Question about 2003 Chevrolet TrailBlazer

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My 2004 TrailBlazer overheats in running only I changed acdelco water pump , thermostat and coolant water and still overheat

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  • GetMeOttaHere May 31, 2010

    A common problem is radiator clogging. Is the radiator allowing the coolant to flow thru without obstruction? How many miles are on this vehicle?

  • Anonymous Mar 13, 2014

    2004 trailblazer overheats

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1 Answer

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  • Master
  • 672 Answers

Check your fan clutch, very typical problem on these 4.2L engines. These fan clutches are electronically controlled. Another issue may be clogged radiator.

Posted on May 31, 2010

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1 Answer

1999 Cadillac Eldorado ,overheating changed thermostat , overflow cap ,no white smoke coming from exhaust.hot blowing from heater


Are the cooling fans coming on ? Go under the hood in the engine compartment , with the vehicle running have some one turn on the A/C , do you see and or hear the cooling fans come on ? Could be the coolant temperature gauge is bad ! How many miles on the vehicle ? Ever have water pump replaced ?

1

Check for a loss of system pressure.
Is there a loss of system pressure?
--
Go to Step 2 yes
Go to Step 3 no

2

Inspect and repair any faulty hose connections.
Does the engine still overheat?
--
Go to Step 3 yes
System OK

3

Check for low coolant protection (-37?°C/-34?°F).
Is there low coolant protection (-37?°C/-34?°F)?
--
Go to Step 4 yes
Go to Step 5 no

4

Test solution. Replace the coolant if necessary.
Does the engine still overheat?
--
Go to Step 5 yes
System OK

5

Check the water pump belt for low tension.
Is the water pump belt tension too low?
--
Go to Step 6 yes
Go to Step 7 no

6

Replace the water pump belt tensioner.
Does the engine still overheat?
--
Go to Step 7 yes
System OK

7

Check for an inoperative thermostat bypass.
Is the thermostat bypass inoperative?
--
Go to Step 8 yes
Go to Step 9 no

8

Replace the bypass.
Does the engine still overheat?
--
Go to Step 9 yes
System OK

9

Check the water pump.
Is the water pump inoperative?
--
Go to Step 10 yes
Go to Step 11 no

10

Replace the water pump.
Does the engine still overheat?
--
Go to Step 11 yes
System OK

11

Check the radiator fins for obstruction.
Are the radiator fins obstructed?
--
Go to Step 12 yes
Go to Step 13 no

12

Inspect and clean the radiator fans.
Does the engine still overheat?
--
Go to Step 13 yes
System OK

13

Check the cooling system passage for obstruction.
Is the cooling system passage blocked?
--
Go to Step 14 yes
Go to Step 15 no

14

Inspect and flush the system. Reroute or replace the hose if necessary.
Does the engine still overheat?
--
Go to Step 15 yes
System OK

15

Check the water pump belt for damage.
Is the water pump belt damaged?
--
Go to Step 16 yes
Go to Step 17 no

16

Replace the water pump belt.
Does the engine still overheat?
--
Go to step 17 yes
System OK

17

Check the cooling fans.
Are the cooling fans inoperative?
--
Go to Step 18 yes
Go to Step 19 no

18

  1. Inspect the electrical connector. Replace if necessary.
  2. Does the engine still overheat?
--
Go to Step 19 yes
System OK

19

Check the throttle body circuit flow.
Is the throttle body circuit flow restricted?
--
Go to Step 20
Go to Step 21

20

  1. Inspect the orifice and associated hose. Replace if necessary.
  2. Does the engine still overheat?
--
Go to Step 21
System OK

21

Check for a stuck thermostat.
Is the thermostat stuck in the closed position?
--
Go to Step 22
--

22

Replace the thermostat.
Does the engine still overheat?
--
--
System OK

Sep 16, 2015 | 1999 Cadillac Eldorado

1 Answer

Overheating


Your belt may be loose and not turning the water pump enough to circulate the coolant causing it to run hot,crank car up, have some one press gas pedal and watch belt turn,if not turning tightly,then belt or tensioner is bad.

Mar 25, 2014 | 2004 Nissan Sentra

1 Answer

What causes my 2004 chevy trailblazer to overheat? I got the radiator replaced, due to a crack across the top from overheating?..I got the water pump and thermostat replaced too..Also the motor stalls


Well kinda sounds like it has overheated quite a few times, so unfortuanetly it's heads are probably warped and head gskts are blown causing compression from cylinders to enter cooling system which causes high pressure in cooling system which in turn blows coolant out and end result...your enj. probably needs replacing ! Sorry for the Bad news

Feb 13, 2012 | 2004 Chevrolet TrailBlazer

1 Answer

03 mk4 vw golf 1.6 petrol 143000kms new tbelt and water pump and thermostat fitted 12 months ago. Fans running full time when engine is running. Overheats when engine is running at low speed ok at high...


