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I bought my 90 XJS last summer and have worried to death about getting the temp guage to ready in the middle of the N or lower. I have read in other places that it should NEVER go above the N.
This will vary depending on the car. There are a few variables. Has someone replaced the temp sender, I put one in my car that read almost near the H when the car was at normal. The temperature gauge will also vary with the cars Voltage, don't know about the FL but my car has no regulator for the gauges so the temp also varies with voltage. You need to check temperature of the car at the head this can be anywhere up to 110°C
Originally Posted by dtony
I got radiator boiled and rodded, replaced the aux fan swicth with a 182 F, put 180 thermostats and put new hoses all the way around.
Good cleaning out the Radiator this is needed on ALL XJS's. Replacing the thermostats with lower temperature ones will not prevent the car from overheating.
Originally Posted by dtony
The temps looked within the safe zone and the needle was at the top of the N and a bit higher. SO, I will keep checking, but I assume I've worried or nothing about the needle.
This is normal, all new owners are paranoid about temperature it will pass.
Originally Posted by dtony
Does anyone know what the temp of the water coming out of the bottom hose should be (assuming a perfectly working radiator - which I doubt I have even after the servicing)?
Could be anywhere up to 100°C. The most important thing is not the outright temperature but that the car does not boil.
