Hi all,
Need some help. 2006 Treg V8, 140k miles. Love the car, but she has been "difficult". Latest issue: Driving her yesterday about 25 miles all highway, then local roads, at the very end of the trip, Overheating warning came on the LCD. Immediately pulled over Looked for steam, none, fans running, engine did not feel hot. Limped home and did some thinking and searching. I pulled the cap and put in a little less than a quart of coolant. I decided since the car did not feel hot, I would replace the Temp sensor on the back of the motor. It made sense and felt right. After replace, let the car idle in my driveway. She went right to 200 degrees and just sat there, no fans, no problem. I thought we were good. So went for a drive. She was great for about a mile. On the way back, temperature started climbing again. Got home and decided to replace the other sensor in the loser radiator hose. We drove her about 15 minutes ago, but I as anxious to get it done. So I pulled the overflow tank cap to let the pressure off, there was barely any, then put it back on to help hold the coolant in while I pulled the 2nd sensor. When I got the sensor out, the coolant was clean and cold. I knew the sensor was not the problem at that point, but replaced it anyway and went for the same ride with the same results; fine for a mile then climbs. The thing worth mentioning is, that the engine never feels hot! While the upper rad hose is hot, it's not so hot that I cannot hold it in my hand. And it does not feel like high pressure. If the motor was really 220-240 degrees, I would never be able to hold the hose with my bear hand. What do you guys think?
Thank you for your help.
Need some help. 2006 Treg V8, 140k miles. Love the car, but she has been "difficult". Latest issue: Driving her yesterday about 25 miles all highway, then local roads, at the very end of the trip, Overheating warning came on the LCD. Immediately pulled over Looked for steam, none, fans running, engine did not feel hot. Limped home and did some thinking and searching. I pulled the cap and put in a little less than a quart of coolant. I decided since the car did not feel hot, I would replace the Temp sensor on the back of the motor. It made sense and felt right. After replace, let the car idle in my driveway. She went right to 200 degrees and just sat there, no fans, no problem. I thought we were good. So went for a drive. She was great for about a mile. On the way back, temperature started climbing again. Got home and decided to replace the other sensor in the loser radiator hose. We drove her about 15 minutes ago, but I as anxious to get it done. So I pulled the overflow tank cap to let the pressure off, there was barely any, then put it back on to help hold the coolant in while I pulled the 2nd sensor. When I got the sensor out, the coolant was clean and cold. I knew the sensor was not the problem at that point, but replaced it anyway and went for the same ride with the same results; fine for a mile then climbs. The thing worth mentioning is, that the engine never feels hot! While the upper rad hose is hot, it's not so hot that I cannot hold it in my hand. And it does not feel like high pressure. If the motor was really 220-240 degrees, I would never be able to hold the hose with my bear hand. What do you guys think?
Thank you for your help.
