Coolant Temperature Sensor

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Coolant Temperature Sensor - 11/16/2008 3:27:23 AM    Oliver5405   Posts: 5 Joined: 10/31/2008 Status: offline I have a 1995 Honda Accord EX, 5 speed with the 4cyl VTEC engine. Can anyone tell me where the Coolant Temperature Sensor is? I think it is the one directly under the distributor, but I''m not sure. Also, can it be replaced without having to drain the coolant? Thanks Oliver Post #: 1

RE: Coolant Temperature Sensor - 11/16/2008 3:58:43 AM    TexasHonda   Posts: 1509 Joined: 2/18/2007 Status: offline On the cylinder head under the distributor. Manual says to fully warm engine, and check resistance. If more than 200-400 ohms replace sensor. Leave cooling system closed, and air pressure may hold the coolant in w/ this small hole, as long as engine is completely cool. If you''re ready to reinstall new sensor, coolant loss should be minimal. You could drain the radiator which may drain the cylinder head and prevent coolant loss while installing sensor. good luck _____________________________ See you down the ROW 1994 Accord EX (in reply to Oliver5405) Post #: 2

RE: Coolant Temperature Sensor - 11/16/2008 8:23:41 AM    Oliver5405   Posts: 5 Joined: 10/31/2008 Status: offline Thanks Texas Honda. I changed the temperature sensor but that did not fix my problem. It still hesitates,skips after 1 or 2 miles then settles down after I rev up the engine for a few seconds or so. However, I finally got it to give me a code! It is "43 Fuel Supply System defective or malfunctioning fuel supply system". Now that I have this information, any suggestions on what to look for next? Thanks Oliver (in reply to TexasHonda) Post #: 3

RE: Coolant Temperature Sensor - 11/16/2008 8:47:11 AM    TexasHonda   Posts: 1509 Joined: 2/18/2007 Status: offline Code 43 usually results from O2 Sensor fault. If it''s been a long time since O2 sensor been replaced, it may be the problem. First, pull the vacuum line to the Fuel Pressure Regulator and sniff. If you smell a strong gasoline smell, the diaphragm is ruptured allowing raw gas to be pulled into engine. If yes, this could be reason for code 43. W/O an oscilloscope or other scanner it is hard to monitor O2 sensor for faults. Most simply replace if mileage is high. good luckk _____________________________ See you down the ROW 1994 Accord EX (in reply to Oliver5405) Post #: 4

RE: Coolant Temperature Sensor - 11/16/2008 8:55:05 AM    Oliver5405   Posts: 5 Joined: 10/31/2008 Status: offline Thanks for such a quick reply. I will check the regulator as you suggested. The car has 50,100 miles on it. (My wife''s car, she doesn''t drive much, and we did buy it new) No sensors have ever been changed until I did the coolant sensor today. Where is the Oxygen sensor, and how difficult is it to get to/replace? Thanks Oliver (in reply to TexasHonda) Post #: 5

RE: Coolant Temperature Sensor - 11/16/2008 9:10:12 AM    TexasHonda   Posts: 1509 Joined: 2/18/2007 Status: offline You need a manual. Download the 94-97 Honda manual from Online Manuals, DIY forum. O2 sensor is on exhaust manifold at front of engine underhood. They can be difficult to remove. It helps to warm the engine for perhaps 2-3 minutes and spray w/ PB Blaster or other rust penetrant. A good wrench or O2 sensor socket is necessary. good luck _____________________________ See you down the ROW 1994 Accord EX (in reply to Oliver5405) Post #: 6

RE: Coolant Temperature Sensor - 11/18/2008 5:08:44 PM    JimBlake   Posts: 3272 Joined: 5/31/2006 Status: offline Did you replace the right temperature sensor? 1-wire sensor = dashboard temperature gauge sender.  Not the one you want. 2-wire sensor = measurement for fuel injection system. _____________________________ '03 Accord & '07 Civic '01 Saab 9³ & '05 9²x (in reply to TexasHonda) Post #: 7

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