I can get hold of a MK3 Cavalier SRi with a buggered engine.
All Fuel Injection stuff is OK though.
Would it be theoretically possible to fit the Motronic Fuel injection onto my 18SE engine, replacing the Jetronic Sytem.
Obviously I would need to use:
Throttle Body
Throttle Switch
Throttle Linkage
ECU
Air Flow Meter
Maybe Crank Sensor?
Maybe Intake Manifold
Fuel Injection Rail
All Wiring Looms
Idle Control Valve
I know that this conversion has been carried out with BMW's running L3 Jetronic, so I was wondering if it would be possible with Vauxhall's.
And more to the point, would it actually be worth doing?
Any thoughts and Ideas much appreciated.
as long as the crank ring has the same amount of teeth all you need is the loom, ecu, idle control valve and airflow meter. if donor car is m1.5 then the throttle body but if ml4.1 you just use your own. the crank sensor, temp sensor, manifold and all that is the same. dunno if its worth it though.
It would be nice to have the fault code reading capabilities that the motronic ECU's have, and It would make upgrading to a 2.0 easier in the future.
Would it run OK with the 18SE engine though?
Very interested to know more about this aswell. Are you guys saying that If I wanted to convert my L3 jetronic system to motronic ML4.1 then I'd need the following from the motronic ML4.1 donor;
ISCV
ECU
full loom
and airflow meter.
Anybody know the mods needed to the fuel pump relay/wiring????
check how the motronic 2.5 system works with regard to the knock sensor. You've not listed it, so your not going to use it?
If that's the case, the motronic will just keep advancing, expecting a knock signal to get it's timing. I haven't run a M2.5 without a knock sensor. I could try my engine to see, but it may have dire concequenses.
Anyone else got info about running with no knock sensor, or can you fit it?
OK, so maybe it could be fitted then. But will the harmonics generated by knock in the 8V block be the same as that in the 16V block? As the 16V block is a lot larger and heavier, I would have expected the knocking frequency to be found at a lower frequency.
I know that BM's have done this too, however the BMW software will be different, and therefore, may account for the loss of a knock sensor. Or they have a knock sensor on their L3/Jetronic system (Which I doubt)
Actually I wasn't planning on using the Motronic 2.5, but was intending on using the Motronic ML4.1 as fitted to early (before 1990) 8V GTE's and Cav SRi's. This does not have a knock sensor.
The only major hassle is that the crank pick up rings would need to be changed to run with this system.
List of parts needed:
Throttle Body
Throttle Switch
Throttle Linkage
ECU
Air Flow Meter
Crank Sensor and Crank Sensor pick-up ring
Intake Manifold (Maybe)
Fuel Injection Rail (Maybe)
All Wiring Looms
Idle Control Valve
I know this is a really old thread, but has anyone managed this?
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