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How to Replace Coolant Temperature Sensor 81-05 Chevy Monte Carlo

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How to Replace Coolant Temperature Sensor 81-05 Chevy Monte Carlo

Created on: 2014-07-08

Watch this video to learn how to fix your coolant temperature sensor. The experts at 1A Auto show you how to replace the sensor on your 00-08 Chevy Monte Carlo.

  1. step 1 :Removing the Temperature Sensor (With a Deep Socket)
    • Disconnect the temperature sensor wiring harness
    • If a deep 19mm socket is available, remove the temperature sensor and proceed to Step 4
  2. step 2 :Removing the Air Intake Hose
    • Pull the smaller hose out of the air intake hose
    • Disconnect the intake hose wiring harness
    • Loosen the two intake hose clamps with a flat blade screwdriver
    • Separate the intake hose from the engine
    • Separate the intake hose from the air intake box
  3. step 3 :Removing the Throttle Body
    • Remove he two 10mm bolts from the throttle body bracket
    • Remove the 10mm nut from the throttle body bracket
    • Pull the throttle body bracket aside
    • Disconnect the throttle body wiring harnesses
    • Loosen the throttle body hose clamps with pliers
    • Pull the hoses off the throttle body
    • Remove the 13mm nut from the throttle body
    • Remove the 13mm bolt from the throttle body
    • Remove the 13mm stud from the throttle body
    • Disconnect the cable from the throttle body
    • Pull the throttle body up and out
  4. step 4 :Replacing the Temperature Sensor (Without a Deep Socket)
    • Disconnect the temperature sensor wiring harness, if you have not already done so
    • Remove the temperature sensor, if you have not already done so, with a 19mm wrench
    • Quickly thread the new sensor into place
    • Tighten the new sensor with a 19mm wrench or a 19mm socket and ratchet
    • Reconnect the sensor wiring harness
    • If you did not use the deep socket, continue to the following steps
  5. step 5 :Reinstalling the Throttle Body
    • Start the upper 13mm bolt into the throttle body
    • Clip the cable to the throttle body
    • Push the throttle body into place
    • Tighten the top 13mm bolt
    • Insert the 13mm stud into the throttle body
    • Push the hoses onto the throttle body
    • Tighten the hose clamps with pliers
    • Fasten the 13mm nut onto the throttle body
    • Put the throttle body bracket into place
    • Insert the two 10mm bolts into the throttle body bracket
    • Fasten the 10mm nut onto the throttle body bracket
    • Connect the throttle body wiring harnesses
  6. step 6 :Reinstalling the Air Intake Hose
    • Push the intake hose onto the air intake box
    • Push the intake hose onto the throttle body
    • Tighten the intake hose clamps with a flat blade screwdriver
    • Connect the smaller hose to the intake hose
    • Connect the intake hose wiring harness
    • Clip the intake hose wiring to its bracket

Tools needed for replacement

  • Pliers, Cutters & misc Wrenches

    Slip-Joint Pliers

  • Ratchets & Related

    Ratchet

  • Screwdrivers & Related

    Flat Blade Screwdriver

  • Sockets - Metric

    13mm Socket

    19mm Socket

    10mm Socket

  • Wrenches - Metric

    19mm Wrench

Installation Video
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Brought to you by 1AAuto.com, your source for quality replacement parts and the best service on the Internet.

Hi, I'm Mike from 1A Auto. I hope this how-to video helps you out, and next time you need parts for your vehicle, think of 1AAuto.com. Thanks.

In this video, we're going to show you how to replace the coolant temperature sensor on this 2003 Chevy Monte Carlo with the 3.4 liter V6 engine, and the items you'll need for this, is a 19 millimeter deep socket and ratchet, and If you don't have one of those, it's going to be a slightly different procedure, and you're going to need a 10 and 13 millimeter socket and ratchet, a flat-blade screw driver, a pair of pliers, and a 19 millimeter wrench.

