lmsvvavr
6th November, 2015, 09:47 PM
Hi guys!
Absolutely puzzled now...
The car in question is:
Vauxhall Astra H 1.6 2004 Engine Z16XEP
The problem is:
Sometimes you turn the key on, all lights ok on the dash, turn key to crank, and you can ear the relay clicking but nothing else.
This happens after the engine is cranking and cuts suddenly before start.
After that, the only way to get it cranking again is if:
battery disconnected and reconnected,
or
Engine ecu disconnected and reconnected,
or
CIM plug disconnected and reconnected,
or
leave the car alone with ignition off and key out for about half hour.
"This happens after the engine is cranking and cuts suddenly before start." - the starter makes a funny noise when cranking,
sometimes it goes till the engine start, and sometimes it turn the engine 2 or 3 revolutions and then cuts out... after that the above happens.
When this happens, i loose communication with the engine ECU, all other ECU's are reached.
I have already:
Tried a different engine ecu - the same
different under hood ecu - the same
both ecm and under hood - the same
when the starter cut out, the battery drops to about 8 volts
tried another battery - the same
I have stripped all the engine wiring looms, nothing visible.
When the ecu comms are re-established there is codes for misfire on all 4 injectors, and few for can nodes, and can comms.
All other ecus report no com with engine ecu (obviously...)
(I will upload a screenshot of the codes...)
I am about to replace the starter motor, although not convinced that this is the problem...
Does anyone have any suggestions?
Absolutely puzzled now...
The car in question is:
Vauxhall Astra H 1.6 2004 Engine Z16XEP
The problem is:
Sometimes you turn the key on, all lights ok on the dash, turn key to crank, and you can ear the relay clicking but nothing else.
This happens after the engine is cranking and cuts suddenly before start.
After that, the only way to get it cranking again is if:
battery disconnected and reconnected,
or
Engine ecu disconnected and reconnected,
or
CIM plug disconnected and reconnected,
or
leave the car alone with ignition off and key out for about half hour.
"This happens after the engine is cranking and cuts suddenly before start." - the starter makes a funny noise when cranking,
sometimes it goes till the engine start, and sometimes it turn the engine 2 or 3 revolutions and then cuts out... after that the above happens.
When this happens, i loose communication with the engine ECU, all other ECU's are reached.
I have already:
Tried a different engine ecu - the same
different under hood ecu - the same
both ecm and under hood - the same
when the starter cut out, the battery drops to about 8 volts
tried another battery - the same
I have stripped all the engine wiring looms, nothing visible.
When the ecu comms are re-established there is codes for misfire on all 4 injectors, and few for can nodes, and can comms.
All other ecus report no com with engine ecu (obviously...)
(I will upload a screenshot of the codes...)
I am about to replace the starter motor, although not convinced that this is the problem...
Does anyone have any suggestions?