1987 toyota supra heater problems

batmmannn · 06-18-2010, 08:22 PM

SUCCESS
I just drove my car for about an hour and a half with no over heat, car ran at half way or below at all times on highway and in town. I didn't want to stop driving. It had been a long time since I had driven a Supra.

The FIX
I physically opened and closed my heater valve till it loosened up and burped the system with my heater on heater valve (VSV VALVE open) then I pulled the thermostat and tested it in heated water till it fully opened up. I also broke off the dangle and drilled the hole that the dangle left to a 4mm size.

I reinstalled the stat, refilled the system and burped it again.

This morning I drove it into town and had a Blown Head Gasket Test done on it and the motor passed.

I hadn't overheated or lost fluid on my way to the garage so I decided to run it till it overheated to see if I still had a problem.

Drove it for a long time about an hour and a half in city and highway and it appears to be fixed. Evidently I don't need my electric fan on to cool the motor it is 86 and sunny today.

Special thanks to
mrnickleye for his suggestion of drilling the thermostat, That made the difference! Either the new thrmostat had been stuck or I had air pockets in the heater core still.

What it took!

Used Starter
New Air filter
New Spark Plugs and Wires
Helicoil Spark Plug hole repair Kit
Dome light repair with small screw
Fog Lights installed
Swapped Passenger seat
Running light Bulbs
New Valve Cover Gaskets
New Timing Belt
New Coolant
Fresh Gas
New front crank seal
Plenum gasket
2 new front Venturas HR II tires
2 used Eagle GT rear tires
New Horn
New Castrol GTX Oil and Bosch oil filter
New Cannon Exhaust, adapter pipe, clamps, and sealant
New Rear Pioneer Speakers
2 Keys made from code on passenger side door lock
New Battery
New Thermostat
New Radiator Cap
New Water pump belt

It's the little things to fix now as time goes by, like rear power antenna, AC, electric fan, yada yada yada.

Thanks so much to the members of this board with your help my car went from sitting 7 years to a functional good running daily driver. I have to admit that the sense of accomplishment is tremendous.

06-18-2010, 08:22 PM	#7
batmmannn 12psi boost Join Date: May 2010 Location: West Virginia Posts: 320	Success SUCCESS I just drove my car for about an hour and a half with no over heat, car ran at half way or below at all times on highway and in town. I didn't want to stop driving. It had been a long time since I had driven a Supra. The FIX I physically opened and closed my heater valve till it loosened up and burped the system with my heater on heater valve (VSV VALVE open) then I pulled the thermostat and tested it in heated water till it fully opened up. I also broke off the dangle and drilled the hole that the dangle left to a 4mm size. I reinstalled the stat, refilled the system and burped it again. This morning I drove it into town and had a Blown Head Gasket Test done on it and the motor passed. I hadn't overheated or lost fluid on my way to the garage so I decided to run it till it overheated to see if I still had a problem. Drove it for a long time about an hour and a half in city and highway and it appears to be fixed. Evidently I don't need my electric fan on to cool the motor it is 86 and sunny today. Special thanks to mrnickleye for his suggestion of drilling the thermostat, That made the difference! Either the new thrmostat had been stuck or I had air pockets in the heater core still. What it took! Used Starter New Air filter New Spark Plugs and Wires Helicoil Spark Plug hole repair Kit Dome light repair with small screw Fog Lights installed Swapped Passenger seat Running light Bulbs New Valve Cover Gaskets New Timing Belt New Coolant Fresh Gas New front crank seal Plenum gasket 2 new front Venturas HR II tires 2 used Eagle GT rear tires New Horn New Castrol GTX Oil and Bosch oil filter New Cannon Exhaust, adapter pipe, clamps, and sealant New Rear Pioneer Speakers 2 Keys made from code on passenger side door lock New Battery New Thermostat New Radiator Cap New Water pump belt It's the little things to fix now as time goes by, like rear power antenna, AC, electric fan, yada yada yada. Thanks so much to the members of this board with your help my car went from sitting 7 years to a functional good running daily driver. I have to admit that the sense of accomplishment is tremendous. __________________ 1987 N/A 7MGE Left Hand Drive MK3 Red 5 Speed and Black Auto Supras My Next project is the Batmobile! Last edited by batmmannn; 06-18-2010 at 09:18 PM.