Your coolant temperature sensor is right down in here. You can actually get to it if you move this. You can reach your hand in. There is a tab on top, you can grab hold of with your finger and disconnect it. If you have a deep 19 millimeter socket, you can change it out without even having to remove the throttle-body, if you don't have that socket, we're going to show you real quick how to remove the throttle-body.

Now, just pull up on this hose and disconnect this harness, and then loosen up these two hose clamps. Pull this hose free from the engine, and then pull this hose free from your intake box, and just set that aside.

Next, remove those two ten millimeter bolts and this ten millimeter nut, right here. Now, pull this bracket down and set it aside, and then, pull out on this harness and pull it free. Do the same with this harness, and then push the tabs together on this hose clamp and slide it back. Do the same for the hose clamp on the other side. Now, just push that hose back, and then remove that 13 millimeter nut right there and then you want to remove that 13 millimeter bolt and this 13 millimeter stud bolt right here. We'll fast forward as Mike does that. Now, pull up this cable, and you want to just disconnect it from the top here, and then just lift the throttle body up and out. Lift up on the tab and disconnect the harness. Using your 19 millimeter wrench loosen up the sensor.

Once it gets to the point where you can pull it free, have the other one ready. Pull the old sensor free, and immediately push your new sensor into place and twist it in. We'll just fast forward as Mike tightens that up. Now, reconnect your harness. Take your throttle-body with the upper bolt in place and take this bracket and re-clip the wire to the top of the throttle-body, and then just run it down the track. Then, push the throttle-body back into place. Just tighten up this bolt. We will fast forward as Mike replaces the other bolts that hold the throttle-body into place, and tightens them up.

Now, push these hoses back on to this line, and just push the teeth together on the hose clamps and slide them back down into place. Then, we'll fast forward as Mike replaces the nut that holds that line into place and tightens it up. Now, take this bracket, and put it back into place, and replace the nut and two bolts that hold it into place. Re connect your harnesses, and then take your intake hose and push it back onto mass airflow sensor first, and then down onto the throttle-body. Then, just tighten up those hose clamps; you want to make sure the hose is all the way on before you do that. When you disconnected this line earlier, there's a good chance that it came free from back here, so just make sure that when you reconnect it up here that it's still connected back behind the engine there, and it just pushes right back into place. Now, reconnect this harness, and re-clip this to this bracket, and you're all set.

We hope this video helps you out. Brought to you by www.1AAuto.com, your source for quality replacement parts and the best service on the Internet. Please feel free to call us toll-free, 888-844-3393. We're the company that's here for you on the Internet and in person.

Tools needed for replacement:

