 |
 | Home | Contact Us | FAQ | Search & Site Map | Link to Us |
 | Sign In | Join | Other 45 Sites in Network |
Car Forum / Toyota / Toyota Trucks / March 2008engine temp over NOT
The situation: at idle, truck warms up normally, then after a fer minutes the engine temp gauge moves slowly up into the red zone, then suddenly drops back to normal, and stays there. The truck: 1985 longbed, 200K miles, 22R-E (fuel injected) engine. Maintenance so far. Cleaned radiator, replaced hoses, replaced fan clutch, replaced engine temp sensor, replaced thermostat. Coolant is at normal level, no sign of loss. Any ideas? Bad gauge? >The situation: at idle, truck warms up normally, then after a fer >minutes the engine temp gauge moves slowly up into the red zone, then [quoted text clipped - 7 lines] > >Any ideas? Sounds like the thermost (the thing that blocks waterflow until the temp gets up) is opening late. It has a little hole in it to let water flow enough so that it gets to know when the water is hot. Is that hole plugged with a flake of something? GC > The situation: at idle, truck warms up normally, then after a fer > minutes the engine temp gauge moves slowly up into the red zone, then [quoted text clipped - 7 lines] > > Any ideas? > Sounds like the thermost (the thing that blocks waterflow until the temp > gets up) is opening late. [quoted text clipped - 5 lines] > > GC That little hole is in the thermostat so that air can pass by, this prevents an air bubble from forming around the thermostat. The water gets plenty hot even without moving. >> The situation: at idle, truck warms up normally, then after a fer >> minutes the engine temp gauge moves slowly up into the red zone, then [quoted text clipped - 7 lines] >> >> Any ideas? Also, make sure the TStat isn't in backwards. GC > The situation: at idle, truck warms up normally, then after a fer > minutes the engine temp gauge moves slowly up into the red zone, then [quoted text clipped - 7 lines] > > Any ideas? > The situation: at idle, truck warms up normally, then after a fer > minutes the engine temp gauge moves slowly up into the red zone, then [quoted text clipped - 7 lines] > > Any ideas? Sounds like either a bad sending unit or thermostat. You mentioned that you replaced the "engine temp sensor". Being fuel injected, that engine has a coolant temp sensor for the ECM and a temperature gauge sending unit that operates the gauge. Are you sure you replaced the right one ? Have you checked the coolant temp with a thermometer to see if is actually getting that hot ? > The situation: at idle, truck warms up normally, then after a fer > minutes the engine temp gauge moves slowly up into the red zone, then [quoted text clipped - 7 lines] > > Any ideas? Are your heater vents wide open during this? It happen to me, but I was told it was normal. I had just finish rebuilding the timing assembly and head gasket. Try to make sure you have no bubbles in the system. |
Reply to this Message |
 Sign In
 Join
 My Latest Posts My Monitored Threads My Blog My Photo Gallery My Profile My Homepage Start New Thread Enable EMail Alerts Rate this Thread
|
©2008 Advenet LLC Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.