Question about 2001 Saturn L-Series

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Changed thermostat temperature sensor and fan modulator. Still overheating no heat

How hard is water pump

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If it's the2.2 , it's easy, as long as you buy a water pump holder. The water pump is internally driven bdesperate chain . The holder ,and the 4 bolts that cover the pump are used to hold the chain out of the way so you can change it.I If you aren't comfortable with the possibility of dropping the water pump chain down into the front if the engine, pay a pro. It's easy, but the possibility of turning a 100.00 job into a 800.00 is there.

Posted on Dec 15, 2014

  • James Meeker Jr.
    James Meeker Jr. Dec 15, 2014

    How to check water pump

  • J.Renner Dec 15, 2014

    You really can't. The back pipe that fits into the water pump is a rigid pipe that has a compression ring.

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1 Answer

Why would my 2001 voyager be over heating changed fans and fans wont kick on


Hi Tina-
In general, assuming you have the proper levels of coolant in the system, the next item to check is the thermostat. It is held in a metal housing bolted to the top of the engine block at the end of the upper radiator hose. This controls the temperature of the coolant in your cooling system. Not operating correctly, it would not allow the hot water in your engine to properly flow to the radiator to be cooled and cause overheating.
If your fan is not coming on at all, it may be that the temperature sensor they are connected to is faulty. The sensor turns on the fans once the coolant reaches a certain temperature. If the sensor is bad, the fans will not turn on regardless of the coolant temperature.
Lastly, if the water pump itself is bad (not circulating the coolant), this will cause overheating. Usually, a bad water pump will begin to show itself as a puddle underneath your car-since bad seals or bearing will cause it to fail this way-but I have also seen where poor maintenance of the coolant itself (not being flushed and changed at required intervals) have allowed deposits in the system to wear the blades inside the pump and reduced its effectiveness.
Hope this helps!

Apr 01, 2014 | 2001 Chrysler Voyager

1 Answer

Overheating new heater core, radiator, thermostat, fan module


This problem is caused by the coolant temperature sensor and this will cause you to think the car overheated but the gauge isn't working properly as supposed to

Mar 23, 2014 | 2001 Saturn L-Series

1 Answer

2000 daewoo leganza is overheating, leaking anti freeze, and water. what is wrong?


sound like thermostat sticking close.replace thermostat and radiator pressure cap.if already done.you could have faulty water pump.if engine overheating at long slow traffic line or setting at a stand still.the engine cooling fans should be running, check and see if cooling fans running if not,check cooling fans fuses and relays.if all is good,hot wire make sure coolings fans okay.if all is good,code scan vechicle for faulty engine coolant temperature sensor and ecm problems.you need a code scanner where you can check live data check see if coolant temperature sensor reading correctly if engine coolant temperature is 190 degrees the coolant sensor. the scanner suppose to show 190 degrees in temperature if not it reads 80 or 90 degrees the engine coolant temperature sensor is faulty need replacing.if all is good check engine oil if look like milk shake blow head gasket will cause over heating.to be on the safe side i would replace thermostat and radiator pressure cap first.to make sure engine coolant circulating through radiator and engine block.

Nov 15, 2011 | 2000 Daewoo Leganza

2 Answers

97 saturn is overheating i changed the temp sen and still over heat if i unplug it the fan comes on can i drive with it un pluged


You might have changed the wrong sensor. There are two. The cooling fan sensor will be closer to the radiator, either plugged into the radiator or the thermostat housing. One sensor is for the temp gauge and the other is for the cooling fan, good luck.

Aug 31, 2011 | Saturn SC1 Cars & Trucks

1 Answer

Van overheating when stuck in traffic fan not coming on changed two sensors engine temperature and temperature controlno change. Fan does work when put power to it externally. Van still overheating when...


u should check for a faulty thermostat first, they are only a few quid and easily replaced. if no change ur most likely faults are a blocked radiator or faulty water pump. u dont sayhow old ur van is but after the thermostat go to the radiator, when its hot check the bottom of the rad to make sure its hot, also brown water means u need to bback flush ur cooling system. even tho u have changed some sensors doesnt mean u got the fan switch sender, dash board sender and fan sender tend to be different sensors, so just double check.

Jul 04, 2010 | 1992 Plymouth Grand Voyager

1 Answer

My 1999 dodge neon is overheating and just changed water pump and thermostat radiator. No leaks and no water in oil. Changed thermostat again and same problem . How can you tell if water pump is bad and...


Last time I had this problem I had a cracked head. With the cap off the radiator, run the engine at idle to operating temperature. When your looking in the radiator you should see the water circulating if the water pump is working. When you say the motor is over heating, if you have fluid coming out of the over flow hose then yes you are most likely overheating, if you are just seeing the gauge indicate you are over heating you may just have a bad engine temp sensor.

