Over Heating '87 TE
Discussion
Well, this has been a great weekend. After a bismal snowy winter in Michigan we finally reach 55F...excellent day for taking the TE out for a quick jaunt. However, I noticed after 5 miles that the temp gage was hitting 140C (that's high). Would anyone have any suggestions on how to fix this (likely causes)? The fluid level and concentration are fine...my guess is the thermostat, but I have no idea where it is or how to replace it. Any help would be greatly appreciated.
I've just given my 87 Turbo a good blast as well!
Try bleeding the radiator. Pull out the big rubber bung under the bonnet and unscrew the white rad bleed plug with the engine running. Do this when the engine is cold.
Then check that all three fans are working.
The thermostat is located just above the water pump. You will be pleased to know that this is right on the front of the engine and looks really awkward to get at.
I've not (yet) changed a thermostat on the Esprit, but I bet you £10 that it is a bitch to do.
Good Luck.
Try bleeding the radiator. Pull out the big rubber bung under the bonnet and unscrew the white rad bleed plug with the engine running. Do this when the engine is cold.
Then check that all three fans are working.
The thermostat is located just above the water pump. You will be pleased to know that this is right on the front of the engine and looks really awkward to get at.
I've not (yet) changed a thermostat on the Esprit, but I bet you £10 that it is a bitch to do.
Good Luck.
Hey Guys,
First, the 'T'stat on the 907 engine is pretty easy to change. open the heater hose coming off the block and drain sufficient fluid to drop below the 'T'stat housing level. Two bolts on the 'T'stat housing and remove, scrape the old gasket away, clean and dry, put new 'T'stat in place of old with the bleed hole lined up with the temp sending unit on the housing cover, place new gasket w/ Hylomar on the housing, replace cover and bolt back down 10-13ft.lbs. Refill and bleed coolant and you're done.
For jpolubin, my guess is that the engine is not overheating at all. Do your cooling fans come on? If the car is moving in 55°F weather, there shouldn't be any overheating in the first place. I suspect that you're no overheating, but your gauge says that it is. This is because your voltage stabilizer is shot or the ground to it is bad. To check, give the binnacle a good rap and see if the gauge doesn't settle back down, if so, it's your voltage stabilizer. A second cause could also be a loose 'v' belt which does not spin the waterpump sufficiently to generate adequate flow. You should be able to deflect the belt no more than 1/4" in both directions, if you can deflect it more, the belt is probably slipping. Hope this helps...Happy Motoring!...Jim'85TE
>> Edited by lotusguy on Monday 17th March 04:06
First, the 'T'stat on the 907 engine is pretty easy to change. open the heater hose coming off the block and drain sufficient fluid to drop below the 'T'stat housing level. Two bolts on the 'T'stat housing and remove, scrape the old gasket away, clean and dry, put new 'T'stat in place of old with the bleed hole lined up with the temp sending unit on the housing cover, place new gasket w/ Hylomar on the housing, replace cover and bolt back down 10-13ft.lbs. Refill and bleed coolant and you're done.
For jpolubin, my guess is that the engine is not overheating at all. Do your cooling fans come on? If the car is moving in 55°F weather, there shouldn't be any overheating in the first place. I suspect that you're no overheating, but your gauge says that it is. This is because your voltage stabilizer is shot or the ground to it is bad. To check, give the binnacle a good rap and see if the gauge doesn't settle back down, if so, it's your voltage stabilizer. A second cause could also be a loose 'v' belt which does not spin the waterpump sufficiently to generate adequate flow. You should be able to deflect the belt no more than 1/4" in both directions, if you can deflect it more, the belt is probably slipping. Hope this helps...Happy Motoring!...Jim'85TE
>> Edited by lotusguy on Monday 17th March 04:06
silver12r said: My 90 SE is having a similar problem. Moving is fine, but stopped the temp is off the scale. The fans aren't coming on (I can turn on the AC and the fans kick in and the temp goes down). I've recently replaced the fan relay to get the AC fans going and wonder now whether I'm looking for a different temperature sending unit or another relay.....
If your fans are not coming on, you truly will overheat. Unlike the earlier cars which have an 'Otter' (thermostatically controlled) switch which completes the cooling fans circuit, yours are driven by a sensor which feeds into the ECU. Run a Freescan and see what error messages you get. Happy Motoring! Jim'85TE
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