Question about Pontiac Sunfire

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I have a bent pipe that runs across the bottom of my engine in the front. I knoe it's part of the cooling system, but don't know it's name so I can order it,

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  • Pontiac Master
  • 4,340 Answers

Well, if it is rubber, get one from a parts store, if it is metal, go to the dealer and he will have exploded parts diagram, and you can identify it there.

Posted on Aug 29, 2010

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1 Answer

Having a promblem taking off crossover exhaust pipe on a 2005 Buick rendezvous I tooken off the two front exhaust Then took bottom two bolt . But still fasten to something is there other bolts...


Thermostat? engine cooling?
2 engines, here, LYA adn LY7.
nobody here posts engine, why do that?
so ill post only for 1.
the LA1
here are the steps.
NO FSM Sux huh? nor an alldata.com account, why not that? 15 bucks?


STAT out.
Remove the air cleaner and duct assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 3.4L.

Drain the coolant until the coolant level is below the thermostat. Refer to Cooling System Draining and Filling (Refer To List 1) .

Remove the crossover exhaust pipe. Refer to Exhaust Crossover Pipe Replacement (Refer To List 2) in Engine Exhaust.

Remove the radiator hose from the thermostat housing.

Remove the thermostat housing bolts and clean any sealer from the bolt threads.

Remove the thermostat housing and gasket.
remove STAT
next is crossover page.

Disconnect the battery ground (negative) cable. Refer to Battery Negative Cable Disconnection and Connection (Refer To List 1) in Engine Electrical.

Remove the throttle body air inlet duct.

Drain the coolant from the cooling system. Refer to Cooling System Draining and Filling (Refer To List 2) in Engine Cooling.

Remove the inlet radiator hose from the engine. Refer to Radiator Inlet Hose Replacement (Refer To List 3) in Engine Cooling.

Remove the thermostat bypass pipe. Refer to Thermostat Bypass Pipes Replacement in Engine Cooling.



Remove the exhaust crossover heat shield bolts.

Remove the exhaust crossover heat shield.
  1. Remove the exhaust crossover pipe studs/nuts.
  2. Remove the exhaust crossover pipe.

end , remove.

now the bypass pipe FWD cars SUCK
  1. Disconnect the left engine mount strut from the engine.
  2. Remove the heater hose from the bypass pipe.
  3. Remove the thermostat bypass pipe to throttle body nut.
  4. Use the J 38185 in order to remove the thermostat bypass pipe hose clamps (1,5).
  5. Remove the thermostat bypass pipe to cylinder head nut (3).
  6. Remove the thermostat bypass pipe bolt (4).
  7. Remove the thermostat bypass pipe hose.
  8. Remove the thermostat bypass pipe.
sigh.....
why not log in to alldata.com
read the page then ask ques tons that are not clear.
and next time post the engine type.
above is just 1 engine.

Jun 18, 2014 | Cars & Trucks

1 Answer

Need to get air out of cooling system on my car


The 3.1 Engine has a small brass bleeder located in the pipe that runs from the water pump across the top of the valve cover at the front of the engine, as well as sometimes located on the thermostat housing.

Nov 30, 2013 | Chevrolet Chevy Cars & Trucks

1 Answer

How do you put radiator in 1999 hyandai accent


1) Drain radiator by removing cap, and bottom radiator drain bung or bottom hose.
2) Remove top hose.
3) Disconnect the radiator fan's wiring and any temperature sensor wiring if fitted.
4) Remove radiator retaining clasps
5) Disconnect radiator bottom hose.
6) If fitted with an auto box, then remove automatic gearbox oil pipes (Underside)(you might wat to clasp these so they don't leak oil everywhere)
7) Remove radiator expansion bottle feed pipe from top of radiator.
8) Ease out the radiator. If the radiator fan is getting stuck or caught up, then drop the radiator back down and remove the fan first after disconnecting from the radiator body.
9) With new and old radiator placed side by side on a soft surface, change across any components from the old radiator, which didn't come with the new one. These may or may not include such things as: cap, fan retaining screws or clips, bottom radiator seating rubbers, rubber fan shrouding, temperature sensor, top and bottom rubber hoses.
10) Rebuild by reversing the above instructions. Apply silicone pipe sealant to top and bottom hose locations. Make sure you clean and/or replace any heavily corroded metal pipes which connect to the radiator. (Now is also a good opportunity to replace the thermostat to be on the safe side)

