LPG Discussion Forum

I have had my Toyota Previa 2001 converted to LPG and I am really pleased with the performance and the smooth change from LPG to petrol and back again etc. The tank, which is where the spare wheel was, is large enough to give me 210 miles approx. and I have started making savings on fuel. I'm getting better at finding autogas suppliers and have started to plan my journeys better. So everything is Ok and I reckon it was a good decision to make.

However I have one problem and that is the engine management light, which is continually on. I have no technical knowledge at all! Could somebody advise as to how serious this is. I have taken the car back to the garage twice and it is due back again next week. This may well sort it out but following their last two attempts the light came back on the following day and I'm not so confident that this may be the case again. The garage is fine but I can't keep taking the car back. Toyota are not interested.

Any thoughts would be much appreciated.

You need to get the codes read to see why the EML is on.

If you reset it by disconnecting the battery for 10 mins does it come back on if you run on petrol only? (Make sure you know any radio codes)

Could be anything and may not be related to the conversion, but my money is on the conversion causing it. No conversion should cause the EML to come on if it is installed and setup correctly.

Take it back a 3rd time and give them a final chance. If they still don't cure it then put it all in writing to them and insist that they rectify the fault.

What system is it and who did the conversion?

Andy

In theory the conversion should not put the eml light on but in practice they often do. I bet more than half the cars converted are running around with the check engine light on.

Ask the converter why the lights on and what the code reader actually says is the fault.

If it's a lambda probe related fault to do with being too rich or too lean then it's probably the conversion that's caused the problem.

If they can't get the light to stay off perhaps consider a mutually agreeable amount of compensation. ££££ The LPGA are useless on issues like this and taking legal action will be time consuming, expensive and probably fruitless.

If the car is running ok then thats good-most likely the conversion will have upset the fuel trims slightly causing it to come on-get it on a MOT CO analyser to see if the emissions are ok also a wideband lambda can be used with AFR guage but this will cost a bit to put on.Depends if you can live with the problem-also get the codes read to ascertain whats making it come on