    Pliers, Cutters & misc Wrenches

  • Slip-Joint Pliers

  • Ratchets & Related

  • Ratchet

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Sockets - Metric

  • 13mm Socket
  • 19mm Socket
  • 10mm Socket

  • Wrenches - Metric

  • 19mm Wrench

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1988 - 1995  Chevrolet  S10 Pickup
1986 - 1993  Chevrolet  S10 Pickup
1994 - 2002  Chevrolet  S10 Pickup
1985 - 1985  Chevrolet  S10 Pickup
1988 - 1994  Chevrolet  Blazer S10
1994 - 2000  Chevrolet  S10 Pickup
2003 - 2003  Chevrolet  S10 Pickup
2000 - 2002  Chevrolet  S10 Pickup
1985 - 1991  Chevrolet  S10 Pickup
1991 - 1993  Chevrolet  S10 Pickup
1983 - 1984  Chevrolet  Blazer S10
1984 - 1984  Chevrolet  Blazer S10
1986 - 1990  Chevrolet  Blazer S10
1983 - 1985  Chevrolet  Blazer S10
1985 - 1988  Chevrolet  Blazer S10
1995 - 1999  Chevrolet  Tahoe
1995 - 1995  Chevrolet  Tahoe
1996 - 2000  Chevrolet  Tahoe
1986 - 1988  Chevrolet  Spectrum
1987 - 1988  Chevrolet  Spectrum
1985 - 1985  Chevrolet  Spectrum
1986 - 1986  Chevrolet  Sprint
1990 - 1993  Geo  Storm
1990 - 1990  Geo  Storm
1992 - 1993  Geo  Storm
1991 - 1991  Geo  Storm
2004 - 2005  Chevrolet  Impala
1982 - 1982  Chevrolet  Celebrity
1994 - 1996  Chevrolet  Camaro
1985 - 1985  Chevrolet  Celebrity
2000 - 2005  Chevrolet  Venture
1979 - 1979  GMC  Caballero
1980 - 1980  GMC  Caballero
1985 - 1987  GMC  Caballero
1985 - 1991  GMC  Jimmy
1985 - 1986  GMC  Jimmy
1987 - 1991  GMC  Jimmy
1985 - 1987  GMC  Jimmy
1985 - 1985  GMC  Jimmy S-15
1986 - 1989  GMC  Jimmy S-15
1985 - 1988  GMC  Jimmy S-15
1986 - 1994  GMC  Safari
1985 - 1990  GMC  Safari
1996 - 2004  GMC  S-15 Sonoma
1991 - 1995  GMC  S-15 Sonoma
1991 - 1993  GMC  S-15 Sonoma
1992 - 2002  GMC  S-15 Sonoma
1991 - 1991  GMC  S-15 Sonoma
2002 - 2005  GMC  Safari
1992 - 2001  GMC  Safari
1985 - 1985  GMC  Safari
1990 - 1991  GMC  Safari
1985 - 1990  GMC  S-15 Pickup
1985 - 1985  GMC  S-15 Pickup
1986 - 1990  GMC  S-15 Pickup
1988 - 1990  GMC  S-15 Pickup
1994 - 2000  GMC  S-15 Sonoma
2003 - 2003  GMC  S-15 Sonoma
2000 - 2002  GMC  S-15 Sonoma
1996 - 2002  GMC  Savana 1500 Van
2003 - 2006  GMC  Savana 1500 Van
1998 - 2002  GMC  Savana 3500 Van
1996 - 1997  GMC  Savana 3500 Van
1996 - 1997  GMC  Savana 2500 Van
1997 - 1997  GMC  Savana 3500 Van
2006 - 2006  GMC  Savana 2500 Van
1998 - 1998  GMC  Savana 3500 Van
2006 - 2006  GMC  Savana 3500 Van
1998 - 2000  GMC  Savana 3500 Van
2001 - 2002  GMC  Savana 3500 Van
2007 - 2007  Cadillac  Escalade ESV
2003 - 2006  Cadillac  Escalade ESV
2003 - 2006  Cadillac  Escalade EXT
2007 - 2007  Cadillac  Escalade EXT
1989 - 1989  Chevrolet  R3500 Truck
1989 - 1989  Chevrolet  R2500 Truck
1989 - 1991  Chevrolet  V3500 Truck
1987 - 1988  Chevrolet  R2500 Truck
1989 - 1989  Chevrolet  V3500 Truck
1987 - 1988  Chevrolet  R3500 Truck
