Question about 1994 Toyota Previa

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Over heating on 1994 toyota previa

Replaced water pump and put in a new thermostat but still over heats, what could be the problem?

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Fan doesnt come on ????
thermostat upside down ?

bad temp sensor for fan

Posted on Jul 02, 2010

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Posted on Jan 02, 2017

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1994 Toyota Camry,New water pump,new radiator,but car is over heating and missing,it smokes from the radiator when I stop....


Did you replace the thermostat? How long does it take to overheat? Is there water coming out of the tailpipe? Do you have to keep adding water to the radiator?

Sounds like a blown head gasket from the engine miss. Pull the spark plugs, if any of them are kind of a bleached white on the electrode then you've got water in that cylinder and either a blown head gasket, cracked head/block, or a combination of those.

Good Luck!

Sep 01, 2014 | Cars & Trucks

1 Answer

How to replace thermost 1994 Toyota estema


In the USA the Estima is called Previa, and there may be some differences, depending on whether it has the 2.4L or a 2.2L engine or other options.
Labor Time for this job is One hour.
The water pump on the 2.4 Liter engine is accessed under the vehicle, very likely the same on any engine for these models.
Follow the radiator hoses to the engine until you find the water pump, which is near one of the drive axles.
The thermostat is bolted to the water pump with two bolts.
Drain the cooling system, then using a large pan under to catch any extra coolant when removing the thermostat housing.
Carefully clean the surfaces of both the thermostat housing and the water pump. [Check water pump for coolant seepage, which leaves a crusty beige or pink deposit. If so, replace the water pump.]

Install a new thermostat and gasket (Or O-ring).
Refill the coolant with the same coolant only if it looks clean.
I would also test the coolant to see what the PH is, which needs to be about 7.2 PH. (Coolant will turn acid over time, even when it looks okay.)
Make sure you put as much coolant back into the system as you removed.
Fully warm up the engine, and let it cool down before removing the radiator cap, then check for air in the system, topping up as needed.
The radiator needs to be full to the top.
Also check the overflow reservoir, which has level marks of Low and High, Never fill over the High mark.

Jul 05, 2014 | 1994 Toyota Previa

1 Answer

Toyota previa long time to heat


A thermostat that is stuck open will cause that. Drain the coolant and change thermostats.

Oct 31, 2013 | Cars & Trucks

1 Answer

1994 toyota camry- recently replaced radiator, timing belt, water pump and thermostat- no heat when idling- lots of heat when reving the engine or driving


check your antifreeze mix, this is a common problem when your antifreeze mix is too much antifreeze and not enough water. 50/50 mix to 55/45 mix is ideal for most applications. too much antifreeze and not enough water will not transfer heat as well as the proper mixture.
make sure your mixture is 50-55% antifreeze.

Jan 14, 2011 | 1994 Toyota Camry

3 Answers

Previa 1994 keeps overheating have replaced anti freeze but the temperature still going up ,done valve test still the same it drives and maintains right temp but when idle ie waiting in traffic the...


hi ive got the same motor but mines on a 96 plate check your electric fan shis should be cutting in to reduce temp when u are stuck in traffic

Nov 17, 2009 | 1994 Toyota Previa

2 Answers

1994 Toyota truck over heat we change water pump , head job, radiator thermostat


did you guys flush the coolant system and make sure there wasnt any corosine in the radiator, plus on some of those models you have to make sure that all of the air bubbles are out of the system or it get almost like vapor locked and the water wont flow throught the system,, also check the heater core try by passing it and running the motor you might have a plugged heater core also ,,,

Jul 30, 2009 | 1994 Toyota Pickup

1 Answer

Overheating


Put in a t-stat. No thermostat can act like a bad thermostat, causing over heating, i too have a 94, it was clacking eradically, turns out it was the t-stat opening and closing about 60 times a minute, so i took it out, it got hot, put a new one in, and no more issues.

Jan 16, 2009 | 1995 Toyota 4Runner

1 Answer

Toyota estima 2.2 td 1992 van overheating


the impellors in the water pump are prone to corrosion,especially if no or incorrect radiator additives have been used .this will cause water to stay in motor & boil whilst the water in the radiator stays cold because it cannot circulate.try flushing radiator ,installing a new thermostat (which is more than likely not opening )& radiator cap,refil with correct additive,.if the car still over heats then you will need to replace the water pump.bugger!!

Dec 28, 2008 | 1992 Toyota Previa

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