Question about 1987 Toyota Pickup

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How do you de-scale the cooling system of an '87 Toyota pickup"?

Our pickup is starting to run hot and is losing coolant forced back into the overflow resevoir. Also the heater has stopped putting out warm air. We have installed a new radiator, but that didn't help. Any suggestions?

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  • 12 Answers

Change the thermostat

Posted on Jul 28, 2013

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Posted on Jan 02, 2017

alicantecoli
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SOURCE: erratic idle- 1992 toyota Pickup, 22Re

sounds like head gasket ???

Posted on Jan 01, 2009

  • 60 Answers

SOURCE: 1994 toyota pickup heater stopped working

Sounds like there is air in the cooling system causing the engine not to overheat but the heater not to work. Flush cooling system and work the air out of the system.

Posted on Mar 01, 2009

  • 135 Answers

SOURCE: 91 toyota 4x4 22re overheats on highway, but not at idle.

original issue sounded like thermostat but now that you have lost power i would have to say thermostat, blown head gasket, and warped head

to check thermostat find and remove place in pot of boiling water the see if it opens, then to ice water to check if closes.


the only way i know to check headgasket and head is to check oil and water. oil will have water in it, and water iw have oil in it

Posted on May 04, 2009

  • 290 Answers

SOURCE: 2004 toyota celica will not blow hot air for twenty minutes

If the engine temprature does not reach the normal level as it used to, it may be the coolant thermostat.

Iif it does, it could be air diverter gates not working properly, cold air blowing at a a light could point to that. The diverter gates are located under the dash.

It also coul be the valuve that controls the water to the heater core, but unlikely cause of the cold air at a light.

Posted on Jan 11, 2010

  • 714 Answers

SOURCE: Heater doesn't put out heat.

could be your temp control actuator which is under the dash

Posted on Jan 31, 2010

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1 Answer

My ranger is losing radiator fluid from the overflow but not the radiator , i can also smell radiator fluid but it's not overheating and i can't find a leak.


Losing fluid from the relief port is a sign of the coolant pressure being too great or just a cap that has had better days. The smell of hot coolant lingers so not seeing a leak is totally possible. Unfortunately, there are other problems that could cause this such as a bad head gasket which will introduce high pressure into the cooling system and thus forcing coolant out through the relief (overflow).

I say change the cap, it's cheap enough and probably original. Make sure the coolant is clean and mixed properly. If it persists, there is a dye you can put in the cooling system that reacts with combustion gases and can be seen under and ultraviolet light. If you are getting combustion gases into the cooling system, the repair is quite expensive.

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try taking out the thermostat and running without it, also take lose all the cooling system hoes es and running straight water through it to clean out your cooling system.

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Car over heats within 30 min. after starting


Thermostat is bad or the head gasket is blown, Test on cold engine, first remove radiator cap, start engine and observe coolant in radiator, you should not see any air bubbles being produced by the engine as it warms up, some coolant may slosh out so locate a drain pan under car to catch any overflow, keep pets away from coolant!
If air bubbles are present the head gasket is suspect, further testing with a cooling sytem pressure checker is required to confirm the diagnosis. I had a 22RE in a 94 Toyota Pickup that had a warped block causing a blown head gasket. Not a cheap repair if it is.

Bad thermostats do not let the coolant into the radiator hence the engine will be hot but the radiator will feel cold when running.

Be careful with radiator caps, never remove one while the engine is hot, scalding is a most unpleasant experience.

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you need to replace thermostat and radiator cap.look under hood around engine compartment.look for a radiator cap near radiator,add 50/50 antifreeze and water to coolant system to bring up boiling point.pure water will cause engine run hotter because water evaporate away,remove radiator pour coolant in the radiator until coolant stop dropping in the radiator now some vechicle pour coolant in the coolant overflow jug,pour coolant until coolant level stop dropping and the coolant level stay at cold full mark.start engie let idle few minutes, watch coolant level in radiator if coolant start dropping add more coolant, when coolant level stop dropping put radiator cap back on let engine idle until both top radaitor hose and bottom coolant hose get warm turn off engine wait until it get cool then take a large rag slightly open radiator just a litle at a time to keep from getting scaled.once radiator remove add more coolant if low,put radiator cap back on start the engine let it idle watch the temp gauge if temperature gauge going hot zone stop engine wait until cool then add more coolant,keep doing this until engine stop overheating going into hot zone and coolant level stop dropping,make the coolant overflow jug coolant level stay at full cold mark, dont let jug run empty if so air will get in the coolant system causing engine to overheat.

