Toymods Car Club Inc: Tech & Conversions => Car stays cold... (idle/temp problem)

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RAV-GT4
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I supported Toymods

Location:
Rydalmere, NSW
Registered:
May 2002

Car stays cold... (idle/temp problem)	Wed, 20 July 2005 23:36

I don't know if anyone can help me here, but my 3S-GTE isn't warming up right. - Symptoms: "Poppy" cold/startup idle (ie. not smooth) Temperature gauge needle not moving very far A'PEXi hand controller says that it's only getting as far as 46°C when warm Problem is INTERMITTENT, ie. it happens sometimes when I'm pulled up at the lights, and sometimes goes away as quickly as it came, once it corrected itself by stabbing the throttle once and then it went back to a normal idle On that last point, I was watching the hand controller, and the water temp reading jumped from 40°C to 46°C when I stabbed the throttle once, so I'm thinking it's a sensor issue (if that's possible) Boost gauge sits around 10-12in.Hg (Vac) while it's doing this, instead of the usual ~20in.Hg at warm idle. While it's doing this, it maintains a "poppy" idle RPM sit at around 700-800 instead of the usual 1000 or so RPM it has at warm idle. Remember this thing still doesn't have a thermo-switch in the system yet so the fans still run full-time, which makes the system cooler and not usually go above 60°C, except when you flogg it and then it won't move past 65°C. Other than this, the car drives normally, apart from the drop in revs between gears associated with a cold idle. - Suspect: Sensor or sender, somewhere in the cooling system (if it's possible) Loose wire, or ECU? I ask this because of the sporadic nature of this problem. I haven't considered thermostat yet because it doesn't seem to fit anywhere, but cooling system is fine other than that. If anyone can give me something to work on, or if they know what the source of this problem is (which has only happened very intermittently the last two days, and more often today), please post a reply. It doesn't seem to matter what conditions this happens in, as I gave it a 30km drive to work this morning in peak-hour traffic, including a bit of a run along the M4 as well. But I'm thinking the idle at warm, and the temperature are interrelated, but I'm not sure where. Thanks in advance. [Report message to a moderator]

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