Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: JamesV6CDX on 23 December 2007, 16:10:47
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I'm not sure if this gives any indication of what my idle problem could be.
Today I cleared out the codes with Kevin's cheapo Tech2. Ran the engine on PETROL only, and checked again.
Fault code 57 (Idle air control voltage low) keeps reappearing. I tried a few times. Sometimes it only appears on the laptop with the engine running. I have already changed the ICV with no joy.
Any ideas please? :)
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Problem with air RAMS :-?
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problem is, this will effect LPG idle much worser
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I've checked v thoroughly for air leaks etc - there are none.
Multirams would effect performance, but I'm not sure about idle?
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I have also problem with idle for long and its intermittent..Changed everything (also new ICV ) except MAF, Air Temp sensor and Multirams..
I give order for a new MAF and Air temp sensor ..Will come within 10 days..I will report the result here..
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Have you tried following the diagnostic in that program that no one has, it could help :y
Click on the C-30 it will take you thro checking procedure :y
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Have you tried following the diagnostic in that program that no one has, it could help :y
Click on the C-30 it will take you thro checking procedure :y
Oooooo I will look at that tomorrow.
I'm using Mr DTM's re-programmed software , it's Very good ::) :-X
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Have you tried following the diagnostic in that program that no one has, it could help :y
Click on the C-30 it will take you thro checking procedure :y
Oooooo I will look at that tomorrow.
I'm using Mr DTM's re-programmed software , it's Very good ::) :-X
Mine didnt appear :(
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The code is pointing at the icv....
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...or the wiring to it. Possibly an intermittent short to another wire?
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...or the wiring to it. Possibly an intermittent short to another wire?
Given that I've changed the ICV for a known good from another car, I guess wiring is likely to be suspect also.
Anyone know what pins on the ECU I should continuity test to?
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...or the wiring to it. Possibly an intermittent short to another wire?
Given that I've changed the ICV for a known good from another car, I guess wiring is likely to be suspect also.
Anyone know what pins on the ECU I should continuity test to?
Check Haynes - the wiring diag will cover your engine loom
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...or the wiring to it. Possibly an intermittent short to another wire?
Given that I've changed the ICV for a known good from another car, I guess wiring is likely to be suspect also.
Anyone know what pins on the ECU I should continuity test to?
Check Haynes - the wiring diag will cover your engine loom
Electronics not my strong point, but I'll have a look. Cheers TB :)
Interestinly, it's begaving fine since I put half a tank in from another garage. Makes me wonder.. ::)
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Ultimately, I think I may need to speak nicely to someone with a real Tech2 and go for a live data run ;)
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Really fed up now. This morning it was almost perfect on changeover to gas - and then with no warning at all it cut out on me when dipping the clutch, approaching a roundabout.
It's one of those annoying faults - I wish I could get to the bottom of it
:'(
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I can't really help mate as i don't know much about gas really other than it's cheaper then petrol lol...
Is it possible to get contaminated gas like u can with other fuels eg. water in diesel or water in petrol will make a car stop maybe theres a iffy bit of gas in your tank, cant u drain it :o and refil with new gas or is that attempting fate... ::)
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Have you connected a vac gauge up to test for vac leaks.....
also, trace the ICV wies through the loom to the ECU checking for breaks.
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Have you connected a vac gauge up to test for vac leaks.....
also, trace the ICV wies through the loom to the ECU checking for breaks.
Not yet mark, where would one buy a Vac gauge on Christmas eve? ::)
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is there any link for this kind of vacuum gauges ..Or all can do the same ?
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Have you connected a vac gauge up to test for vac leaks.....
also, trace the ICV wies through the loom to the ECU checking for breaks.
Not yet mark, where would one buy a Vac gauge on Christmas eve? ::)
You've got one built into your LPG system :y
It was showing about 0.3 bar absolute fully warmed up when we set it up, IIRC.
The code seems to point to a dodgy ICV circuit, which would certainly explain the symptoms.
Kevin
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You could always rip out the fart juice system and run it on proper fuel....
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You could always rip out the fart juice system and run it on proper fuel....
Shaddap you :P
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A typical good engine vaccum should be 20 Ins Hg......which is about -700mB...........
And a vaccum gauge should be available from any good car shop.....i.e. the Gunsons Lo-Gauge.
Its also possibly one of my most used diag tools as it gives a good quick relaible indication of the engine condition.....and helps to diag faults in the vac accuated components to.
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A typical good engine vaccum should be 20 Ins Hg......which is about -700mB...........
That ties in with what the LPG system was reading when it was working OK. 300mb absolute = 700mb of vacuum. So, has it changed (when hot - it won't be asm much when cold)?
Kevin
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Its likely to be slightly more (or vice versa if working off absolute) when warm than when cold as engine vaccum should be better.