Coolant leaking

Hi,

Could you take a pic of the one on the vehicle now so I can see it? Also, I attached a pic below showing different connectors used on this vehicle. Do you recognize the connector or is it a simple worn clamp?

See pic 2 and let me know if I have the correct hose.

Let me know.

Joe

See pics below.

Hi Joe,

It kind of looks like #6 in the 1st pic but definitely #1 in the 2nd pic.

Hope this helps.

The quick connector indicated comes as a unit with the throttle body inlet pipe. It isn't replaceable by itself. See pic 1 and let me know if that is what you are seeing. If that is correct, the part number for it should be 25192905. Pic 2 shows an OEM replacement part and price.

Let me know if this helps.

Joe

See pics below.

Hi Joe,

Unfortunately, my tale of woe continues

I replaced the throttle body inlet pipe and there is no more bubbling or leaking. I test drove the car yesterday for about an hour and everything worked great. This morning the car started smoking again as antifreeze leaked onto the exhaust.

As stated, I initially replaced the thermostat housing, then the water pump upon noticing leaking from the passenger side of the engine. The car ran great for a few days but started leaking from the inlet pipe which has now been replaced and is dry as bone.


I've enclosed a new pic of the throttle housing, and I was wondering if you could tell me what the connection is that I have circled. Although I see nothing leaking from that port, I found it rather strange that there was no gasket for that connection either included or removed when I replaced the whole unit.

Where else might I look for a leak?

Thanks again

Hi,

That is the oil cooler inlet pipe. If you follow it, it should lead to where the oil filter is located. Take a look at the attached pic. Just want to confirm we are looking at the same things. Also, I would think there should be a gasket there. Is that where it is wet?

Let me know.

Joe

See pic below.

Yes, that's the pipe in question. However, there wasn't a gasket there when I took it apart. Although it's hard to tell if it's now wet, I'm assuming fluid runs through it, correct? Would I need gaskets for both ends of the pipe? I can't seem to find them in any diagrams.
Thanks.

Hi,

Yep, coolant runs through it and goes to the oil cooler where it circulates and returns to the cooling system.

According to what I'm seeing, there should be an O-ring at both ends. Take a look at the pics (extremely basic pics/directions) from my manual. I highlighted the o-rings for you.

I bet when you reinstalled things, the o-ring was moved out of position or was nicked.

Let me know if this helps.

Joe

See pics below.

Hi Joe,

I'm assuming the O rings are the same on both ends based on the diagram of the pipe. Unfortunately, no one locally has it in stock, so I'll need to order it. However, when searching based on model year of car and 1.8L engine, I'm offered three different versions.

Would you have any insight as to which one is correct? "Images attached "

Thanks again

Tim,

I totally understand your frustration. I just spent an hour trying to figure it out myself. I narrowed it down to what I believe is the original GM part number, 24445723. Interestingly, when you purchase the new pipe, the new o-rings are with them, but it was like pulling teeth to get only the o-rings.

I attached a pic below for your reference. Pic 2 is the cross-reference to Fel-Pro parts. It looks like the second pic you provided is the one. (I hope) LOL, Wow, that was an interesting look-up. I can usually do it in a couple of minutes. LOL

I hope this helps. I may have lost the last three hairs on my head. LOL

Take good care of yourself,

Joe

See pics below.

Hi Joe,

Sorry for the delay in getting back, but I finally got to finish up a week ago on Friday and didn’t want to jinx it. At this point, it looks like repairing the 4th leak was the charm.

It turned out it was the pipe’s O ring this time as you suggested, but not the one at the thermostat housing but the one connecting to the left side behind the exhaust manifold. Luckily, I didn’t have to remove the manifold and was able to just slip it in, but it was difficult working around that manifold, not to mention dropping and losing a bolt.

It might have been easier had I removed the component circled in the picture below. I’m sure there would have been a gasket involved, and not knowing the name of that particular component, I decided to work around it as well. Given that we own 3 Sonics (this one the 2013 100K, a 2017 55K & 2020 6K still under warranty for a while) hopefully the repair will be easier as the newer one's age.

Sorry for causing your hair loss.
Thanks so much for all your help.
Tim

Tim,

Don't worry about the hair. It was only the last three. LOL You are very welcome and thanks for the update.

I'm glad to hear you got it taken care of. And certainly, nothing is easy to work on anymore.

Please feel free to come back anytime in the future if you have questions. You are always welcome here.

Take good care of yourself,

Joe