LPG Conversion

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Apr 18, 2006 | 06:29 PM

djjaffa90to94

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LPG Conversion

Can anybody help me? I am the owner of a 99V audi A4. Last year I made what I thought was a good long tem investment and had an LPG conversion. The company who fitted the conversion have a very good reputation. Initially the car ran fine, but not long after and forever since, it has been missing / jerking when moderate pressure is applied to the throttle especially on inclines. The problem was never and is still not evident on petrol. I gave the car to a local leccy who diagnosed lamba sensors / crank shaft sensors / cam sensors all of which may have been red herrings. I have also had my ECU refurbed twice. Although the problem has improved since my last visit (replaced crank shaft sensor / cleaned out throttle body and 2nd new set of plugs in three months) the problem has still not been cured. Can somebody advise me on the best spark plugs (the LPG convertors advised super copper coil) to buy and how I can check my HD leads are in good order? Could it also be something to do with the throttle body or would that only affect the petrol running? It is such a shame as the car runs beautifully otherwise. I'm becoming nervous that I might soon incur the main dealers 90 pound an hour and 125 pound diagnostic wrath!!

I appreciate you don't know me from Adam but any advice would be most welcome!

Thanks for reading!!