, next time it stops hit it with something - I used this method a few times when mine was on the way out.
i had this trouble on my old mk3 cav although that was an 8v, i couldnt work it out why it wouldnt start every now and then i even had to disconnect the immobiliser part of my alarm before finding out it was my fuel pump relay ! arrgghhh
Suspect relay, remove the relay, and put a paper clip between the live feed + the fuel pump wire in the socket. If it still does it, put the relay back in, and look somewhere else.
doesn't that relay handle the injectors as well? So you'd need more than one paper clip to test?