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thechuckster
Forums Junkie

Location:
Brisbane
Registered:
February 2003

Re: No heat from heater.. ?

Sun, 19 December 2004 03:28

well ... sounds like you'll have to go back over all the changes you made one by one to eliminate problems (again, sorry)...

RAV-GT4 wrote on Sun, 19 December 2004 12:27

The 3S-GTE runs a MAP sensor, which is prone to it's own problems, but none were apparent when we took it for a run. The Power FC 'leaned-out' the engine (the pinging) when it got over 100°C, when we were on the M4, that's when the engine light was flashing at us.

the above quote confuses m - i would have expected the ECU to not lean out the car too much when warm? and it should have retarded timing during pinging not fuel?

from my (limited) experience, my overheating issues that i thought were from the cooling system were actually elsewhere - after my red-hot-everything-on-exhaust-side episode, we (me mostly) put it down to:
-excessively retarded timing (was still burning when the exhaust valve was opening
-poor fueling (too lean at cruise and then too rich under any power)
so the radiator was trying to extract huge amount of heat from the turbo core plus the engine was getting uber-warm. At this time i had two thermos out front, plus one behind in an attempt to push/pull massive amounts of air thru the radiator. What i should have concentrated on (at the time) was proper timing/fueling. Embarassed

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