Question about 1999 Land Rover Discovery

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How do i remove the heater defroster kit and

How do i remove the heater defroster kit and gasket from the bottom of throttle body

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Loosen the clips holding the coolant hoses and release them, remove the throttle body by undoing the 4 bolts holding it to the plenum chamber. Discard the gasket & fit a new one on refit. (This is after removing the intake hose, and disconnecting the throttle & cruise control cables. Then undoing the clip securing the breather hose and the multiplug).

Posted on Feb 25, 2010

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I have a 2002 GMC Envoy, the idle goes up/down & wants to die out when using the defrost/fan during the start up/idle. Is it a vacuum line somewhere?


Common problem after the battery is unhooked or replaced. You'll get the same results if you turn the AC on also...Unhook the battery, clean your throttle body, with throttle body cleaner (Seafoam works good) with only a rag or plastic bristled brush, no metal as it will scratch it. I prefer to remove the throttle body (4 bolts) to clean both sides, you CAN reuse the hard plastic gasket. When finished, hook the battery back up and drive around for 15 min or so (with no defrost or AC on,everything off), for the computer to relearn the newly cleaned TB. Your problem will be solved for about $8 if you do it yourself.

Oct 16, 2014 | 2002 GMC Envoy

1 Answer

Throttle body sensor location 2005 uplander


the sensor is part of the throttle body and not replaceable here is the throttle body replacement instructions as you will have to replace the entire throttle body it is a very common issue with these
THROTTLE BODY ASSEMBLY REPLACEMENT

REMOVAL PROCEDURE
  1. Remove the air cleaner intake duct.
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  1. Disconnect the electronic throttle control (ETC) electrical connector (1) from the throttle body (2).
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  1. Remove the heater pipe nut at the throttle body.
  2. Remove only the heater inlet pipe.
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  1. Remove the nuts and the bolts from the throttle body.
  2. Remove the throttle body assembly.
  3. Remove the throttle body gasket.
  4. Clean and inspect the throttle body gasket mating surfaces.
NOTE: Do not use solvent of any type when cleaning the gasket surfaces on the intake manifold and the throttle body assembly, as damage to the gasket surfaces and throttle body assembly may result.

Use care in cleaning the gasket surfaces on the intake manifold and the throttle body assembly, as sharp tools may damage the gasket surfaces.

INSTALLATION PROCEDURE
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  1. Install a new gasket, if necessary.
  2. Install the throttle body assembly.
  3. Install the throttle body nuts and the bolts.
NOTE: Refer to Fastener Notice in Service Precautions.

Tighten the nuts and the bolts to 10 N.m (89 lb in) .
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  1. Install the heater inlet pipe.
  2. Install the heater pipe nut to the throttle body.
Tighten the nut to 25 N.m (18 lb ft) .
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  1. Connect the ETC electrical connector (1) to the throttle body (2).
  2. Install the air cleaner intake duct.

Feb 03, 2014 | 2005 Chevrolet Uplander

1 Answer

My 2005 envoy stalls when i run the heater and a/c


It will tend to stall when you have the A/C on and or the defrost, not the heater correct? The defrost uses the A/C to dry the air. The battery was probably disconnected or changed recently. Clean your throttle body with throttle body cleaner while the battery is disconnected. When finished, drive around for 5 miles or so with the A/C and Defroster off. Your computer will relearn the the newly cleaned throttle body. This will fix this very common problem. Will cost you about 7 bucks for the cleaner and you're gas mileage will be better.

Dec 24, 2010 | 2002 GMC Envoy

1 Answer

Thermostat replacement 2002 rendezvous


Thermostat Removal & Installation 3.4L & 3.5L Engine To Remove:
  1. Drain the coolant below the level of the thermostat.
  2. Remove the air cleaner and duct assembly.
  3. Remove the exhaust crossover pipe.
  4. Disconnect the radiator hose from the thermostat housing. gm_mv_ven_tstat.gif

  5. Remove the mounting bolts and remove the thermostat housing.
  6. Remove the housing gasket.
  7. Remove the thermostat.
  8. Clean the mating surfaces.
To Install:
  1. Install the thermostat on the engine. NOTE: Apply RTV sealer to the thermostat housing bolt threads.
  2. Install the thermostat housing and gasket with the mounting bolts. Tighten 18 ft-lb (25 Nm).
  3. Connect the radiator hose to the thermostat housing.
  4. Install the exhaust crossover pipe.
  5. Install the air cleaner and duct assembly.
  6. Fill the cooling system.
  7. Check the cooling system for leaks.
3.6L Engine To Remove:
  1. Remove the air cleaner.
  2. Remove the throttle body.
  3. Remove the heater pipes.
  4. Remove the coolant inlet pipe. Thermostat 3.6L gm-03-36-2447.gif

  5. Remove the thermostat mounting bolts and remove the thermostat.
  6. Clean the thermostat and heater pipe mating surfaces.
To Install:
  1. Place the thermostat in the housing with a new gasket.
  2. Install the thermostat and gasket on the engine with the mounting bolts. Tighten 89 in-lb (10 Nm).
  3. Install the coolant inlet pipe.
  4. Install the heater pipes.
  5. Install the throttle body.
  6. Install the air cleaner.
  7. Fill the cooling system and perform a leak test.
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Dec 19, 2010 | 2002 Buick Rendezvous

1 Answer

What do i do when its over heating? how do i install thermostat?


