Question about 1985 Toyota Passenger

2 Answers

Toyota CR27 (2C; 1974cc) Engine Over Heating after repair


I recently got repaired the 2C engine of my Toyota CR27 dual purpose van.

The issue I originally had was a problem related to engine overheating (and resulting water boiling). Got the complete engine repaired with new oil pump, piston rings (without block reboring), gaskets.

The problem still remains even after and the engine still overheats.

Appreciate an answer which I could use as a pointer to start my diagnosis.

Posted by on

  • 5 more comments 
  • Jeremy Pernar Jun 06, 2010

    cooling system issue? get back to me with more info

  • sanjaka Jun 06, 2010

    Hi 'alicantecoli', I did clean the radiator before starting the engine this time by physically removing the two tanks and then cleaning the tubing as well.

    Any other suggessions?

  • ivan whisker
    ivan whisker Aug 16, 2014

    try thermostat if it doesent open cylinder head will overheat if possible try removing thermostat and run engine or drop thermostat in boling water to see if it opens if not replace

  • sabelo Nov 14, 2016

    hi I've 2c engine in a vw microbus is overheating it was a turbo know ive another one without turbo but still overheating help plz

  • sabelo Nov 14, 2016

    the no thermostat new water pump radiator checked

  • Philip Maurice Fry
    Philip Maurice Fry Aug 20, 2017

    My thoughts are head gasket,but probably crack in head.Test for gas with analyser after removing radiator pressure cap.It can be tricky to analyse.I have been Toyota engineer for years and analyser check never fails ! Cheers Phil.

  • Philip Maurice Fry
    Philip Maurice Fry Aug 20, 2017

    I am currently a Marine Engineer.



2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Toyota Master
  • 22,306 Answers

Your radiator is blocked ,try putting some caustic in the rad and running enging for an hour then flushing it and try that ,if it works dont forget the antifreeze,put it in after you have cleared the fault

Posted on Jun 06, 2010

Testimonial: "Thanks for the advise."

  • Colin Stickland
    Colin Stickland Jun 06, 2010

    right remove the water pump and check the drive for the impeller ,if its plastic it could have come off the drive shaft ,this is a common fault and i come across it quite often,now as you will appreciate i havent worked on every model of every vehicle so i have no idea of wiether this model uses a plastic impeller but it might be worth having a look as it could have a aftermarket one fitted ??with a plastic impeller


  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert whose answer got voted for 20 times.


    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 104 Answers

With reference to your details, You may required to check the thermostat valve function as per requirement.
Check whether Temp. in instrument panel indicate the right temp.
Check the radiator cooling fan starts & stop at appropriate time.
Check circulation pumps works properly.

Posted on Jun 06, 2010


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

I have a 2003 Dodge Caravan and recently my van hesitates and bucks and stalled while I was pushing on the gas. What could the issue be?

This generation of Caravans had a problem with the fuel injection wiring harness.
The problem is excessive heating of the harness and the poor quality of the insulation on the individual wires located within the harness. The spot to check is located where the engine FI harness plugs into the body fi harness just behind and below the ign. coil.
It is located near the exhaust crossover and once repaired should be relocated.
Examining the harness will not revel the deteriorated wires located within the harness. You must cut open the outer harness covering on the engine side of the connector to see the wires and make the repairs.
Sometime you can re-insulate the individual wires with tape but it's best to replace the engine FI harness and it's not hard to do.
Ebay sells the harness for about 125/150 bucks.

Sep 17, 2016 | 2003 Dodge Caravan

1 Answer

Hi i have just changed the oil in my toyota hiace van, diesel engine and noticed some water in the old oil... Is this a problem? Why would it happen, what should i do about it?

If you have coolant in the oil you have a problem.If you keep driving it you are going to have a bigger problem. Take it to a shop that is familiar with that engine or you will end up with a BIG repair bill.

Jan 10, 2016 | Toyota Cars & Trucks

1 Answer

My van is heating up and theres a big clunk when I hit potholes.

Year make and model? Do you notice any check engine lights coming on the dash when this happens, also has the vehicle had any recent repairs or any reason why this may be happening? Any input from you is helpful. I will check my resources and see what we can find out. Please advise

Jul 07, 2015 | Cars & Trucks

1 Answer

Engine heating but temp. gauge shows cold

Check sender and connections.

Dec 03, 2012 | Cars & Trucks

2 Answers

The engine is 2.0 I change gear box, put radiator, change fan, top cylinder gasket, still the car is over heating.

When u changed the head gasket, did u by chance brought it to the machine shop to have it SHAVED, so that it will seat on the block completely flat?

Nov 23, 2010 | 2001 Volkswagen Passat

2 Answers

My engine light is blinking on my 2000 ford windstar what could be wrong with it

paradise by the dash board lights? i also have engine, brake, abs, and door lights on, cruise control has its own mind, and just recently o/drive kicks out on its own(very dangerous on icy roads). mine going for recall issues as posted: rear axle cracking, under hood fire from leaking fluid onto (2) 40 amp connectors,--- recall issues repaired at no charge to you--good luck

Nov 15, 2010 | 2000 Ford Windstar

4 Answers

2002 camry

It sounds like your valve seals are getting old and are leaking oil into your pistons.As long as it is not using a lot of oil or fouling your spark plugs drive the heck out of it and look the other way when you first crank it up in the morning.
One other problem that will cause this is a cracked head or a leaking head gasket which is getting water on your pistons overnight. Watch for #1 low antifreeze in your radiator #2 higher than normal engine temperatures. This could be a serious problem that could cause expensive damage to your engine if not corrected.

Jun 03, 2008 | 2002 Toyota Camry

Not finding what you are looking for?
Cars & Trucks Logo

907 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toyota Experts


Level 3 Expert

77932 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8830 Answers

Are you a Toyota Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides