water approx 80 degress
You really really need to check if that is sustained while driving.
yesterday he then changed the inlet solinode valve the one that attaches to the side of the evaporator, he is now thing the vaulve was the problem of the over pressure alarm
It cannot be. Whether the valve is stuck open, stuck closed, or broken off altogether it cannot cause an over
pressure - that is entirely down to the regulator (reducer) that comes afterwards. It can only cause under pressure.
System could go overpressure if the regulator freezes for example, or debris has got in there before fitted.
Also from the pervious coversation am I correct in saying that the " Lambda too rich too long" error that I was seeing is down to the ETL being too short
No, unless you kept at full throttle for longer than the ETL was set to before. That's not normally possible, but I suppose if testing included a drag race up a mountain it could happen?
It would be possible to confuse the Prins into thinking "rich" when coasting normally (and actually "lean"), by telling it the wrong sensor type was fitted.
Else it is/was down to some setting up issue. Since lots of fiddling has been going on, there is little point worrying unless it comes back again.