Question about 2000 Dodge Grand Caravan

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I replaced the thermostat and the coolant does not seem to get to the engine at al now. What is wrong?

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There should be an air bleeder on top of the thermostat housing. Make sure you bleed all of the air out of the coolant sysytem before running it or you may have an air pocket in a cylinder head and cause more problems. Never open a radiator while the engine is hot.

Posted on Apr 28, 2010

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2001 Ford F250, have no heat, blows only cold air. Have changed heater core, thermostat is working properly. Have checked and tried everything it seems and still no heat.


Hi Shannon, IM AL the owner of Big As Auto Repair.

Shannon, it looks like you have ruled out the coolant side not heating properly with the thermostat replacement and coolant flow through the heater core because you replace it as well. Let's first make sure coolant is getting to the heater core. Here's an easy way to check this issue. Start the engine and drive it until completely warm then park and leave the engine running, open the hood and check each heater hose that is connected to the heater core at the firewall. If both hoses are equally hot then the coolant is getting to the core and working properly. If one is a lot cooler then the other then you could have a heater valve on the system "OR" a water pump flow issue. BUT, if they are equally hot, then you most like have a heater door issue inside a/c housing. If the heater door is not working properly and staying on the cold side you will not have heat. Lets stay in close contact buy you going to my auto-repair-website and work together. Just click on "CONTACT US" and I'll work with you until we resolve this issue. http://www.bigasautorepair.com/

Nov 27, 2016 | Ford Cars & Trucks

1 Answer

How do I check if the water pump is working?


Hi Andy, Im AL the owner of Big As Auto Repair.

Andy, there's a lot of things that can cause an engine to overheat and pretty much the same on all engines. I don't what vehicle, engine size or year you have but, here the steps you need to take. (1) Check the coolant level, low coolant can cause overheating. (2) Check that the electric coolant fan motor is coming on if in fact its cooled by an electric motor and not a mechanical fan. If the fan is not operating properly or not coming on at all it will overheat. (3) After and only after the engine has cooled completely remove the radiator cap and start the engine and allowed it to reach operating temperature and watch the coolant in the radiator. It will overflow some until the thermostat opens, this is normal. BUT, if after it reaches operating temperature and it continues to blow coolant out and overheats, when the fan is operating then you may have 1 of 2 things happening. (A) The thermostat could be sticking closed. If it is replace it and re-test it again. (B) If it still blows coolant out after replacing the thermostat, you could possibly have a blown head gasket. BUT, DO NOT assume its a blown head gasket, have it checked to make sure. If this helps you out please give me a thumbs up on my auto-repair-website here: http://www.bigasautorepair.com/

Jan 24, 2016 | Cars & Trucks

1 Answer

I have a 2006 Buick Lucerne V6 code po128 comes up. What does it mean?


P0128 BUICK P0128 BUICK - Engine Coolant Temperature Below Thermostat Regulating Temperature Repair Importance Level: 3/3 Repair Difficulty Level: 2/3 help.jpg Share facebook.png twitter.png linkedin.png google-plus.png sep.png print.png pdf.png share.jpg 3 comments.png ' Add Comment xicon.jpg http://www.autocodes.com/p0128_buick.html Forum Code Possible causes - Leaking or stuck open thermostat
- Low engine coolant level
- Insufficient warm up time
- Faulty engine coolant temperature sensor
- Engine coolant temperature sensor harness is open or shorted
- Engine coolant temperature sensor circuit poor electrical connection
help.jpg What does this mean? Tech notes If cooling system is not leaking and the fluid level is OK, replacing the thermostat usually takes care of the problem.
help.jpg What does this mean? When is the code detected? If the Powertrain Control Module (PCM) detects the calibrated amount of air flow and engine run time have been met, and the Engine Coolant Temperature (ECT) has not met the minimum thermostat regulating temperature, the code P0128 will set. Possible symptoms - Engine Light ON (or Service Engine Soon Warning Light) P0128 Buick Description An Engine Coolant Temperature (ECT) sensor monitors the temperature of the coolant. This input is used by the Powertrain Control Module (PCM) for engine control and as an enabling criteria for some diagnosis. The air flow coming into the engine is accumulated and used to determine if the vehicle has been driven within the conditions that would allow the engine coolant to heat up normally to the thermostat regulating temperature. If the coolant temperature does not increase normally or does not reach the regulating temperature of the thermostat, the diagnostic that use ECT as enabling criteria may not run when expected.



