josh8loop
Veteran Member
- Joined
- Sep 15, 2009
- Location
- Vero Beach, Fl.
- TDI
- 2002 VW Jetta TDI Manual(performed 01M to 5-speed swap) - 183,000 miles and climbing!
Fellas,
A little update. As mentioned earler in this Thread I have recently installed a temperature probe in the coolant flow that goes to the overflow tank so I can monitor coolant temps while I don't have the Vag Com hooked up. This has provided me with some great information on the current temperature regulation status of my engine. My T-stat is a couple years old now, and seems to want to keep my engine at 184-186 Deg F in the morning, and 184-201(depending on load) in the hot florida afternoons. Vag Com was reading about 10 degrees off what my new digital temp sensor(confirmed by IR thermometer, and a calibrated analog thermometer) was reading. I had been a little skeptical of the coolant temp sensor readings, but now I have proof that it is not that accurate. The CTS is about 2 yrs old(OE replacement). It also indicated that my T-stat is indeed worn out, and leaking coolant through too early as indicated by the engine temp being so dependant on outside temperatures. I would expect that a properly functioning coolant temp regulating system would allow the engine to be relatively thermally insulated from the outside air temperature. I am really glad I have constructed and installed my digital coolant temp sensor, it has provided some really valuable info on my temp regulating status and will allow me to move forward on my "Hybrid" 205 deg F thermostat.......
Which brings me to my "Hybrid" T-stat update I went ahead and purchased yet another stock TDI T-stat so I could take some needed measurements, and repress my "Hybrid" unit. It all went well, and with my much improved tooling and skillset I was able to repress my hybrid unit. I am currently trying to figure out an easy way to install a coolant drain plug in the coolant line that goes to the engine oil cooler to allow simple, and relatively mess free draining of coolant so I can do testing of different t-stats quickly. Once I have my coolant drain figured out, I should be able to test my latest creation. Muhuuhaaahaaa
A little update. As mentioned earler in this Thread I have recently installed a temperature probe in the coolant flow that goes to the overflow tank so I can monitor coolant temps while I don't have the Vag Com hooked up. This has provided me with some great information on the current temperature regulation status of my engine. My T-stat is a couple years old now, and seems to want to keep my engine at 184-186 Deg F in the morning, and 184-201(depending on load) in the hot florida afternoons. Vag Com was reading about 10 degrees off what my new digital temp sensor(confirmed by IR thermometer, and a calibrated analog thermometer) was reading. I had been a little skeptical of the coolant temp sensor readings, but now I have proof that it is not that accurate. The CTS is about 2 yrs old(OE replacement). It also indicated that my T-stat is indeed worn out, and leaking coolant through too early as indicated by the engine temp being so dependant on outside temperatures. I would expect that a properly functioning coolant temp regulating system would allow the engine to be relatively thermally insulated from the outside air temperature. I am really glad I have constructed and installed my digital coolant temp sensor, it has provided some really valuable info on my temp regulating status and will allow me to move forward on my "Hybrid" 205 deg F thermostat.......
Which brings me to my "Hybrid" T-stat update I went ahead and purchased yet another stock TDI T-stat so I could take some needed measurements, and repress my "Hybrid" unit. It all went well, and with my much improved tooling and skillset I was able to repress my hybrid unit. I am currently trying to figure out an easy way to install a coolant drain plug in the coolant line that goes to the engine oil cooler to allow simple, and relatively mess free draining of coolant so I can do testing of different t-stats quickly. Once I have my coolant drain figured out, I should be able to test my latest creation. Muhuuhaaahaaa
Last edited: