dod51e Posted September 4, 2009 Share Posted September 4, 2009 Hi Guys, I have a bit of a problem with my LPG system. On first start I have the usual lights on the LPG switch (red for petrol and flashing amber indicating that it will switch to gas when ready and the green level lights). It starts as usual on petrol but when the throttle is blipped to over 2000rpm and allowed to drop, the usual method to convert to gas all I get is the car still running on petrol, all the lights go out on the switch and the solenoids do not open! If I try to start on LPG from cold (which it will..would…do in this weather I get nothing and the lights go out. If I subsequently try to restart the engine I again get no switch lights and it only runs on petrol! The 12v+ supply is good to the Leonardo unit and the A&R amp! If I jump a 12v+ to the blue wire on the solenoids they will open and gas can be heard but the engine cuts out immediately! The car is a 1992 RRC with an engine from a 1993 (donor car did have cats but my ’92 does not; do I need to update the wiring to link in the Lambda sensor fitted for the LPG to go to the ECU?) AEB Leonardo 175 Electronic Feedback System AEB Pitagora 4cyl emulators x 2 Electronic stepper motor in gas pipe to mixer Lambda sensor in n/s exhaust OMVL R90/E vaporiser A&R ignition amp The system was running fine, if uneconomically, prior to the immobiliser burning out the other day. I have disconnected the immobiliser as it only broke the circuit in the ignition and starter wires under the steering column! Any ideas or advice welcomed with open arms!! I don’t suppose you have a pdf of the wiring for a LeonardoAEB (about 93 vintage) set up or know where I can get one? Cheers Mark Quote Link to comment Share on other sites More sharing options...
ThreeSheds Posted September 4, 2009 Share Posted September 4, 2009 Sorry I have no answer for this, but the sentence: The system was running fine, if uneconomically, prior to the immobiliser burning out the other day. does kind-of light up and flash at me Quote Link to comment Share on other sites More sharing options...
SteveRK Posted September 4, 2009 Share Posted September 4, 2009 bypassing the solenoid wiring seems to confirm that the solenoid works, but other components will likely need to be active to run on LPG so i would suspect looking further upstream - i don't know how LPG systems are controlled but if it uses some kind of ECU or control unit i would start from there and check the basics like wiring and any fuses Quote Link to comment Share on other sites More sharing options...
MikeAK Posted September 6, 2009 Share Posted September 6, 2009 Hi, User manual/wiring diagram here: http://www.aeb.it/products/feedback-systems/leonardo/at_download/productAttachment1 It looks like it's in Italian when you start reading but English section is about halfway through Hope it helps Mike Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.