Question: Car overheats but only when stopped like at a stop sign.

Answer: Make and model vehicle please.

2007 Chevy Equinox. I Changed thermostat but still doing it.

Did you purge the air out of the system after t-stat replacement?

Yes.

Are there any bubbles in the coolant when running?

No.

What engine size?

Not sure. 3400 v6 i think.
;
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Chevy Equinox Overheats | Venture Van Heater Core Pipe Location

Yes, probably the 3400 engine. A common problem is a leaking rear headgasket. When this happens,
cylinder compression is forced into the cooling system causing air pockets. When you accelerate or drive at
speed higher than idle, the air pockets move, so the engine will cool down. This is sometimes accompanied
by no heat from the vents.

So does that mean that I should change the head gasket Or get a new motor ?

If a bad headgasket, it would just need to be replaced.

OK, thank you for the information.
Question:  Hi, I'm looking for the heating core inlet and outlet hook up location on the engine and firewall on my 2001 3.4 Chevy
Venture Van WB edition. I just bought this minivan and I have no heat. The engine was replaced recently and was wondering if
maybe the mechanic forgot to hook it up. Knowing that when they had the engine out probably bypassed it to test it when out of body
before installation.

Answer: They are located on the center of the firewall, best seen from under the van.

Ok great. I seen a couple of aluminum pipes fastened to the center firewall with no hoses hooks on them ( one just bout 3/4"taller
then the other. They look clean as if it was just recently removed so i take it there is more then one heating core. One for the back as
well? It does have heat and a/c controls for the rear.

Yes, it does sound like those are the pipes.

Well then that semi good news. lol now to find the out and in one the engine. Would it come directly off the water pump?
No. One pipe bolts to the back of the rear clinder head, the other is near the thermostat housing.

Is there anyway I can gitt a online picture showing me the inlets and outlets of the heating system? Sent to my email address?

Sorry, we dont have a pic of those particular things.

Ok. Do you know if I will be able to access the hose. Hook ups myself ?

Yes, you should be able to. They are formed hoses between engine pipes and firewall pipe. If you go to a parts store to get those
hoses, they should have a pic.

Ok great. Hey thanks.