Lexusis200UK

Hi, Thanks for the information. My engine management light is not on, I have a slight misfire when I put my foot on the accelerator and uphill. There is a slight hesitation when I put my foot on the accelerator. I have changed the plugs with no luck. Its very hard to find Used coil packs even on ebay they sell only new. Thanks in advance.

Hi guys, I've got a 2005 IS200 2.0SE and the car is misfiring, I've had the sparks changed but still no luck, my friend has a Toyota Previa 2.4 VVTI Petrol on a 02 plate, his Previa is a right off, I was wondering if It was possible to put his coil packs in my lexus? I want to avoid paying £118 to Lexus for one coil pack, I have found them a little cheaper on the net for around £58 (copy parts), my mate will give them to me for free, will they fit? I haven't taken his out yet so I don't know what they look like. If they do fit will they damage anything due to the fact is not a Lexus part but a Toyota Previa part, most of the parts on my Lexus (in engine) all have Toyota stamped on them. Im going on a bit now :shutit: Just want to know if they will fit and work and if they will do any damage? Thanks in advance for your replies and look forward to hearing from you.

Sorry to sound a little silly but not very tech minded when it comes to cars........where would the low compression creep in? where would i find the exhaust? Thanks

I remember during my early mis fire problems the gas fault reader (Prins system ) kept telling us both the cats were down and needed changing but Lexus disagreed and so I was stuck between the two, dont get yourself in this situation, run it on petrol and get the reliability back. This engine will easily cover 200 _300 K if left standard Cheers guys, I had the guy look at the coil packs today and he did a pressure test (or something like that) and he said they were all fine, what he did do was change where the the Flash lube was going, he drilled a hole in the manifold and put it direct....(well I think thats what he said) :?: its seemed to be running a little better a little more smoother, no misfire as of yet....fingers crossed. you are making me cringe !!! it sounds awful and so far from what a Lexus needs. Hi again, flash lube is designed to TRY and stop the exhaust valves burning out ( because the gas burns hotter and longer than petrol it is still burning when it passes the back of the valve/seat area ) so how can the lube entry point reduce a mis fire ? I feel some straws are being clutched by a guy in a corner. If its is like this 1st week I hate to think what you are facing in the future. Which system do you have on you Lexus?

I remember during my early mis fire problems the gas fault reader (Prins system ) kept telling us both the cats were down and needed changing but Lexus disagreed and so I was stuck between the two, dont get yourself in this situation, run it on petrol and get the reliability back. This engine will easily cover 200 _300 K if left standard Cheers guys, I had the guy look at the coil packs today and he did a pressure test (or something like that) and he said they were all fine, what he did do was change where the the Flash lube was going, he drilled a hole in the manifold and put it direct....(well I think thats what he said) :?: its seemed to be running a little better a little more smoother, no misfire as of yet....fingers crossed.

Hi, sorry I was a bit blunt last nite, it brought SO many bad memories, my 1st problem was a similar mis fire, it seems they are oh so fussy spark wise on LPG where they will run perfectly on petrol. I think a change of HT leads and coil packs eventually cured mine but the auto up shift was never as sweet on gas, I could always tell which fuel it was running on. Once the mis fire was cured (sort off) the idle went haywire, often refusing to idle and without a clutch to save it and refusal to re start was a real problem meaning I had to get out and push ! Later the engine management system would shut down with no warning (lane 4 of the M25 is hard to forget) It just got worse and worse until there was no compression in certain heat ranges so I had the head re built with hardened valve seats (yes it did have flash lube fitted ) It then managed no more than 8,000 before it all started again so I gave up. My previous Omega managed 200,000 on gas with no engine problems, plenty gas related hassle but was tolerable, The Lexus hardly managed 25,000 The GS cost me thousands more than I could have ever saved so I am sure Lexus are best left to burn the fuel they were designed for. Good luck Tony Thanks tony I stopped a taxi driver (this was before I had it converted) who was driving a Lexus IS 200 which had been gas converted, he covered 100k with no problems the car has done in total 160k and still running strong. He has a Prins system which was out of my price range.

Last commennt is spot on, get rid of LPG before it mullers your exhaust valves coz it will, I had all these problems and more with my MK 2 GS300, LPG conversion made it the world's most un reliable car and cost me a fortune in 2 engine re builds, complete nightmare. No installer should convert these engines as Lexus will tell you. did you have a flash lube system fitted??? Hi Rob, Its a OMVL system fitted with Flash Lube, I have been back to the installer today and have found out that it only misfires between 2000 rpm and 3000 rpm, the installer has run out of idea's to what it could be...the things that have been done so far are: Things that have been done so far: (1) Sparks changed to recommended LPG plugs (2) Increase gas follow in the engine (3) Diagnostic has brought up no fault on the engine (no misfires) (4) ECU of the gas system has been checked and no faults. Has anyone got any idea's I would really appreciated it. Thanks

UPDATE ON THE MISFIRE Right Birmingham Autogas installer called me today and told me to come down to see what the problem is.....he was in a good mood!!! He changed the spark plugs with the ones he recommended (0.8m) free of charge and took it for a test drive but still misfiring, he put the computer on the gas ECU and changed a few settings and we told it for another test drive but it was still misfiring, then he put the computer on again on the Gas ECU and he put a diagnostic computer on under the cars steering wheel and that didn't come up with any faults, so he did a little more adjusting and added more gas intake into the engine and we took it for another test drive but it STILL misfires!!!! His told me to drive it for the next few days and come back if it carries on....but what I don't understand how that's going to help!!! I did ask him and it say's the same think " the engine needs to get use to the gas system" I really don't know what to do now......I really need help!! Please is there someone who can help!!

Its Birmingham Autogas near Starcity they are highly recommended and Approved, unfortunately I paid by cash......probably my mistake! I've even changed where I put my gas from, I now use Shell. Just woundering if anyone who has had a Lexus IS200 converted has had any problems and if they have how did they rectify it. Thanks in advance

Thanks for the info wegiel Does anyone else have a IS200 converted and have they had the misfiring problem if so how did they resolve it cheers

Hi all, Sorry if this has been posted before I'm new to this forum and to LPG conversions, I have a Lexus IS 200SE 2.0 its on a 2005 plate (last of the old shape), I had the conversion done last week because the Lexus would drink a lot of petrol. The car misfires a lot, I was advised by the installer to put in new spark plugs so I have but there is no change, the installer in Birmingham refuses to look at the car until the car has done a 1000 miles he say the car needs to get use to the conversion...what ever that means!!! Another problem is that the Petrol gauge goes down a lot while I'm driving on gas, I know there should be a little petrol usage when I start the car and before it goes on to gas but I put 1/2 a tank of petrol before going on a motorway journey, while on the journey the petrol tank went empty while it was running on gas then all of a sudden as I got off the motorway the petrol needle shot up back to 1/2 a tank. I went back to the installer who has been no help at all and he told me that this was normal on Lexus cars where the petrol needle goes down while on gas. Does it? I need help on both these problems, the installer has been no help (he was happy and friendly while taking the money) but he doesn't want to know now. The system is a OMVR (i think...I know it begins with a O and ends with a R) The car does not misfire on petrol plus I've put new spark plugs NGK No engine management light as of yet Thank you in advance for your replies