How to tell if your gauge (temp) is bad?

momsvan
0

Asked by momsvan Jan 14, 2013 at 06:30 PM about the 2004 Chevrolet Venture LS

Question type: Maintenance & Repair

Have replaced thermostat and water pump. Engine gets hot but radiator stays cold. Can't tell if fans work. Tried running with AC on but fans still did not move. No air in lines. What do I do now?

7 Answers

dlww
30

Don't know about the cold radiator could need flushed. To check the fans unplug the temp sensor and the fans should come on automatically and continue to run until you plug the sensor back up. If they don't you may have a bad fuse or bad fans. If they do come on (hopefully) try replacing the temp sensor. Some cars have 2 temp sensors. One is for the gauge and the other is a switch to turn on the fans. If your gauge goes up and down it's probably ok if not change the sensor.

3 out of 3 people think this is helpful.
SNo Whyt
95

Sets to use to check your van when overheating occurs: 1. Open the radiator on the Venture after the van has cooled off and shine a flashlight into the radiator to check the coolant level. If the level is low, add the proper coolant/water mixture to fill the radiator. Crank the Venture's engine and run the vehicle until the coolant begins to circulate and check the level again. Using the flashlight, check the radiator tanks and the radiator hoses for leaks. 2. Check the radiator cap by removing it while the Venture is cool and observe it closely for rips, tears or bubbles, which may diminish a tight seal and allow steam or coolant to escape from the radiator. Replace the radiator cap and start the engine, then check for leaks around the cap once the vehicle begins to warm up. 3. Observe the front and rear of the Venture's radiator for any damage to the radiator's surface, including cracks, breaks and/or clogs from road debris. Areas of particular concern for cracks and breaks are the seams of the radiator and the hose connectors since the Venture uses a plastic radiator. Check the radiator while cool and again while running and warm. 4. Turn off the Venture and allow it to cool until the radiator can be touched by hand. Test the radiator by hand, feeling along the outside from top to bottom. If the radiator is warmer at the bottom, it is functioning properly. Use an infrared thermometer, running it along the surface of the radiator from top to bottom to make the same assessment. 5. Remove the Chevy Venture's radiator cap and attach a pressure tester to the top of the radiator, then attach the radiator cap to the pressure tester, which will test both the radiator and the radiator cap. 6. Squeeze the upper and lower hoses on the Chevy Venture, checking to see if the hoses are firm or soft. A firm hose is still in good condition, while a hose that is soft and easy to squeeze had more than likely been damaged. Ventures are known to over heat...always keep and eye on your guage and check your fuilds frequently.

1 out of 1 people think this is helpful.
tenspeed
53,385

"Have replaced thermostat and water pump. Engine gets hot but radiator stays cold." No one had addressed this yet. Either the thermostat is bad, the thermostat is up side down, or the water pump is not pumping. You're not going anywhere until that radiator is cooling the engine.

1 out of 1 people think this is helpful.
Louigi62000
0

did you replace fan clutch.? Louigi62000

califcarson
3,775

It sounds like a blockage somewhere. Thermostat in correctly? You should be able to tell if the fans are running. Shut off the motor, then turn the van back on but don't crank the motor. You should be able to hear the fans running. Check the connections if they are not. Fusees need replacing. If you have electric fans, there is no fan clutch. Is the water pump the correct one? There are two types, one goes one way, the other is reversed and pushes the liquid the other direction depending on the type of belt drive you have.

steveross68
30

to check your temp sensor start car and unplug the wire going to the sensor if the fan starts its probably working. you can also check the volts on the wires its pretty low voltage, 3 on cool engine and 5 on hot something like that. it will change with car temp,then its working,dont replace. i had my car overheat and did all this. it was the engine cooling fan.

2 out of 2 people think this is helpful.
davidu01
10

Actually, We have had this problem. All you have to do is loosen a bleeder valve on top of the engine to let the air out of the line. It seems the water pump just spins air otherwise. Solved our frustrating problem. (loosen while cool with engine running, tighten after coolant comes out.)

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Venture
Looking for a Used Venture in your area?
CarGurus has 1,123 nationwide Venture listings starting at $2,000.
ZIP:

Search Chevrolet Venture Questions

Chevrolet Venture Experts

#1 Tom Demyan
Tom Demyan
Reputation 370
#2 carGrrl
carGrrl
Reputation 230
#3 tenspeed
tenspeed
Reputation 180
View All

Related Models For Sale

Used Chevrolet Uplander"
99 Great Deals out of 1,899 listings starting at $1,999
Used Honda Odyssey"
491 Great Deals out of 24,617 listings starting at $1,795
Used Dodge Grand Caravan"
952 Great Deals out of 32,851 listings starting at $995
Used Pontiac Montana"
5 Great Deals out of 640 listings starting at $2,495
Used Nissan Quest"
101 Great Deals out of 3,122 listings starting at $2,000
Used Dodge Caravan"
56 Great Deals out of 1,705 listings starting at $1,495
Used Toyota Sienna"
454 Great Deals out of 22,898 listings starting at $2,000
Used Chrysler Town & Country"
1,151 Great Deals out of 37,374 listings starting at $1,000
Used Ford Mustang"
1,048 Great Deals out of 25,765 listings starting at $1,329
Used Chevrolet Impala"
1,732 Great Deals out of 59,304 listings starting at $995
Used Chevrolet Express Cargo"
239 Great Deals out of 6,661 listings starting at $2,200
Used Chevrolet Tahoe"
984 Great Deals out of 33,264 listings starting at $2,500
Used Buick Terraza"
15 Great Deals out of 335 listings starting at $2,495
Used Kia Sedona"
136 Great Deals out of 5,740 listings starting at $1,999
Used Ford Explorer"
958 Great Deals out of 51,032 listings starting at $800

Used Cars For Sale

2005 Chevrolet Venture LS For Sale
6 Great Deals out of 63 listings starting at $2,000