01 monte carlo overheating

90

Asked by Aug 30, 2016 at 09:31 AM about the 2001 Chevrolet Monte Carlo LS

Question type: Maintenance & Repair

My car is STILL overheating, I have replaced the
rad, testator, rad hoses, water pump, cooling
fan sensor, rad temp sensor, as well as flushed
the system. Does anyone have any
ideasuggestions? It's not blocked because it's
flowing freely. Doesn't show any signs of. Bad
head gaskets, I'm just clueless

13 Answers

25,805

when engine gets up to temp, do you see the cooling fan/s come on? It also wouldn't hurt to use Block Tester on coolant, to rule out head/intake gaskets (it checks for hydrocarbons in coolant)

1 of 1 people found this helpful.
90

The fans don't come on until the temp Guage is almost in the red, then they bring it down a little bit, not even to the halfway mark. Gm really screwed up the 3400.

90

I was thinking about just toggle switching the fans. But I don't know

1 of 1 people found this helpful.
50,775

Did you remove or replace the thermostat? Sometimes running them with out a thermostat will make engines run hot because the coolant flows through too fast to pick up enough heat.

90

Replaced. I tried running my old car without one in the winter, it ended up destroyed. So I refuse to do that again

25,805

Your fans should be coming on sooner. Did you replace the temp sending unit, which feeds the dash temp gauge, or the engine coolant temp (ECT) sensor, which tells the ECM when to turn the fans on? If you have an ohmmeter you can test it in a pan of hot water.

1 of 1 people found this helpful.
25,805

Another thought, an air pocket trapped against the temp sensor would keep it from functioning. Hot air is not enough to make it respond, needs to have contact with hot coolant. So you might still have a case of trapped air.

2 of 2 people found this helpful.
90

I forget what the sensors we replaced were called, one was on the radiator itself, and the other plugged in next to the thermostat housing. It screwed in

25,805

Here is a pic of where the ECT is on the 3.4L; You may also need to go rent a radiator pressure tester from a parts store. Pressurize the radiator and cooling system and listen for any signs of a leak or bubbling coolant around the gasket mating surfaces. Even a tiny gasket issue can be causing ongoing air pockets in the system and boiling coolant.

90

That's the one we replaced.

90

Do you think maybe wiring the fans to a toggle switch would help? Since they don't turn on until it's extremely hot? If I have manual control maybe it will fix it

So if it's leaking anti freeze n it's coming from the top it could be the etc needing to be checked

My car over heats n leaks anti freeze head gaskets were replaced already n thermostat

Your Answer

Monte Carlo

Looking for a Used Monte Carlo in your area?

CarGurus has 1,353 nationwide Monte Carlo listings starting at $995.

ZIP:

Chevrolet Monte Carlo Experts

  • #1
    Tom Demyan
    Reputation
    520
  • #2
    Js08016
    Reputation
    480
  • #3
    John Saffrahn
    Reputation
    420
View All

Related Models For Sale

Used Chevrolet Impala
569 Great Deals out of 34,591 listings starting at $1,250
Used Chevrolet Camaro
398 Great Deals out of 31,729 listings starting at $2,395
Used Ford Mustang
743 Great Deals out of 42,277 listings starting at $1,300
Used Pontiac Grand Prix
37 Great Deals out of 2,737 listings starting at $1,200
Used Chevrolet Malibu
1,210 Great Deals out of 77,238 listings starting at $1,500
Used Chevrolet Corvette
236 Great Deals out of 22,107 listings starting at $2,500
Used Chevrolet Tahoe
627 Great Deals out of 36,859 listings starting at $1,800
Used Buick Regal
148 Great Deals out of 9,893 listings starting at $999
Used Chevrolet Silverado 1500
2,082 Great Deals out of 181,422 listings starting at $1,898
Used Pontiac Firebird
8 Great Deals out of 801 listings starting at $3,295

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.