Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: PhilRich on 24 May 2010, 13:49:30
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Just finished installing the LPG system to my 2.2. Everything was fine before, apart from a Low Beam Fld/Vision fault which I was going to fix in due course. When I fired up the car after the install (LPG fuse not fitted), I found the engine to be a bit 'tappety' & on brisk throttle I was getting a mild backfire/spitback through the Throttle Body? I took the car for a run & found that if I drove like 'miss daisy' she responded OK and even accellerated gently upto 60+, but if I gave it heavy throttle the car seemed to have no power & was being held back as if I had the brakes on ? I have renewed the Inlet & Throttle Body Gaskets as a matter of course, new Bosch plugs, & have checked for loose connections, air leaks etc but can't find any. I am now getting the fault codes :
P0335 - Crankshaft Sensor Incorrect Signal
(01) - Present
P1700 - SVS request via CAN
(00) - Present
These codes come back again immediately after being cleared.
I have put 5 litres of LPG into the tank & run the system to check it operates, but the AC GasSyncro software shows no injection times for cylinders 2 & 3? is this related to the problems above and does anyone have any ideas what is wrong ? :y
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Ignore the P1700, is the crankshaft sensor plugged in securely?
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1700's are often logged instead of a 340 cam sensor too iirc...
check the cam sensor wiring :y
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I would double check the injector wiring to the LPG system. It should report a duration for all 4 injectors unless the main ECU has shut them down due to a misfire. (in which case you'd have misfire codes stored).
Kevin
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I would double check the injector wiring to the LPG system. It should report a duration for all 4 injectors unless the main ECU has shut them down due to a misfire. (in which case you'd have misfire codes stored).
Kevin
easy to mix up those injector plugs :-/ ;)
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I would double check the injector wiring to the LPG system. It should report a duration for all 4 injectors unless the main ECU has shut them down due to a misfire. (in which case you'd have misfire codes stored).
Kevin
easy to mix up those injector plugs :-/ ;)
Yep, been there. It'll run OK on petrol but as soon as you try to switch over to gas the ECU blacklists a couple of cylinders that aren't firing and until you restart it runs as rough as a bear's. Don't ask me how I know. ::)
Kevin
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First things first... You did remember to connect the Main servo pipe to the manifold didn't you? Similar symptoms to those Tunnie and I experienced when I forgot it on his :-[ :-X ::)
After that... Check all your wiring thoroughly... Everything you touched first :y
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First things first... You did remember to connect the Main servo pipe to the manifold didn't you? Similar symptoms to those Tunnie and I experienced when I forgot it on his :-[ :-X ::)
After that... Check all your wiring thoroughly... Everything you touched first :y
Hiya Paul ;)
If that is the 4mm hose to the spare brass injector I tapped in just below the Throttle Body butterfly that comes from the tee between the PS-01 (map) & the Vaporiser, then Yes! ;D I have double checked all the wiring/connectors. I had however, connected the LPG Injector Rail in the wrong order!!!! :-[ ::) I've just had to call it a night as it's getting too dark too see properly (I can't see properly in bright daylight LOL ;D) but it runs on both Petrol & Gas at idle, and a quick run in the morning will tell if there is an improvement :y
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I would double check the injector wiring to the LPG system. It should report a duration for all 4 injectors unless the main ECU has shut them down due to a misfire. (in which case you'd have misfire codes stored).
Thanks Kevin, just rechecked everything & you guessed it...LPG injectors connected wrongly :-[ not had the chance to run the software again, but will try again in the morning. I will keep you posted. :y
Kevin
easy to mix up those injector plugs :-/ ;)
Yep, been there. It'll run OK on petrol but as soon as you try to switch over to gas the ECU blacklists a couple of cylinders that aren't firing and until you restart it runs as rough as a bear's. Don't ask me how I know. ::)
Kevin
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1700's are often logged instead of a 340 cam sensor too iirc...
check the cam sensor wiring :y
Thanks Jimbob :y I've checked all the wiring/plugs etc. I can't actually see the Crank Sensor for other components, but it looks a right PITA if it needs changing! ::)
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It's not my flipping day today! The Coolant Bottle sensor has thrown in the towel now :D, oh well... C'est la Vie :y
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UPDATE: Checked all wiring, all appears OK. Still getting P0335 & P1700, these return as soon as they are cleared. Checked LPG install, refitted LPG injectors correctly this time? I am numbering the engine cylinders 1-2-3-4 from the front of the engine back to the scuttle & the LPG feed lines & Injector loom are connected in the same sequence? The car starts very lumpy & then settles down to normal idle on petrol but is a bit 'rattley' & with a bit of body vibration. If I drive the car on petrol, it responds ok to minor throttle movement when actually on the move, but hesitates when pulling away from a standstill, but if I increase the throttle too much it hesitates badly and dies completely if anywhere near 4000RPM!
When I activate the AC GasSyncro software, it now tells me there is no petrol injection to CYL1 but reads the others OK. When I switch on the gas, I get the second from the bottom green fuel level light & a flashing green light below it & an audible beeping that repeats 4 times? but the software shows no changeover to gas or data for the LPG injectors?
Gas Pressure reading is: 0.61
MAP is: 0.27
Petrol Injectors read: Injector 1 : 0.0
Injectors 2 +3+4 : 3.7 to 3.8 steady
Gas Injectors all read 0.0
Temperatures : Gas = 42
Red = 36
Lambda Voltage reads: Lambda 1 = 2.49 to 2.57 fluctuating slightly either side.
Lambda 2 = 2.45 steady ( this is not wired on a four pot?)
Battery Voltage : 13.71 to 13.78 steady at idle.
RPM : Between 780 & 800 steady.
All four LPG Injectors show active green.
I am stumped! :-? Could this all be caused by a suddenly gone dead Crank Sensor?, a faulty/blocked petrol Injector?
When I had the LPG injectors wrongly fitted yesterday, the software showed no readings for Petrol Injectors 2 & 3 but it DID switch to gas at that time!!! I could plainly hear the tank solenoid click open! Any ideas fellas, before I go looking for a length of rope? ::) :y
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I assume you've now checked that all the piggyback connectors for the injectors are attached to the corresponding cylinders?
Sounds to me like the injector not getting a signal is unplugged/broken wire. I think I'd strip down and remove the LPG piggyback connectors, restoring the original car injector plugs to the right injectors and run it up.
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fully agree with LD :y
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aeye, get it right on petrol first with lpg injectors unplugged from the car loom.
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Spoke to Phil last night and gave him my thoughts on the problem... We'll have to wait for the next update now ::)
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Another interesting and informative thread 8-) 8-) :y
Hope you get it sorted out Phil :y [smiley=thumbup.gif] [smiley=thumbup.gif]
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Another interesting and informative thread 8-) 8-) :y
Hope you get it sorted out Phil :y [smiley=thumbup.gif] [smiley=thumbup.gif]
Thanks Zulu :y
And Special Thanks go to Mr. Lazydocker for going above & beyond the call of Duty :y Hopefully, I will get it fettled this long weekend when the school run & shopping duty will be suspended! ::)
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Another interesting and informative thread 8-) 8-) :y
Hope you get it sorted out Phil :y [smiley=thumbup.gif] [smiley=thumbup.gif]
Thanks Zulu :y
And Special Thanks go to Mr. Lazydocker for going above & beyond the call of Duty :y Hopefully, I will get it fettled this long weekend when the school run & shopping duty will be suspended! ::)
No skin off my nose Phil... It was just a phone call :y
I reckon it will be one of the 2 things we discussed...