Builds 78 Mustard Yellow FJ40 #Tiger40 (7 Viewers)

[mattressking]

What is overheating on the gauge mean to you? Needly pegged all the way? or 3/4? If it was fully pegged, is the overflow bottle empty or filled to the correct range when at operating temp? Aka Max/Full line.

If the heater wasn't open/on to cycle coolant completely, I'd quickly check that then when cooled down, crack the temp sensor loose and make sure there isn't any air stuck.

Lastly would be oem temp sensor for your specific year.

 

[greenEFSI]

Thanks for those part numbers, I have this job to do on my '76 one of these days, and this gives me a good start.

No problem!

You should consider doing a video of how to replace all these parts on your 40. I looked around on YT and didn't find much. The window runs are pretty straight forward, but I have no clue on how to replace the inner/outer weatherstrips.

A YouTube install video is most definitely in the works!

Thank you for posting up your list. Appreciate it!

No problem!

 

[greenEFSI]

What is overheating on the gauge mean to you? Needly pegged all the way? or 3/4? If it was fully pegged, is the overflow bottle empty or filled to the correct range when at operating temp? Aka Max/Full line.

If the heater wasn't open/on to cycle coolant completely, I'd quickly check that then when cooled down, crack the temp sensor loose and make sure there isn't any air stuck.

Lastly would be oem temp sensor for your specific year.

I just got a new oem temp sensor in with the weatherstrip. Going to install that tonight, but the main issue was a high needle reading on the cluster. That was even after I put in a new oem thermostat. It's also possible that the overlflow hose has a crack and isn't allowing the coolant to return back into the radiator. That is next on my list to change.

 

[pb4ugo]

What temp tstat did you install?

 

[mattressking]

I just got a new oem temp sensor in with the weatherstrip. Going to install that tonight, but the main issue was a high needle reading on the cluster. That was even after I put in a new oem thermostat. It's also possible that the overlflow hose has a crack and isn't allowing the coolant to return back into the radiator. That is next on my list to change.

Good to replace but unfortunately that won't resolve overheating on the gauge unfortunately, it will be a good way to gauge your system is cycling correctly though.

 

[greenEFSI]

I believe it was the temp sender causing all my “problems”. I don’t think the thermostat or fan clutch had any issues, and it was just sending a high reading.

 

[greenEFSI]

Video recap on my overheating dilemma

 

[greenEFSI]

Here’s our official photo from the San Marino Classic car show in August!