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+--- Thread: 1.8 16v normal operating temperature (/showthread.php?tid=37269)
1.8 16v normal operating temperature - stranter - 27-02-2019
Hi,
I've just bought a 306, my first petrol Peugeot so I need some advice.
Normal driving, the temp sits about 75-80°C, when idling the temperature will creep close to but not exceed 100°C. Is this normal or is something up with the thermostat and/or the temperature sender? The manual basically says anything not in the red is fine!
It's nice to have a proper gauge for a change, one that changes instead of modern equivalents which are basically on/off lights.
Stewart
RE: 1.8 16v normal operating temperature - Mighty306 - 27-02-2019
Hi Stewart. The thermostat is meant to open at 83 degrees so normal operating temperature is 85 degrees-ish. The fans kick in on low speed at 97 degrees on a model with AC. (They'll run at high speed at 107 degrees but mine rarely gets that hot, even in the height of summer).
I am pretty sure the 1.8 has the same set up as the XSi (which is what I have). If it has AC there will 3 thermostatic switches/sensors screwed in to the thermostat housing. The blue one provides a feed to the gauge on the dash and nothing else. The green one provides a temperature reading for the ECU. The brown one is linked to the AC control unit and the fans.
It's possible for the blue sensor / dash gauge to be out while the car runs completely normally. Alternatively, the thermostat is stuck slightly open or could be opening too early. Hard to tell which without a way to check the true coolant temp.
Mine ran at a similar temp to yours (according to dash gauge). Changed the thermostat and …..no difference!! Has been like that for about 2 years now!!
RE: 1.8 16v normal operating temperature - stranter - 27-02-2019
Thanks for the reply, really useful and has set my mind to rest!
RE: 1.8 16v normal operating temperature - Joep83 - 28-02-2019
Our convertible with 1.8 16v has the same characteristics. Think it is fine and nothing to worrie about.
RE: 1.8 16v normal operating temperature - Eeyore - 28-02-2019
Hi. I had a 1.8 for ages and tracked it with jenvey throttlebodies etc. It did get hot and I had electric fans fitted that kicked in at 100. So I would agree that standard running is 75-80 and then it will slowly keep moving up when not moving until the fans kick in. Then itll just loop in getting hot, fans on etc like most cars.