Question about 2000 Oldsmobile Silhouette

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At high speed engine temperature is Ok, at low

At high speed engine temperature is Ok at low speed or idle it warms up to over half way and the coolant level warning light comes on. There is plenty of coolant an new water pump and a new thermostat. The pcm is also new.

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What is your fan doing? Take it out for a spin and warm everything up. Park it in the drive and look at the fan right behind your radiator. If your fan is not spinning or cycling that's your problem. If your fan is spinning then my question to you is:, "Is your van overheating? And how do you know?" The gauge can be wrongor something else. Sorry if this didn't help.

Posted on Jun 20, 2010

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SOURCE: at high speed engine temperature is Ok, at low

is cooling fan coming on?? the coolant level light pertains to a sensor that is in radiator side tank that is notorious for going bad you may have two seperate problems normal temp at high speed tells me the wind passing across radiator is keeping cool when stopped or in traffic as temp increases pcm commands fan to come on if it does,nt you will heat up

Posted on Mar 19, 2010

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At high speed engine temperature is Ok, at low speed or idle it warms up to over half way and the coolant level warning light comes on. There is plenty of coolant, an new water pump and a new thermostat....


is cooling fan coming on?? the coolant level light pertains to a sensor that is in radiator side tank that is notorious for going bad you may have two seperate problems normal temp at high speed tells me the wind passing across radiator is keeping cool when stopped or in traffic as temp increases pcm commands fan to come on if it does,nt you will heat up

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The check engine light on a 2001 beetle read code PO118 engine coolant temperature circuit high input. what do i do?


16502/P0118/000280 From Ross-Tech Wiki Jump to: navigation, search Contents [hide] if (window.showTocToggle) { var tocShowText = "show"; var tocHideText = "hide"; showTocToggle(); } 16502/P0118/000280 - Engine Coolant Temperature Sensor (G62): Signal too High Possible Symptoms
  • Difficulties with starting a cold engine.
  • Starting the engine when engine is warmish or warm, idle rpm immediately is 1200 - 3000 rpm.
  • RPM at idle is irregular.
  • With all engine temperatures idle rpm will often vary between 900 - 1000 rpm.
  • With engine warm (90 °C) the engine temperature suddenly drops (70 °C) and slowly comes back to 90 °C.
  • Bad acceleration during warm-up.
  • Diesel Engines: Glow plug indicator may be on for a longer than normal time or at ambient temperatures where it shouldn't come on at all.
Possible Causes
  • The electrical signal coming from G62 is too low
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  • Engine Coolant Temperature Sensor (G62) faulty
Possible Solutions
  • Check wiring and connections
  • Check / Replace Engine Coolant Temperature Sensor (G62)
Special Notes
  • In many cars between MY 1995-2002 the G2/G62 had a bad reputation for failing often. The original G2/G62 sensor is black and the improved replacements are green.

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CODE 14
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CODE 15
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dude its normal for first start or cold start that the idle is ok but it must high than normal... its normal because the engine is warming up it self... when it gets warm, the idle speed will return normal idle... your engine is 1200cc, it has not much HP for a great load... and i know its a carburatored engine and its an old engine, your head lyt and a/c fan and aux fan and all the electrical system on your car, uses the HP of you engine and its a lot of load to the alternator driven by the engine to generate an electricity they need and thats why the engine rpm speed lowering down to dead and its shake. thats why when you use your lyts or all electrical, you engine is weakening... the best remede is adjusting you idle speed... its located behind the carburator.. its a small black knob.. just make a twist each eighter way and you'll find out if your idle rpm speed ts incresing or decresing.. just increase it and try opening your lyts and other electrical, if its still shaking then adjust it a little more

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