2001 - 2004  Chevrolet  Silverado 3500
2004 - 2006  Chevrolet  Silverado 3500
2006 - 2006  Chevrolet  Silverado 3500
1999 - 2000  Chevrolet  Silverado 2500
1999 - 2002  Chevrolet  Silverado 1500
1987 - 1987  Chevrolet  V2500 Truck
1992 - 2002  GMC  C3500 Truck
1987 - 1987  Chevrolet  V1500 Truck
1987 - 1987  Chevrolet  R2500 Truck
1987 - 1987  Chevrolet  R1500 Truck
1987 - 1988  Chevrolet  V3500 Truck
1994 - 1998  GMC  K2500 Truck
1994 - 1998  GMC  K1500 Truck
1996 - 1998  GMC  K2500 Truck
1997 - 1997  GMC  K1500 Truck
1994 - 1996  GMC  C1500 Truck
1997 - 1997  GMC  C1500 Truck
1988 - 1995  GMC  C1500 Truck
1988 - 1995  GMC  C3500 Truck
1991 - 1995  GMC  C2500 Truck
1988 - 1995  GMC  C2500 Truck
1985 - 1995  GMC  C2500 Truck
1998 - 1998  GMC  C3500 Truck
1996 - 1998  GMC  K1500 Truck
1987 - 1991  GMC  R3500 Truck
1987 - 1988  GMC  R3500 Truck
1987 - 1989  GMC  R3500 Truck
1987 - 1987  GMC  V1500 Truck
1987 - 1987  GMC  V2500 Truck
1987 - 1988  GMC  V3500 Truck
1987 - 1991  GMC  V3500 Truck
1987 - 1989  GMC  V3500 Truck
1999 - 2002  GMC  Sierra 1500
1987 - 1987  GMC  R1500 Truck
1987 - 1987  GMC  R2500 Truck
1987 - 1988  GMC  R2500 Truck
1987 - 1989  GMC  R2500 Truck
1985 - 1993  GMC  C2500 Truck
1985 - 1993  GMC  C1500 Truck
1994 - 1994  GMC  K2500 Truck
1994 - 1994  GMC  K1500 Truck
1985 - 1993  GMC  C3500 Truck
1985 - 1993  GMC  K1500 Truck
1988 - 1995  GMC  K3500 Truck
1994 - 1994  GMC  C1500 Truck
1994 - 1994  GMC  C2500 Truck
1988 - 1995  GMC  K1500 Truck
1985 - 1995  GMC  K1500 Truck
1991 - 1995  GMC  K2500 Truck
1988 - 1995  GMC  K2500 Truck
1996 - 2000  GMC  K2500 Truck
1992 - 2000  GMC  K2500 Truck
1996 - 2000  GMC  C2500 Truck
1992 - 2000  GMC  C2500 Truck
1992 - 2000  Chevrolet  K2500 Truck
1996 - 2000  Chevrolet  K2500 Truck
1996 - 2000  GMC  C3500 Truck
1996 - 2000  Chevrolet  K3500 Truck
1992 - 2000  Chevrolet  K3500 Truck
1996 - 1999  Chevrolet  C1500 Truck
1996 - 1999  Chevrolet  K1500 Truck
2002 - 2005  GMC  Sierra 1500
2004 - 2005  GMC  Sierra 3500
2001 - 2004  GMC  Sierra 3500
1994 - 1998  Chevrolet  C2500 Truck
1996 - 1998  Chevrolet  C2500 Truck
1996 - 1998  Chevrolet  C1500 Truck
1997 - 1998  Chevrolet  C1500 Truck
1996 - 1998  GMC  C2500 Truck
1994 - 1998  GMC  C2500 Truck
1996 - 1998  Chevrolet  K2500 Truck
1994 - 1998  Chevrolet  K2500 Truck
1996 - 1998  GMC  C1500 Truck
1994 - 1998  Chevrolet  K1500 Truck
1997 - 1998  Chevrolet  K1500 Truck
1996 - 1998  Chevrolet  K1500 Truck
1996 - 1999  GMC  K1500 Truck
1994 - 1995  Chevrolet  C1500 Truck
1988 - 1995  Chevrolet  C1500 Truck
1994 - 1996  Chevrolet  C1500 Truck
1996 - 1999  GMC  C1500 Truck
1996 - 2000  GMC  K3500 Truck
1992 - 2000  GMC  K3500 Truck
1985 - 1986  Chevrolet  K30 Truck
1985 - 1985  Chevrolet  C10 Truck
1985 - 1986  Chevrolet  K20 Truck
1985 - 1985  Chevrolet  K20 Truck
1985 - 1985  Chevrolet  K30 Truck
