LPG Discussion Forum

I'm near certain that the injectors are negative pulse. The positive is only present with engine running. This is probably how I got the polarity crossed at first ie tried to find the positive without engine running and assumed it was the negative.
The failed relay/loss of supply to petrol injector ...

It's a used unit so I'll check the harness to see if there's any tape on it but also back at the main plug. I suppose I could swap th over and try the calibration again. I checked the polarity at the injectors and the +ve is only live with engine running, engine runs fine, does this sound correct

Checked the connections and they are correct so it looks like the ecu might be shot. Does anyone by any chance have a stag 4 eco or 4 plus ecu in the shed for sale that they know is working.

I've got two white cables that are the heater. There is also a grey cable that is down to earth on the harness side. I'll not bother connecting tha lambda.
I'll try the calibration again at the weekend seems odd that no 1 petrol injector switches off. They are all pretty constant at 3.1 ms at idle

You're absolutely right the injectors are -ve and that's how they are connected. I've checked the routing pipes and wires and all are correct. Nozzles are 2.3 mm. The pressure was around 1.2 bar. I haven't got the lambda connectied does this go to black on the O2 sensor.

Cheers

I'll check it out again tomorrow, as I said earlier the issue I seem to have is the ecu switching the petrol injector off during calibration. Any idea on issue. Should I be selecting all together for the injectors ?

They are connected with the single colour (say yellow) to the petrol injector and the yellow and black from the petrol ecu
Seems strange that the car runs on gas albeit rough with the +ve driven injectors and only acts up when trying to calibrate.

Thanks for the info, got the car switching over to gas but when I try to run the auto calibration it starts on cylinder 1 attempts to get in synch with petrol injector and then the ecu switches the no 1 petrol and gas injectors off so both show in time of 0 ms. It then moves to cylinder 3 and ...

I've got a lead with 4 adaptors each with a number 2-5 inclusive. Each adaptor has 3 cores whereas the lead on the harness has 4. Is there a common colour code for the cores out of the ecu on the interface connector. I've had a quick look and see that adaptor 7 in a multi set of 11 is the one ...

I'm in the process of swapping my ecu and wiring to a Stag 4 Eco". The wiring diagram shows a coil connection. Can anyone confirm where this connection connects on a corsa c with a 4 way col pack
Thanks

Does anyone have an interface lead for an AC Stag 4 Eco ecu.

Thanks

Do you by any chance still have the egas ecu. Do you know if the egas 8 cylinder ecu will programme as a 4 cylinder ?

John

Does anyone have any Egas 4 cylinder spare parts for sale or surplus to requirements . I am looking for an ECU to replace the faulty unit on my car.

Can anyone advise where the Lpg nozzle should be positioned on the inlet of a Vauxhall 1.2 twin port

Thanks

John

I meant the Easyjet injectors were too small, they are available in 4 sizes and I think the ones I have are the smallest.

John

I had the kit on a shelf in the garage I've got all the parts except the evaporator. The injectors are too small for the 185 bhp engine so if there is no option for the matrix 4 way maybe best to leave it on the shelf.

John

I'm looking to change my duff Egas ECU with an Autogas Italia Easyjet unit. I have downloaded the software but whe I try to open the package a message comes up saying disc key not found but there is nowhere to input a key or code ??
A couple of queries on compatibility
1. Will the Egas multi 4 way ...

I am having problems with my newly installed (old system) EGAS SLY system, I think the ECU is blown and wondered if anyone had one lying in the garage that they no longer need.
The alternative is a full rewire.
Thanks
John

Would that make any difference as the car should run on petrol until the LPG running parameters are met temperature, revs and time delay.
Do you know whether you can force to start on LPG, my other car has an AG Zenit unit and if you keep the switch pressed for a period of time the car will start ...

I think your explanation of the issue is right, as soon as I turn the ignition on I hear the LPG solenoid valves click in. As soon as I crank the engine on the key the LPG ecu loses the 12 v switch supply while cranking, as soon as I release the key the 12 v is back and switches to LPG and then cuts ...