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Frequent flyer Gold
Posts: 108
Location: NEWPORT QLD | Hi All Thought I should write quick note about a nagging LPG starvation problem (now resolved) that went on for a few months! Problem: Occasional auto change to petrol, with beeps etc when LPG tank not anywhere near empty Solution 1 Go to authorised dealer - plug in to software check and fine tune - No issue found Solution 2 - LPG man suggested sometimes coolant temp sensor goes intermittent - change sensor - no improvememnt This turned out also to be a wrong diagnosis as once the LPG receives the 50C temp from the coolant sensor it does not check again till next engine restart Solution 3 - Change LPG pressure and temp sensor in LPG injector rail - no improvement Solution 4 - LPG man said sometimes tank solenoid intermittent - can disbale by removing coil, turn off manual valve, remove valve cover (small gas escape) remove solenoid "slug", replace cover, turn back on This at first seemed to fix - no problem for a month or so until heading SYD > ADL for Xmas problem reappeared under cruise control on hills Turned of valve and removed soenoid etc, again left slug out - OK for next tank then again same problem By now I was suspicious of the Excess Flow Limit valve in the tank, so arranged for a new one in advance for Adelaide (We arrived ther Xmas eve lunchtime) and was able to pick one up and have an empty LPG tank (Lucky to have brother in LPG components business) It seems that the small gas escape when removing solenoid slug cover allows the Xs Flow valve to reset completely, thus delaying onset of next trigger of the old oversensitve unit. Changed the valve in ADL Drove back SYD and around SYD since then (7 or 8) tanks without further problems Terry
Edited by Telpat16 18/2/2013 16:34
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Frequent flyer Gold
Posts: 1092
  
Location: An island off southern Tasmania. | well done...which LPG system do you have? |
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Frequent flyer Gold
Posts: 108
Location: NEWPORT QLD | The factory approved Sequent 56/Impco with Manchester tank BTW - sorry about the typos - how do I get back into my post to edit on this forum? |
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Frequent flyer Gold
Posts: 1092
Location: An island off southern Tasmania. | Just use the edit button mate. |
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Frequent flyer Gold
Posts: 108
Location: NEWPORT QLD |  |
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Frequent flyer Gold
Posts: 1092
Location: An island off southern Tasmania. | If you ever get stuck remeber that i have a licensed installers software kit.
Cable, dongle,software etc...you can get in and test all the injectors, set pressures etc.
i don't run LPG anymore cause I've been distracted, but will come back to it.
also have 2 full Impco systems on the shelf from wrecks.
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Frequent flyer Gold
Posts: 108
Location: NEWPORT QLD | Thanks for that - I will remember! Where are you? Last time I took it to "NewGas" at Caringbah, about 20 minutes from me. Boss there Brian Newton hooked it up and went through all the settings etc, and charged me $100 |
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Frequent flyer Gold
Posts: 1092
Location: An island off southern Tasmania. |
yeah...100 bucks here and there soon adds up...I paid 500 for the tuners kit...best thing I ever did.
I am in Victoria...long way from redfern... |
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Frequent flyer Gold
Posts: 108
Location: NEWPORT QLD | I should have also mentioned that Solution "0" was the obvious - change the filter - which clearly didn't work as I progressed through the other possibilities |
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Frequent flyer Bronze
Posts: 43
Location: NSW | Good morning all.
Not sure if this is the right place, or whether I should start a new thread (Admin please advise...happy to edit if necessary!)...
Bought myself a used dual fuel 380 LX just over 2 months ago (a rare combo indeed!), and on the night I drove it home (from Canberra back to Sydney), the Check Engine light came on, then the engine responded intermittently to throttle input, before stalling in the M5 East tunnel, and would not restart until the 3rd attempt...scary that!
Despite a new battery and terminals (same CCA as the standard car...I insisted on one with a higher CCA, but the NRMA guy refused), the problem persisted...
Took it to a LPG specialist, who could not reproduce the fault in two days of driving after cleaning the electrical contacts for the LPG computer. Drove fine with no issues for a few weeks after that, so changed it to NSW rego and paid CTP etc., thinking that was the end of it...
Then the Check Engine light issue came back...the light would turn on and off by itself every half a tank or so...then at the last fill, the pump (the same one that I have used before) did not auto-stop correctly, leading to overfilling...
By now I am more aware of my rights, and gave the dealer the option to repair, replace, or refund. Not surprisingly, the dealer took the repair option, arranging repairs with the same LPG specialist I previously visited. I am dropping the car off to him this morning. But my warning bells are now ringing, because the LPG specialist was earlier talking about the weak link in the Impco Sequent 56 system being the injectors. But when I called him last time, he no longer mentioned anything about this, but was trying to tell me that the Check Engine light was nothing to be afraid of...that (apparently) most taxis run with the Check Engine light on all the time (not that I have noticed)!
So...my dear friends, here are my questions:
A) Is it OK/normal for a dual fuel 380 with the factory Impco Sequent 56 system to randomly throw Check Engine light warning, when there are no issues with the car at all?
B) When driving down an incline, and using Sports Mode to keep the car in 4th gear + no accelerator + only braking to keep the car at an indicated speed of 60-62km/h, does your dual fuel 380's engine's revs fluctuate between 1,100rpm and 1,500rpm when running on LPG (vs steady revs at around 1,450rpm when running on petrol)?
Grateful if you can share your insight and/or experience.
Kind regards,
Jeff |
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Recent LPG Starvation Issue