1985 - 1986  Chevrolet  C20 Truck
1985 - 1986  Chevrolet  C10 Truck
1986 - 1986  Chevrolet  C30 Truck
1985 - 1986  Chevrolet  C30 Truck
1985 - 1986  Chevrolet  K10 Truck
1989 - 1993  Chevrolet  C2500 Truck
1988 - 1993  Chevrolet  C2500 Truck
1988 - 1993  Chevrolet  K2500 Truck
1989 - 1993  Chevrolet  K2500 Truck
1988 - 1993  Chevrolet  K3500 Truck
1988 - 1993  Chevrolet  C3500 Truck
1988 - 1993  Chevrolet  K1500 Truck
1988 - 1995  Chevrolet  C2500 Truck
1994 - 1995  Chevrolet  C2500 Truck
1991 - 1995  Chevrolet  C2500 Truck
1991 - 1995  Chevrolet  K2500 Truck
1994 - 1995  Chevrolet  K2500 Truck
1988 - 1995  Chevrolet  K2500 Truck
1988 - 1995  Chevrolet  K3500 Truck
1988 - 1995  Chevrolet  C3500 Truck
1988 - 1995  Chevrolet  K1500 Truck
1994 - 1995  Chevrolet  K1500 Truck
1990 - 1993  Chevrolet  C1500 Truck
1988 - 1993  Chevrolet  C1500 Truck
1989 - 1991  Chevrolet  R3500 Truck
1996 - 2000  Chevrolet  C2500 Truck
1992 - 2000  Chevrolet  C2500 Truck
1996 - 2000  Chevrolet  C3500 Truck
1992 - 2002  Chevrolet  C3500 Truck
1985 - 1995  GMC  C1500 Truck
1985 - 1986  GMC  C1500 Truck
1985 - 1993  GMC  K3500 Truck
1985 - 1993  GMC  K2500 Truck
1986 - 1986  GMC  C3500 Truck
1985 - 1986  GMC  C3500 Truck
1985 - 1986  GMC  C2500 Truck
1985 - 1985  GMC  K2500 Truck
1985 - 1986  GMC  K1500 Truck
1985 - 1986  GMC  K2500 Truck
1985 - 1986  GMC  K3500 Truck
1985 - 1996  Chevrolet  Corvette
1996 - 2005  GMC  Savana 2500 Van
1996 - 2002  GMC  Savana 2500 Van
1985 - 1986  Chevrolet  Suburban C10
1992 - 1995  Chevrolet  Suburban C1500
1996 - 1999  Chevrolet  Suburban C1500
1995 - 1999  Chevrolet  Suburban C1500
1985 - 1986  Chevrolet  Suburban C20
1992 - 1995  Chevrolet  Suburban C2500
1996 - 1999  Chevrolet  Suburban C2500
1994 - 1999  Chevrolet  Suburban C2500
1997 - 1999  Chevrolet  Suburban C2500
1985 - 1985  Chevrolet  Suburban K10
1985 - 1986  Chevrolet  Suburban K10
1992 - 1995  Chevrolet  Suburban K1500
1996 - 1999  Chevrolet  Suburban K1500
1995 - 1999  Chevrolet  Suburban K1500
1985 - 1986  Chevrolet  Suburban K20
1985 - 1985  Chevrolet  Suburban K20
1992 - 1995  Chevrolet  Suburban K2500
1996 - 1999  Chevrolet  Suburban K2500
1994 - 1999  Chevrolet  Suburban K2500
1997 - 1999  Chevrolet  Suburban K2500
1987 - 1987  Chevrolet  Suburban R10
1987 - 1988  Chevrolet  Suburban R10
1989 - 1991  Chevrolet  Suburban R1500
1987 - 1988  Chevrolet  Suburban R20
1989 - 1991  Chevrolet  Suburban R2500
1987 - 1988  Chevrolet  Suburban V10
1989 - 1991  Chevrolet  Suburban V1500
1987 - 1988  Chevrolet  Suburban V20
1989 - 1991  Chevrolet  Suburban V2500
1990 - 1990  Chevrolet  Suburban V2500
2001 - 2004  Chevrolet  Silverado 2500 HD
2004 - 2006  Chevrolet  Silverado 2500 HD
2006 - 2006  Chevrolet  Silverado 2500 HD
2004 - 2005  GMC  Sierra 2500 HD
2001 - 2004  GMC  Sierra 2500 HD
1986 - 1986  Isuzu  Trooper II
