Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: horvath2500 on 02 July 2010, 14:19:38
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help, sick omega, erratic idle sometimes stalls, increases idle on its own accord 3k rpm ish, loss of power then stalls and wont start for over 10 mins, then sometimes drives like a dream. been on various forums read threads and decided to change all items, got new idle valve, new crank sensor, new maf, new coil pack and leads, replaced all inlet gaskets and rocker covers with seals due to plug holes filling up, mechanic started it up today and car still wont tick over properly so i presume all faults still there, its showing code 31 no rpm and 15 coolant sensor voltage high, it did show more codes last week but just the above two now, i did ask mechanic to check all air pipes and breathers which i presume he has done fed up of stripping this car down as the oil cooler went the other week also. anyone help? as i dont know whats next, worst problem is i use this car as a taxi and i bought it as it done low miles and that others have these with 300k with no probs mine done 70k and at mo big pile o p**
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help, sick omega, erratic idle sometimes stalls, increases idle on its own accord 3k rpm ish, loss of power then stalls and wont start for over 10 mins, then sometimes drives like a dream. been on various forums read threads and decided to change all items, got new idle valve, new crank sensor, new maf, new coil pack and leads, replaced all inlet gaskets and rocker covers with seals due to plug holes filling up, mechanic started it up today and car still wont tick over properly so i presume all faults still there, its showing code 31 no rpm and 15 coolant sensor voltage high, it did show more codes last week but just the above two now, i did ask mechanic to check all air pipes and breathers which i presume he has done fed up of stripping this car down as the oil cooler went the other week also. anyone help? as i dont know whats next, worst problem is i use this car as a taxi and i bought it as it done low miles and that others have these with 300k with no probs mine done 70k and at mo big pile o p**
Not a good choice in my opinion, you've added loads of unknowns to the problem.
Also very expensive, why on earth did you buy a new coil pack!? Expensive and its unknown if its at fault.
31 error code is normal with engine not running, 15 is the sensor in the coolant bottle, do you get an error on the MID?
To me i sounds like a simple air-leak!
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Where are you.....I think this needs looking at
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15 is coolant temperature sensor (back of engine), not level sensor.
Can cause funny idle speeds and difficult hot starting if it's telling the ECU that the engine is much colder than it really is.
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Needs proper diagnosis, stop immediately, and heed Marks advice before going any further.
First up, post your rough location, we can guide you further from there. You'll get no better diagnostic work and advice than from the tech2 owning members on here, plus others very capable.