Griff 500 overheating problem?
Discussion
Griffith 500 overheating (?) problem.
I have one of the last 100 of the griff run-out cars with 11000 miles on the clock. The temperature gauge has often been a bit erratic, showing 75 - 80 during normal running with 95 - 105 in traffic, then often not going below 85 when back on the open road. Did a 60 mile trip in Surrey mid-day yesterday with no problems, but on the return journey after 30 miles on the open road doing 75 -80 mph lots of steam from the rear of the car but the gauge showing only 80 odd degees. A check under the bonnet showed plenty of coolant droplets over the engine and under the bonnet. After cooling off for 10 minutes, a check on the coolant level showed still a couple of inches in the expansion tank. Topped up with only 1/3 pint of water and got home OK with the heater full on. Temp. gauge stayed at 80 all the way home, including in traffic. Question is, what caused the apparent 'boil up' / loss of coolant? Dodgy thermosat or header tank (Blue) cap perhaps? I have noticed small amounts of coolant under the car 10 - 20 mins after parking up, which would appear to be coming from the header tank cap area. Note that the header tank was still half full when the car had cooled off back at home, and the swirl tank full.
I have one of the last 100 of the griff run-out cars with 11000 miles on the clock. The temperature gauge has often been a bit erratic, showing 75 - 80 during normal running with 95 - 105 in traffic, then often not going below 85 when back on the open road. Did a 60 mile trip in Surrey mid-day yesterday with no problems, but on the return journey after 30 miles on the open road doing 75 -80 mph lots of steam from the rear of the car but the gauge showing only 80 odd degees. A check under the bonnet showed plenty of coolant droplets over the engine and under the bonnet. After cooling off for 10 minutes, a check on the coolant level showed still a couple of inches in the expansion tank. Topped up with only 1/3 pint of water and got home OK with the heater full on. Temp. gauge stayed at 80 all the way home, including in traffic. Question is, what caused the apparent 'boil up' / loss of coolant? Dodgy thermosat or header tank (Blue) cap perhaps? I have noticed small amounts of coolant under the car 10 - 20 mins after parking up, which would appear to be coming from the header tank cap area. Note that the header tank was still half full when the car had cooled off back at home, and the swirl tank full.
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