Subject	I think you have a cooling problem that doesn't exist.
Posted by	SirpriZ on August 26, 2019 at 3:56 PM
	This message has been viewed 224 times.
In Reply To	engine temp, ignition, IACV question posted by MJzTTZ on August 20, 2019 at 09:07 PM
Message	At 100* ambient, 204* coolant temp is reasonable. Our cars are not considered to be in a potential overheating condition until the coolant temp reaches above 221* F. If I remember correctly, the auxiliary fan kicks in at 220* F, and automatically turns on when the air conditioning is turned on. The thermostat completely opens at 194* F. I advise you to run at least 25% coolant in your cooling system. That raises the boiling point of the coolant mix, diminishes the tendency of internal passages to oxidize, and lubricates the water pump. I recently added a product made by VP Products called "Cool Down" that reduced my coolant operating temps, based on my gauge readings (it's probably a product similar to Redline Water Wetter). Our gauges are like advanced "idiot lights", meaning they are not linear in their readings, but have specific areas that indicate fairly specific coolant temps. The most important one is that of a reading above middle on the gauge (given that all your sensors are in working order) indicates an overheating situation. It's "normal" for your timing to advance with RPM, load, and various changing engine situations. I'm not familiar with your IACV issue.
Follow Ups	engine temp, ignition, IACV question - MJzTTZ 21:07:13 08/20/19 200 seems a bit high, 180 is usually as hot as - JMartz 07:17:57 08/21/19 Re: 200 seems a bit high, 180 is usually as hot as - MJzTTZ 07:37:59 08/21/19 Could be the coolant sensor is a little off? Could run - jzack 08:53:03 08/21/19 Re: Could be the coolant sensor is a little off? Could run - MJzTTZ 09:37:49 08/21/19 Got the IACV idle issue fixed. - MJzTTZ 23:19:26 08/21/19 I would replace both temp sensors to be sure - platinumist 18:05:42 08/22/19 I know there is a temp sensor on the coolant hardpipe where - MJzTTZ 19:05:39 08/22/19 There's 2 on the hardpipe. One gives a signal to the ECU. - MixManMash 23:00:11 08/22/19 Oh ok... I will change those out and see. Thanks (n/m) - MJzTTZ 23:31:26 08/22/19 I think you have a cooling problem that doesn't exist. - SirpriZ 15:56:44 08/26/19 Using my OBD2 scanner on my 1996 TT >>>>>>> - JULIAN 17:09:46 08/27/19
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