Water pump is bad because overheats when engine is running at low speed, and good at high rev. The water pump impeller can not push the coolant with the required pressure.

Apr 19, 2011 | Volkswagen Golf Cars & Trucks

2 Answers

I have a 2004 chevy impala and i am having problems with it overheating. When it overheats the heater starts to blow cold air. Replaced the thermostat and had the coolants flushed. The car does not...


Hello and welcome to FixYa! If you have overheating problem, it can lead to multipleissues. You may be running on low coolant that's why the vehicle overheats. Ifthat's the case, please add coolant and make sure that it sits on the rightlevel, too much coolant can cause overheating too for coolant will overflow. The vehicle may have a faulty or worn out radiator blowermotor that's why it overheats. If that's the case then you will need a blowermotor replacement to resolve the issue. If the radiator is clogged with dirt and rusts this issueoccurs too. The coolant doesn't flow normally on the cooling system if it'sclogged. If that's the case, I strongly suggest that you have the radiatorflushed to drain out dirt and rusts. If you think that the radiator served youenough then it's better to have it replaced. Please do check the radiator hoses, If you have worn outhoses it can cause coolant leakage which can result to overheating. A tiny holeis good enough for the vehicle to overheat. A faulty thermostat sensor can cause the issue too. If youhave worn out thermostat, the fan may not trigger that's why the fan won't workwhen under stressed conditions. A blown radiator blower fuse can cause thisissue too so I suggest that you check the radiator blower fuse and replace itwhen necessary. What causes the radiator blower fan fuse to blow? It's becauseof a failing radiator blower motor, If that's the case have the radiator blowerfan motor replaced. If the fluid in radiator doesn't circulate then it meansthat you have a blown head gasket or a faulty water pump. I suggest that you gofor the water pump replacement first specially if you think that it's near theend of it's service life. Usually, water pops out the radiator when engine isreved (a sign of faulty water pump and possible blown head gasket). Hope you find this information helpful enough and thank youfor using FixYa! Have a good one!

Jan 16, 2011 | 2004 Chevrolet Impala

2 Answers

My car is rumming hot and the antifreeze is leaking I'm thinking it's my water pump


It could be the water pump , or something else , like a faulty thermostat. Where is the coolant leaking from ? If it is leaking from the water pump , then yes , your pump might be toast.
If the thermostat is no good , the engine will warm up to normal temp , and then overheat quite quickly. As it overheats and the coolant expands and boils , it could back up into the overflow reservoir and leak out onto the ground. You need to get someone to diagnose the problem ASAP , running your engine in an overheat condition could very quickly blow your head gasket and/or warp a cylinder head. If you can , please post a bit more info. Does it run but at a higher than normal temp. Does it only overheat when stopped in traffic etc.
Could be water pump , or thermostat , or plugged up radiator , or nonfunctioning cooling fans.

Nov 22, 2010 | Ford Taurus Cars & Trucks

3 Answers

How to tell if water pump for 04 cadillac srx needs to be replaced.


Your car will overheat very fast and you may either notice coolant leaking from the location of the pump and also possibly a squealing noise due to a bad bearing. Overheating can also be caused by a bad thermostat.

Feb 17, 2010 | 2004 Cadillac SRX

3 Answers

2004 kia optima overheating when in town driving. have to run heater for temperature to go back down. Shop told me the only thing wron is the drive belt and they couldn's get it to overheat. Eversince ive...


Classic signs of a bad water pump. When on the freeway, the circulation of coolant through the system is increased due to the speed but once you slow down, it will tend to overheat. Please post back with any other questions or just to rate the solution. Thanks very much!
Greg

Aug 10, 2009 | 2004 Kia Optima

1 Answer

Overheating/Loss of power


Unless water pump bearing is loose or noisy or the pump is leaking, that's not your problem. Have the system flushed. Thermostat is also likely not the problem but with repeated overheats or near-overheats it will become unreliable so change it as a precaution.

Jun 03, 2009 | 2004 Dodge Ram 1500

1 Answer

98 dodge ram overheating with no heat


Did you have your heater running when you refilled coolant after water pump changed?

Jan 20, 2009 | 1998 Dodge Ram 1500 4WD

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