Read more: http://www.autocodes.com/p0128_buick.html#ixzz3vprh5jzz

Regarding which thermostat to use, I am guessing it depends on where you live.

Ask these people when you order the thermostat.

http://www.autopartswarehouse.com/shop_years/buick-lucerne-thermostat-2006.html

Dec 30, 2015 | 2006 Buick Lucerne

1 Answer

I have a 2000 ford Taurus I have changed the water pump and thermostat and it still runs hot why


Hi Lucas, Im AL the owner of Big As Auto Repair

Lucas, first thing to check for is make sure the cooling fans are coming on. Second thing to check and very common issue after replacing the water pump, is air trapped in the system. Make sure you get all the air out of the system. Some systems have an air bleed screw to help with this issue. If the fans are coming on and all the air is out of the system, then you'll want to check for coolant flow in the radiator. CAUSION: Let the engine cool before taking the cap off the radiator. After removing the radiator cap start the engine and let it idle, if the coolant does not flow after reaching operating temp, then you may have a restriction somewhere in the system. The other thing to check is make sure you put the thermostat in correctly, some vehicles you can install it backward, make sure the spring end is going toward the engine. If you have coolant flow and the coolant is blowing out of the radiator you may have a blown head gasket or timing issue. Hope this helps and please send people to my auto-repair-website at: http://www.bigasautorepair.com/

Sep 30, 2015 | 2000 Ford Taurus

2 Answers

I changed my thermostat but that radiator symbol still comes on for my 2004 kia Amanti. When you replace the antifreeze do have to prime it someway brcause it doesn't seem to flow like it should.


I've dealt with this vapor-lock issue in multiple ways. One was to put an aspirin in the thermostat to hold it open. When disolved it would work properly. But want it open for a bit so that coolant can flow.
The other was to squeeze the radiator hoses to push coolant and work air into radiator so it could come to top of radiator. Another is to simply run it till warms up, shut it down and ad coolant to the reservoir.

Apr 14, 2015 | 2004 Kia Amanti

1 Answer

2000 daewoo leganza is overheating, leaking anti freeze, and water. what is wrong?


sound like thermostat sticking close.replace thermostat and radiator pressure cap.if already done.you could have faulty water pump.if engine overheating at long slow traffic line or setting at a stand still.the engine cooling fans should be running, check and see if cooling fans running if not,check cooling fans fuses and relays.if all is good,hot wire make sure coolings fans okay.if all is good,code scan vechicle for faulty engine coolant temperature sensor and ecm problems.you need a code scanner where you can check live data check see if coolant temperature sensor reading correctly if engine coolant temperature is 190 degrees the coolant sensor. the scanner suppose to show 190 degrees in temperature if not it reads 80 or 90 degrees the engine coolant temperature sensor is faulty need replacing.if all is good check engine oil if look like milk shake blow head gasket will cause over heating.to be on the safe side i would replace thermostat and radiator pressure cap first.to make sure engine coolant circulating through radiator and engine block.

Nov 15, 2011 | 2000 Daewoo Leganza

3 Answers

I replaced my radiator on my 2004 with a 2.2 and it seems like the thermostat is not opening. It can not get the air out. It seem to just to over heat and push the coolant out. Randy


