Low enginetemp

[Lotus]

Hi, again!

Have a problem with my Bronco. Coolingtemp goes up to about the "N" in NORMAL, but then it falls down and stays like the tempgauge in the picture.



Random picture!

It won't get warm inside as well.

The only time it got nice and warm was up a steephill driving very, very slow.

I have changed: The termostate and the temp sensor. I have even blocked half of the radiator so it won't get so mutch air.

Please help. The winter is coming in Norway.. /emoticons/[email protected] 2x" width="20" height="20" />

 

[Seabronc]

Have you checked that you are getting flow through the heater coil. Possibly an air lock in the coil or clogged heater coil, (sometimes reversing the hoses to the coil will clear clogs). Flushing the system and putting in a 195 thermostat might be in order. The thermostat might not be functioning properly, possibly stuck open.

Good luck,

 

[Bully Bob]

Like Seabronc says.., you may have a blocked heater core, plugged hose, non-functioning on/off heat valve.

But., sounds like there's a ghost issue as well. (have not heard of an eng. runn'n to cold) (if that's the case, we need to market that..!! :lol: )

You may simply have a faulty/low reading gauge or bad sender, (don't buy China senders) in addition to the core issue.

Short the temp sender wire to ground temporarily & see if gauge needle goes up to hot.

 

[miesk5]

yo,

I'm with the guys on this; FEEL heater water hoses. If the heater water hoses are too hot to hold, the thermostat is OK. If the heater water hoses do not get too hot to hold, REPLACE the thermostat. If only one heater water hose gets hot while the other remains cool, a plugged heater water hose or heater core is indicated

Check to ensure the engine coolant is at the proper level, then start the engine and let it run until it is warmed to operating temperature. Turn on the heater and feel the inlet and outlet heater water hoses (18472) to the heater core (18476). If the inlet heater water hose is hot and outlet heater water hose is cooler, the heater core may be plugged.

NOTE: Make sure that an appropriate container is used to collect any coolant that is lost during the heater core bleed procedure.

To bleed air from heater core, remove the hose at the outlet connection of the heater core (hose leading to the water pump). Allow any trapped air to flow out. When a continuous flow of coolant is obtained, connect the hose to the core. Do not overtighten heater hose clamps.