Hi Guys,

So... my 86 4runner is having cooling issues. When driving on the freeway, temperature starts to climb with the dash switch to HEAT and full hot on the temp control thing. If I move the dash switch to vent, keep the temp control thing on hot, the temp immediately drops to better than normal, cool conditions.

So far I have:

1. New radiator, hoses
2. Fixed a leaky heater hose... Now I can see no visible leaks cracks etc in any cooling hose.
3. Full flush

I've been reading up, and think it maybe the tstat? I have a friend I work with to thinks it maybe the plastic elbow thing located in the heater tube? Any ideas?

Thanks,
EtonT

 

No dice?

 

replace the thermostat. its only like 7 bucks. you may have a leak in the system? did you get all the air bubbles out when you put in the new rad?

 

Im going to try the tstat today.

thanks,
Eton

 

Get a dual stage tstat from dealer, and make sure your rad. cap is in working cond. also dealer piece.