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1 Answer

No my alero is overheating. I have replaced the thermostat and waterpump and put a new cap on reservior and im losing coolant out the overflow


YOU NEED BLEED AIR OUT THE COOLING SYSTEM.WAIT TO ENGINE COOL DOWN.YOUR VECHICLE YOU HAVE TO POUR COOLANT IN THE COOLANT OVERFLOW JUG UNTIL COOLANT LEVEL STAY AT THE FULL COLD MARK.THEN START ENGINE LET IT IDLE A FEW MINUTES WATCH COOLANT IN THE OVERFLOW JUG WHEN IT DROPS ADD MORE COOLANT UNTIL COOLANT LEVEL STAY AT FULL COLD MARK.WHEN COOLANT LEVEL STOP DROPPING IN OVERFLOW JUG.SCREW RADIATOR CAP BACK ON OVERFLOW JUG WATCH ENGINE COOLANT TEMPERATURE GAUGE AS COOLANT TEMPERATURE START CLIMBING TURN OFF ENGINE LET IT SET A WHILE KEEP FROM GETTING SCALDED.TAKE LARGE RAG PLACE OVER COOLANT OVERFLOW JUG CAP SLOWLY OPEN RADIATOR CAP A LITTLE AT A TIME UNTIL PRESSURE RELEASE.REMOVE OVER FLOW JUG CAP.ADD MORE COOLANT UNTIL COOLANT LEVEL AT THE FUL COLD MARK ON THE OVERFLOW JUG.THEN SCREW CAP BACK ON THE OVERFLOW JUG.START ENGINE LET IT IDLE AGAIN WATCH ENGINE COOLANT TEMPERATURE GAUGE WHEN TEMPERATURE GAUGE START CLIMBING.TURN OFF ENGINE WAIT A WHILE.CHECK COOLANT LEVEL IN THE OVER FLOW JUG.DO THIS PROCEDURE UNTIL THE COOLANT LEVEL IN THE COOLANT OVERFLOW JUG STOP DROPPING AND STAY AT FULL COLD MARK,WHEN THE TOP RADIATOR HOSE GET HOT THERMOSTAT OPENING AIR IS OUT THE COOLANT SYSTEM. WHEN ENGINE COOLS DOWN.CHECK COOLANT OVERFLOW JUG COOLANT MUST BE IN THE COOLANT OVER FLOW JUG AT THE FULL COLD MARK WHEN ENGINE COLD. DONT .DONT OVERFILL COOLANT OVERFLOW JUG.KEEP COOLANT IN THE OVERFLOW JUG IF YOU LET COOLANT OVERFLOW JUG RUN DRY AIR WILL BE DRAW IN COOLANT SYSTEM CAUSE ENGINE TO OVERHEAT.

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1 Answer

1990 toyota pickup is running hot and when i shut


Try with the small stuff first. Replace the thermostat. Before you do that, you should flush and refill your system with just water after the flush process. The bottle of solution that you put into your radiator to flush it and clean it has instructions, follow those. Then let the car cool down and drain the system and refill it with fresh water only. Run this water for a bit and then do it once more. Once cooled back down , replace thermostat and replace the 50/50 mix of antifreeze and water.
Check engine oil level as well, low oil will overheat engines quickly.
NEVER REMOVE THE RADIATOR CAP ON A HOT ENGINE. !
NEVER REMOVE THE RADIATOR CAP ON A HOT ENGINE. !!
NEVER REMOVE THE RADIATOR CAP ON A HOT ENGINE. !!!

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1 Answer

Need to know if i need to bleed the cooling system, after installing the radiator?


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2 Answers

Hello my 1994 camry toyota has a problem holding the water. We replaced the thermostat,fan switch,radiator cap, and it keeps comsuming the water. What do you think the problem might be? Javier


Javier, have you checked the coolant overflow tank for holes, cracks, or loose hose? When the engine in your car heats up, the coolant expands. The coolant overflow tank (located near the radiator) takes up any coolant that is forced out of the radiator. If the tank is damaged or not connected to the radiator correctly, the coolant will not siphon back into the cooling system when the engine cools off.

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My 87 toyota pickup is hard to startwhen it is cold or hot and it revs high when u get it started when it is cold


87 toyota truck 22r skipping when cold runs 90% better when it gets warmed up. can you help

Mar 04, 2010 | 1987 Toyota Pickup

1 Answer

Still losing coolant


Hi, Sounds like the water pump is not circulating the water, as soon as the engine heats what water is in it, it will boil. Since you are brave enough to open the radiator when it is hot ( Bad Idea ! ) open it when it is cold, start the car and watch to see if the coolant circulates. You may have to wait unit the thermostat opens and if the water pump is bad when the thermostat opens it may spray hot coolant and steam instead of circulating what is in the radiator so don't be in the way. Not the best way to test this but works if you don't have diagnostic tools. Good Luck! By the way, coolant means antifreeze mixture which if it gets too thin lowers the boiling point significantly.

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