Jun 26, 2010 | 1999 Dodge Neon

1 Answer

My 99 cavalier is overheating i have changed head, gasket, radiator, fan, and have no thermostat, is it absolutely necessary to have one in the system


During the summer, you can run without a thermostat without any significant problems. In cold weather however, having no thermostat will prevent your car from warming up to normal operating temperature in a reasonable period of time, which will put additional stress on the engine and reduce your gas mileage substantially. You will also get virtually no heat to the passenger compartment. Two things you should check in regards to overheating: Is your water pump working and does your radiator fan switch on when the temperature rises above @190 degrees? If the vehicle has over 100,000 miles on it, you might as well replace the pump now. Don't use a rebuilt pump. They are ****. Get a new pump and a good quality thermostat. If the fan doesn't come on when it should, you probably need an new fan switch/sensor. These are inexpensive and easy to replace. Also check for signs of damage to the wiring leading to this sensor, and check the fan fuse and relay. Finally, make sure that your antifreeze mix is no more than 70% antifreeze to water for winter weather, or 70% water to antifreeze in summer. 50/50 is a good bet for year-round reliability, but a higher % water will tend to cool the engine more efficiently. Having said all that, I suspect your water pump is the main problem. If you notice a slow drip of coolant near the pump, you can be almost certain it has failed.

Dec 19, 2009 | 1999 Chevrolet Cavalier

2 Answers

Aloha,have 98 base mustang, overheating after many replacements


i would change the water pump and check for plugs in the heater core

Sep 26, 2009 | 1998 Ford Mustang

1 Answer

Overheating 97 V6 pontiac grand am


1 Inspect Cooling System Mix Coolant level low or flow is restricted. grey_line.gif 2 Inspect Belt Incorrectly routed, adjusted, tensioned, missing, or worn water pump belt(s). grey_line.gif 3 Inspect Oil Pan Gasket - Performance Ruptured, cracked or leaking radiator hose. grey_line.gif 4 Inspect Radiator Cap Worn or damaged radiator cap grey_line.gif 5 Inspect Thermostat Thermostat stuck closed grey_line.gif 6 Inspect Fan Blade Broken, missing, or defective fan blade(s). grey_line.gif 8 Inspect Water Pump Damaged, worn or leaking water pump. grey_line.gif 9 Inspect Intake Manifold Plenum - Perform Leaking water pump gasket. grey_line.gif 10 Inspect Cooling Fan Control Faulty cooling fan control or circuit. grey_line.gif 11 Inspect Cooling Fan Switch - Radiator Faulty radiator cooling fan switch or circuit. grey_line.gif 12 Inspect Engine Temperature Sensor Faulty engine temperature sensor or circuit. grey_line.gif 13 Inspect Temperature Switch Damaged or faulty temperature switch or temperature switch circuit. grey_line.gif 14 Inspect Fan Clutch Worn, loose or faulty fan clutch. grey_line.gif 15 Inspect Ported Vacuum Switch Damaged, leaking, or faulty ported vacuum switch. grey_line.gif 16 Inspect Radiator Obstructed radiator core or radiator cooling fins. grey_line.gif 17 Inspect Head Gasket - Performance Head gasket leaking coolant into cylinders

Dec 01, 2008 | 1997 Pontiac Grand Am

1 Answer

Car is overheating


2 Inspect Belt Incorrectly routed, adjusted, tensioned, missing, or worn water pump belt(s). grey_line.gif 3 Inspect Oil Pan Gasket - Performance Ruptured, cracked or leaking radiator hose. grey_line.gif 4 Inspect Radiator Cap Worn or damaged radiator cap grey_line.gif 5 Inspect Thermostat Thermostat stuck closed grey_line.gif 6 Inspect Fan Blade Broken, missing, or defective fan blade(s). grey_line.gif 8 Inspect Water Pump Damaged, worn or leaking water pump. grey_line.gif 9 Inspect Intake Manifold Plenum - Perform Leaking water pump gasket. grey_line.gif 10 Inspect Cooling Fan Control Faulty cooling fan control or circuit. grey_line.gif 11 Inspect Cooling Fan Switch - Radiator Faulty radiator cooling fan switch or circuit. grey_line.gif 12 Inspect Engine Temperature Sensor Faulty engine temperature sensor or circuit. grey_line.gif 13 Inspect Temperature Switch Damaged or faulty temperature switch or temperature switch circuit. grey_line.gif 14 Inspect Fan Clutch Worn, loose or faulty fan clutch. grey_line.gif 15 Inspect Ported Vacuum Switch Damaged, leaking, or faulty ported vacuum switch. grey_line.gif 16 Inspect Radiator Obstructed radiator core or radiator cooling fins. grey_line.gif 17 Inspect Head Gasket - Performance Head gasket leaking coolant into cylinders here is a list of things to check Shaun

Nov 17, 2008 | 2000 Cadillac DeVille

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