Thermostat Removal & Installation 3.4L & 3.5L Engine To Remove:
  1. Drain the coolant below the level of the thermostat.
  2. Remove the air cleaner and duct assembly.
  3. Remove the exhaust crossover pipe.
  4. Disconnect the radiator hose from the thermostat housing. gm_mv_ven_tstat.gif

  5. Remove the mounting bolts and remove the thermostat housing.
  6. Remove the housing gasket.
  7. Remove the thermostat.
  8. Clean the mating surfaces.
To Install:
  1. Install the thermostat on the engine. NOTE: Apply RTV sealer to the thermostat housing bolt threads.
  2. Install the thermostat housing and gasket with the mounting bolts. Tighten 18 ft-lb (25 Nm).
  3. Connect the radiator hose to the thermostat housing.
  4. Install the exhaust crossover pipe.
  5. Install the air cleaner and duct assembly.
  6. Fill the cooling system.
  7. Check the cooling system for leaks.
3.6L Engine To Remove:
  1. Remove the air cleaner.
  2. Remove the throttle body.
  3. Remove the heater pipes.
  4. Remove the coolant inlet pipe. Thermostat 3.6L gm-03-36-2447.gif

  5. Remove the thermostat mounting bolts and remove the thermostat.
  6. Clean the thermostat and heater pipe mating surfaces.
To Install:
  1. Place the thermostat in the housing with a new gasket.
  2. Install the thermostat and gasket on the engine with the mounting bolts. Tighten 89 in-lb (10 Nm).
  3. Install the coolant inlet pipe.
  4. Install the heater pipes.
  5. Install the throttle body.
  6. Install the air cleaner.
  7. Fill the cooling system and perform a leak test.
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Sep 18, 2010 | 2002 Pontiac Aztek

1 Answer

Thermostat replace


You didn't post your engine size so I will post the steps for the 3.4 and the 3.6L.

Below is for the 3.6L:

3.6L Engine
  1. Remove the air cleaner.
  2. Remove the throttle body assembly.
  3. Remove the heater pipes.

    NOTE Use a universal or swivel socket with a long extension in order to remove the bolts.

  4. Remove the coolant inlet pipe.

    NOTE Use a universal or swivel socket with a long extension in order to remove the bolts.

  5. Remove the thermostat bolts and the thermostat.
  6. Clean the thermostat and heater pipe sealing surfaces.
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To install:
  1. Install a NEW thermostat gasket.
  2. Install the thermostat and gasket.
  3. Install the thermostat bolts and tighten them to 89 inch lbs. (10 Nm).
  4. Install the coolant inlet pipe.
  5. Install the heater pipes.
  6. Install the throttle body assembly.
  7. Install the air cleaner.
  8. Fill the cooling system.

Jan 10, 2010 | 2001 Pontiac Aztek

2 Answers

HOW DO I CHANGE THE THERMOSTAT ON A 1998 CHEVROLET LUMINA 3.1


FIRST OF ALL YOU HAVE TO DRAIN SOME COOLANT.JUST ENOUGH SO COOLANT WONT FLOW ALL OVER ENGINE.AND COOLANT TO EXPENSIVE ON THE GROUND.TO GET TO THERMOSTAT.YOU HAVE TO DISCONNECT CONNECTORS TO MAF EGR IDLE SPEED CONTROL AND IAT SENSOR.. REMOVE THROTTLE AND SHIFT CABLES FROM BRACKET.REMOVE AIR FILTER ASSEMBLY WITH MASS AIR FLOW SENSOR.REMOVE BOTTOM PORTION OF AIR FILTER HOUSING.REMOVE COOLANT HOSES FROM THROTTLE BODY.THEN REMOVE THROTTLE BODY ASSEMBLY.YOU HAVE TO DISCONNECT SMALL COOLANT HOSE TOP WATER PUMP.REMOVE SMALL BOLT THAT HOLDS METAL COOLANT LINE TO WATER PUMP.THIS LINE HAS TO BE MOVE JUST ENOUGH SO YOU CAN REMOVE THROTTLE BODY.ONCE THROTTLE BODY OUT THE WAY YOU CAN REMOVE THERMOSTAT.BESURE WHEN YOU PUT EVERYTHING BACK TOGETHER.REPLACE THROTTLE GASKET AND THE COOLANT HOSES COME OFF THROTTLE BODY BESURE TO USE OLD COOLANT HOSES MEASUREMENTS FOR NEW HOSES MEASUREMENTS MAKE SURE YOU BUY THE CURVE HOSE FOR THROTTLE BODY. DONT TRY TO USE STRAIGHT HOSE IT WILL KINK AND CAUSE NO COOLANT FLOW.WHEN YOU ARE DONE.FILL COOLANT BACK TO CORRECT LEVEL AND BLEED COOLANT SYSTEM.

Oct 25, 2009 | 1998 Chevrolet Lumina

2 Answers

1990 Pontiac Lemans choke plate location


I'm venturing to guess that a 1990 lemans is fuel injected. then you wouldn't have a choke plate. I would start by checking the iginition system first, plugs, wires, cap, rotor, and if all that looks good then look at the fuel system.

Jan 10, 2009 | 1990 Pontiac LeMans

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