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Old 20th November 2020, 23:53   #1
rover_ed
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Default Engine temp and heaters

Can anyone help mg zt 1.8t takes a long time to get to temp and heaters blowing warm air until the car is reved up would this be a thermostat issue. Its fitted with the prt
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Old 21st November 2020, 00:23   #2
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Can anyone help mg zt 1.8t takes a long time to get to temp and heaters blowing warm air until the car is reved up would this be a thermostat issue. Its fitted with the prt
Fit a land rover PRT from Rimmer Bros' I tried some other 'oem' ones when I had my 1.8t, finally the PRT from Rimmers sorted out all the cooing issues.

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Old 21st November 2020, 16:26   #3
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It sounds like a dicky PRT issue. I 've seen at least one example where some rubber coating had lifted from the valve and wedged it open. In that situation, warmup is delayed and running temperature lower. You should check the running temperature using the Trip Screen Diagnostic method to see what's happening. The 1.8T normally runs around 90°C.

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Old 21st November 2020, 22:40   #4
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Got a new prt today and just as you say the old one was jammed with bits of rubber new one is fitted but havent yet tried it as it went dark so will be seeing how it goes in the morning
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Old 22nd November 2020, 10:42   #5
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Got a new prt today and just as you say the old one was jammed with bits of rubber
There's usually a reason why rubber delaminates from a thermostat. The typical cause is oil contamination. Has your engine ever suffered HGF?


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Old 22nd November 2020, 11:12   #6
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Yes previous owner engine gearbox was caked in old oil so sttripped it down cleaned it all up couple of the pipes was gone from oil contamination sorted them out and new prt with a good coolant flush will see how it goes
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Old 22nd November 2020, 15:11   #7
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What temp should the cooling fan be coming on this dont have the resistor fitted 1.8t
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Old 22nd November 2020, 15:16   #8
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104 degrees Ed.

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Old 22nd November 2020, 15:22   #9
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Thanks fans not working then
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Old 22nd November 2020, 15:26   #10
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Do you have three wires coming out of the motor casing Ed?

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