Overheating?

Hi,

Will it overheat if you are driving at highway speeds, or does it seem to happen in stop and go traffic?

Also, do you hear the cooling fan turn on once it goes over the midway point on the gauge? Does the fan turn on with the A/C turned on?

Let me know.

Joe

Yes, fans come on. I can't drive it far enough to know if its highway speed. Doesn't matter if stop and go or driving constant speed it still overheats.

Hi,

The first thing I would do is replace the thermostat. If the coolant is full and there is no air in it, the thermostat is likely sticking. If you want to remove it, it can be checked by placing it into boiling water to see if it fully opens.

Now, on this engine, the intake manifold needs to be removed to access the thermostat. Not an easy job.

If you look below, I added the directions specific to the thermostat. At the end of those directions, I added the removal instructions for the intake.

Let me know if this helps.

Take care,

Joe

See pics below. Note: Make sure to have the required tools before you begin.

Removed thermostat and it has some rust on it but installed it in boiling water and i only see it partially open does it open gradually? Or is this all it opens? If you zoom you can see it a bit open.

Unfortunately, a new one didn't solve it. Moving to the water pump.

Hi,

When you installed the new one, did the vehicle still act the same as the with the old one in it? Also, have you already replaced the pump? If not, let me know and I'll get you the directions if you need them.

Let me know.

Did not replace the pump yet. Still stayed in the middle and with time when it started to overheat fans came on and she started to climb.

Replaced it. Did not look bad but who knows maybe with high speed it acts up. Had to remove the engine and transmission mounts to be able to jack up the motor side just enough to be able to remove the water pump. Put everything together and now it starts and dies. Similar to say a no or weak fuel pump or same as if the MAF is disconnected. Starts, runs a second, and shuts off. Very strange. Checked all i disconnected and all is connected. Didn't really have to do much except to remove battery to get to the mount. Am stumped, ugh.

And whenever i try to scan it i get a linking error. Used 2 different scanners. Can't even get the code to what is wrong or maybe disconnected.

Am sure it's an immobilizer issue.

I left ignition on for a while to see if it will reset and it did not. Also when it starts the rpm needle does not move up. Is this controlled by the crank position sensor? I may have bumped a sensor or something off while jacking up motor. Can you tell me where it is located?

Here.

Removed battery cables, touched them for 10 seconds, put them back, turned ignition on for 30 seconds and it worked. I'll check if it overheats now.

Is there a bleeding procedure for this car? In case i need it?

Same results. 10-15 minutes running with full ac and no issues needle in the middle, then needle starts to climb and trmp from 220 to 235, then i rev it up and it chokes down to the middle then goes back up again. I have no heat or barely any heat from vents. Am almost sure there is a bubble or air in the system. I don't see a bleeder valve. Any help is appreciated.

Also, if the heater core is clogged up and causing no heat will the water still circulate in the engine or will it stop it from doing so?

Hardly any heat, very little on driver side, no heat just lukewarm heat on passenger side.

Hi,

It sounds like you may simply have an air blockage. I went back to the manual, and it provides two ways of bleeding the system. The first one includes the use of a cooling system charge kit, (VAS 6096).

At the end of those directions are how to do it without the kit. Take a look and let me know your thoughts.

Joe

See pics below.

I did that and let it idle until the fans came on and it stayed in the middle for a while. But i went under the car and the lower radiator hose is cold.

Then i turned the heat on and at first it was good on the driver's side but a lot of air. once i turn the blower high the air becomes cold. Am suspicious of this cold hose under the radiator.

When i turn the A/C on the air flow is super, strong on both sides.

Waited and waited on needle to move. But then only after i turned the A/C on it started to climb after a few minutes. I removed the cover on the heater core and both pipes are hot.

I cannot figure out how the cycle works. I think the lower one goes to the thermostat. Top one goes to engine.

Hi,

Are you referring to the lower radiator hose not getting hot? Also, everything you described and done leads me to think there is an air blockage still.

You may need to get the special tool indicated in the directions I sent. If you are not getting proper heat, the thermostat and pump have been replaced, that is what it sounds like.

Let me know.

Joe

Lower hose is super cold.

Is the radiator clean inside or is there anything that could be creating a blockage?

Joe

There is no cap on these radiators. So, i can't look inside. I'll remove the bottom hose and see.

Removed lower radiator hose and rusty water came down, but not much. Opened reservoir and more water came down but still not enough as expected from an open radiator. Rust is all over inside the reservoir and the hose. How do i remove the radiator? I guess this is where the issue is.

removed radiator, not much water came out, I guess it wasn't taking due to all the rust inside, rusty water came out...I ordered another. The problem now is how am I going to clean all the hoses? even the heater core am replacing since its easy. I disconnected the hoses on back of the engine and rusty water came out. No way to remove all these hoses as so many little ones divert from the big ones going to engine. I see rust inside the heater core hoses and the lower radiator hose, which goes to the thermostat.

Hi,

You will need to use pressure to blow things out. Get a good cooling system flush at the local parts store and follow the directions the manufacturer provides.

Also, here is a link you may find helpful:

https://www.2carpros.com/articles/coolant-flush-and-refill-all-cars

Let me know.

Joe