As above

Since i've got the lpg working, the car seems to be running a little hot ( around 99 degree's ) on a run.

Before it never went above 97.

Anything to do with the gas or should I be looking for something else ?
I have checked all water pipes, everything ok / no air locks 

IME LPG cars do run fractionally hotter during the summer and cooler during the winter. As long as it's stable it should be OK... Mine is getting too hot, hence the new rad

Not noticed any difference TBH.

Not going lean at any point, is it?

TheBoy wrote on 22. Aug 2011 at 22:19:


Good point 

The gas "green line" is a little low at the top end of the lpg map.
Not enough to cause the gas to cut out under full bore acceleration or anything.
I've left it because I didn't think it would cause any imediate problems. 

tigers_gonads wrote on 22. Aug 2011 at 22:24:

Lamdas showing signs of going lean, if so, you need to resolve that immediately

The lambda outputs should be solid at 0.7-1v when at wide open throttle. If they flick up and down at all, add a little more LPG at that point in the map. The engine will be open loop when accelerating hard, so no adjustment is happening as a result of the lambda output, and matching the curves in the LPG map is less important than making sure it doesn't go lean.

Having said that, idling in traffic, or cruising, it can be as lean as it likes and it won't affect the temperature of the coolant, so I would be checking that the cooling system has bled itself properly (give the top hose a good squeeze and check if doesn't burp any air out.

Perhaps give it a flush in case some crud has shifted round the system when it was worked on.

Are the fans starting as they should when sitting in traffic?

Is the temperature normal when cruising rather than in traffic or is it hot then too?

In all conditions other than a stone cold engine or flat out acceleration the lambda signals should be cycling up and down.

I don't suppose the temperature sensor wire has been knocked loose so it's not making a good connection? It's on the coolant bridge. Can't remember if that causes it to read low or high, though. Probably low, so probably not the issue.