FordsFan
New Member
- Joined
- March 16, 2017
- Messages
- 3
- Reaction score
- 0
- City, State
- Ventura, CA
- Year, Model & Trim Level
- 1995 Explorer Eddie Bauer
Hi Folks,
My 1995 Explorer about 6 months ago began to exhibit a temperature gage fluctuation from approx. 1/4 scale to almost 3/4 scale during a 100 mile trip I was on. This was out of the blue, after about a year and many miles of rock solid reading at the normal 1/3 range. About a year earlier I replaced the water pump and thermostat with new coolant and hoses. Recently I have replaced the Tstat twice, both temp sensor switch and sending unit once. I drained and refilled the coolant once, burped the system and all of this to absolutely no avail. My heater will blast very hot as well. When the gage reaches the 3/4 level it takes 5-10 seconds to descend to the 1/4 range but in a few minutes of driving at slow to high speeds it will repeat this iteration. Engine is unfazed, runs perfectly. I'm thinking about changing the T-stat once more. Stumped! This is BTW not my first rodeo nor my first 4L Ford. I have never seen this behavior. Would appreciate some well informed insight here.
My 1995 Explorer about 6 months ago began to exhibit a temperature gage fluctuation from approx. 1/4 scale to almost 3/4 scale during a 100 mile trip I was on. This was out of the blue, after about a year and many miles of rock solid reading at the normal 1/3 range. About a year earlier I replaced the water pump and thermostat with new coolant and hoses. Recently I have replaced the Tstat twice, both temp sensor switch and sending unit once. I drained and refilled the coolant once, burped the system and all of this to absolutely no avail. My heater will blast very hot as well. When the gage reaches the 3/4 level it takes 5-10 seconds to descend to the 1/4 range but in a few minutes of driving at slow to high speeds it will repeat this iteration. Engine is unfazed, runs perfectly. I'm thinking about changing the T-stat once more. Stumped! This is BTW not my first rodeo nor my first 4L Ford. I have never seen this behavior. Would appreciate some well informed insight here.