REPLACE THERMOSTAT IF TOP COOLANT COOLANT HOSE GOING TO RADIATOR IS HOT TO TOUCH THERMOSTAT OPEN. TO BLEED COOLANT SYSTEM FIRST YOU NEED TO ADD COOLANT TO THE COOLANT OVER FLOW JUG UNTIL COOLANT LEVEL STOP DROPPING AND STAY AT FULL COLD MARK.WAIT 3 MINUTES IF COOLANT DROPS ADD MORE COOLANT UNTIL COOLANT STAY AT FULL COLD MARK.WITH RADIATOR OVER CAP OFF CRANK ENGINE FOR MINUTE WATCH COOLANT LEVEL AT OVERFLOW JUG.IF COOLANT DROPS ADD MORE COOLANT IN THE OVERFLOW JUG.WHEN COOLANT LEVEL STOP DROPPING IN OVERFLOW JUG.SCREW BACK ON THE RADIATOR CAP TO OVERFLOW JUG.WHILE ENGINE IDLING WATCH TEMPERATURE GAUGE WHEN TEMPERATURE START CLIMBING TURN OFF ENGINE WAIT A WHILE KEEP FROM GETTING SCALDED.WHEN COOLANT COOL DOWN SOME. PLACE A LARGE RAG OVER THE COOLANT OVERFLOW JUG OPEN CAP LITTLE AT A TIME UNTIL PRESSURE RELEASED, THEN REMOVE CAP ADD MORE COOLANT IN THE OVERFLOW JUG TO THE FULL COLD MARK.THEN REPEAT THE PROCESS SCREW BACK ON THE COOLANT OVERFLOW RADIATOR PRESSURE CAP.THEN START ENGINE WATCH TEMPERATURE GAUGE WATCH COOLANT TEMPERATURE GAUGE WHEN COOLANT TEMPERATURE START RISING TURN OFF ENGINE AGAIN WAIT UNTIL ENGINE COOL DOWN ENOUGH TO KEEP FROM GETTING SCALDED TAKE PLACE LARGE RAG OVER RADIATOR CAP WHICH IS THE COOLANT OVERFLOW JUG CAP OPEN CAP LITTLE AT A TIME UNTIL PRESSURE RELEASED ADD COOLANT UNTIL AT FULL COLD MARK. WHEN YOUR COOLANT LEVEL STOP DROPPING.AND TOP RADIATOR HOSE VERY HOT THERMOSTAT OPEN AND AIR IS OUT THE COOLANT SYSTEM. MAKE SURE YOUR COOLANT OVERFLOW JUG HAS COOLANT IN IT,WHEN ENGINE COOL DOWN CHECK COOLANT OVERFLOW JUG KEEP COOLANT LEVEL AT FULL COLD MARK.BECAUSE IF OVERFLOW JUG IS EMPTY THATS A SIGN RADIATOR COOLANT LEVEL LOW.WHEN OVERFLOW JUG EMPTY IT WILL ALLOW AIR GET IN THE COOLANT SYSTEM AND CAUSE CAR TO OVERHEAT.WHEN REPLACING THERMOSTAT ALSO REPLACE THE RADIATOR CAP ON THE COOLANT OVERFLOW JUG.

Aug 09, 2011 | 2004 Oldsmobile Alero

2 Answers

I have a 2005 gmc jimmy, the engine light is on and i hooked up my code reader and it says Coolant Temp Below Thermostat Regulating Temp. What does this mean and how do i fix it?


your thermostat is designed to open at a specific temp, for example a 195 thermostat is supposed to start opening at 195 but will not fully open until it reached about 210. Your ECM has determined that your thermostat is not 'closed', but is hung open, not allowing the engine to reach a temp that the computer is set to see. So the thermostat is either malfunctioning, or your temperature sender unit is reporting the wrong thing to the ECU. Probably a good time to replace the thermostat, if the condition persists, replace the sender unit-both items together will cost less than $30 total.

Apr 18, 2011 | GMC Jimmy Cars & Trucks

2 Answers

01 sts head and gasket good replaced water pump thermo rad cap works good for 2hrs then over heats and no heat im stumpted cooling fans maybe i cant figure it out a bad thermostat even though it was just...


The temp gauge being erratic should have been your sign. Are you sure its overheating or are you going by what you see being registered on the temp guage.Also after doing work such as water pump sometimes you will get air lock in the system you need to bleed the system after performing such a job. If the temp gauge is bad you need to replace it.

Jan 02, 2010 | 2001 Cadillac Sts

2 Answers

Removal/installation of a thermostat


You're going to lose some coolant, so have a bucket or other container ready. Follow the upper radiator hose to the point where it's connected to the engine. The hose is clamped to a metal housing which is bolted to the engine. Remove the bolts (not the hose) and lift the housing to expose the thermostat (may require a little prying with a screwdriver or similar tool). Note how the old thermostat is fitted (which end is up), lift it out of the engine, and then remove all traces of gasket from the housing and the engine. Install the new thermostat and gasket, replace the bolts, add coolant as necessary, and you're done.

Dec 09, 2009 | 1995 Subaru Legacy

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