1991 - 1991  Isuzu  Trooper II
2000 - 2000  GMC  Yukon XL 2500
1985 - 1986  GMC  Suburban C1500
1992 - 1995  GMC  Suburban C1500
1996 - 1999  GMC  Suburban C1500
1995 - 1999  GMC  Suburban C1500
1985 - 1986  GMC  Suburban C2500
1992 - 1995  GMC  Suburban C2500
1996 - 1999  GMC  Suburban C2500
1994 - 1999  GMC  Suburban C2500
1985 - 1985  GMC  Suburban K1500
1992 - 1995  GMC  Suburban K1500
1985 - 1986  GMC  Suburban K1500
1996 - 1999  GMC  Suburban K1500
1995 - 1999  GMC  Suburban K1500
1985 - 1986  GMC  Suburban K2500
1992 - 1995  GMC  Suburban K2500
1996 - 1999  GMC  Suburban K2500
1985 - 1985  GMC  Suburban K2500
1994 - 1999  GMC  Suburban K2500
1987 - 1987  GMC  Suburban R1500
1987 - 1991  GMC  Suburban R1500
1987 - 1991  GMC  Suburban R2500
1987 - 1991  GMC  Suburban V1500
1987 - 1991  GMC  Suburban V2500
2007 - 2007  Chevrolet  Silverado 1500 Classic
2002 - 2006  Chevrolet  Silverado 1500
1985 - 1986  Chevrolet  G10
1987 - 1995  Chevrolet  G10
1985 - 1995  Chevrolet  G10
1987 - 1993  Chevrolet  G10
1985 - 1986  Chevrolet  G30
1987 - 1995  Chevrolet  G30
1985 - 1985  Chevrolet  G30
1987 - 1996  Chevrolet  G30
1985 - 1988  Chevrolet  G30
1985 - 1993  Chevrolet  G30
1994 - 1996  Chevrolet  G30
1988 - 1996  Chevrolet  G30
1987 - 1995  Chevrolet  G20
1985 - 1986  Chevrolet  G20
1985 - 1995  Chevrolet  G20
1985 - 1993  Chevrolet  G20
1985 - 1985  Chevrolet  G20
1994 - 1995  Chevrolet  G20
1985 - 1986  GMC  G2500
1987 - 1995  GMC  G2500
1985 - 1995  GMC  G2500
1985 - 1986  GMC  G1500
1987 - 1993  GMC  G1500
1985 - 1995  GMC  G1500
1987 - 1995  GMC  G1500
1988 - 1996  GMC  G3500
1994 - 1996  GMC  G3500
1985 - 1993  GMC  G3500
1992 - 1992  GMC  G3500
1985 - 1988  GMC  G3500
1985 - 1986  GMC  G3500
1987 - 1996  GMC  G3500
1994 - 1995  GMC  G2500
1985 - 1993  GMC  G2500
2007 - 2007  Cadillac  STS
2007 - 2007  Cadillac  XLR
1980 - 1980  Oldsmobile  Cutlass Salon
1985 - 1987  Oldsmobile  Cutlass Salon
1985 - 1985  Oldsmobile  Cutlass Salon
1990 - 1991  Oldsmobile  Cutlass Supreme
1988 - 1989  Oldsmobile  Cutlass Supreme
1993 - 1995  Oldsmobile  Cutlass Supreme
1989 - 1993  Oldsmobile  Cutlass Supreme
1991 - 1996  Oldsmobile  Cutlass Supreme
1990 - 1990  Oldsmobile  Cutlass Supreme
1985 - 1987  Pontiac  T1000
1992 - 1994  Chevrolet  Blazer S10
1995 - 2002  Chevrolet  Blazer
2003 - 2005  Chevrolet  Blazer
1994 - 2004  Cadillac  Seville
1993 - 2003  Cadillac  Seville
1993 - 1997  Pontiac  Firebird
1988 - 1991  GMC  Jimmy S-15
1992 - 2001  GMC  Jimmy
1992 - 1994  GMC  Jimmy

How to Properly Bleed Engine Cooling System by yourself

How to Properly Bleed Engine Cooling System by yourself

Watch this video to learn how to bleed your engine cooling system. The experts at 1A show you how to bleed the air bubbles from your radiator and cooling system.

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