11) Fill system with a fresh 50/50 water/antifreeze mix, flush out and refill expansion bottle. Just before you refill the system, turn the interior heater setting up to maximum heat, but do not start the vehicle.
12) Top radiator up to max. Gently massage the top radiator hose to help eliminate air from the system.
13) Once filled, start the car. Pay attention to the temperature. Keep topping up the radiator as bubbles come around the system and the coolant level drops. At the point no more bubbles appear, close off the radiator with the cap. Allow the engine to reach normal operating temperature. If the weather is cold you may want to hold the engine at around 2,500 revolutions to help build heat faster. Keep it running until the radiator fan kicks in, then let it idle for a couple of minutes.
14) Stop the engine and let it cool.
15) Once cool, open the radiator cap and top up again if level is low.

16) Road-test the vehicle. After returning check again for any leaks.


Running the car for the first few days after radiator replacement, check the radiator level and expansion bottle level every day for the first two or three days. This level may drop slightly as any trapped air pockets are pushed out while running. Also, it is possible that any small leaks may begin after adding fresh anti-freeze to the system. If you begin loosing fluid over these first few days, then re-inspect your work and run a cooling system pressure test.

Nov 13, 2012 | 1999 Hyundai Accent

1 Answer

How to install thermostat


from autozone.com


2.2L Engine


  1. If equipped with an automatic transaxle, remove the exhaust manifold, as outlined in this section.
  2. Drain the cooling system.
  3. Remove the thermostat housing to water pump feed pipe bolts.
  4. Remove the thermostat housing to water pump feed pipe.

6d5c45d.gif
  1. Fig. Thermostat mounting-2.2L engine
  2. Remove the thermostat.

To install:
  1. Install the thermostat.
  2. Install the thermostat housing to water pump feed pipe.
  3. Install the thermostat housing to water pump feed pipe bolt. Tighten the thermostat housing to water pump feed pipe bolt to 89 inch lbs. (10 Nm).
  4. If equipped with an automatic transaxle, install the exhaust manifold, as outlined in this section.
  5. Fill the cooling system.


3.1L Engines

  1. Disconnect the negative battery cable.
  2. Drain the cooling system to a level below the thermostat housing.
  3. Remove the air cleaner assembly.
  4. Disconnect the surge tank line from the thermostat housing.
  5. Remove thermostat housing-to-intake manifold attaching bolt and nut, then remove the housing.
  6. Remove the thermostat.

To install:
  1. Clean all gasket surfaces completely.
  2. Insert the thermostat in the intake manifold.
  3. Attach the thermostat housing to the intake manifold.
  4. Install the mounting bolt and nut. Tighten to 18 ft. lbs. (25 Nm).
  5. Install the air cleaner assembly.
  6. Connect the surge tank line to thermostat housing.
  7. Refill the cooling system.
  8. Connect the negative battery cable, remove the radiator cap, then start the engine. Allow the engine to run with radiator cap removed, until the upper radiator hose becomes hot (thermostat open). With the engine idling, add coolant to the radiator until the level is up to the bottom of the filler neck.
  9. Install the radiator cap, making sure the arrows line up with the overflow tube.

Sep 25, 2010 | 2003 Pontiac Grand Am

1 Answer

How to replace water pump 2003 alero. 3400 engine.


Removal & Installation 2.2L Engine To Remove:
  1. Disconnect the battery ground cable.
  2. If equipped with an automatic transmission, remove the exhaust manifold..
  3. Drain the cooling system.
  4. Raise and safely support the vehicle.
  5. Remove or disconnect the following:
    • Right front wheel and tire assembly.
    • Right front fender liner. chevy_cav_02-04_accescover.gif

    • Access plate on the water pump sprocket from the timing cover.
  6. Install J 43651 water pump sprocket holder or equivalent to the water pump sprocket.
  7. Use the access plate bolts to attach J43651 to the engine front cover.
  8. Remove or disconnect the following:
    • Bolts that secure the sprocket to the water pump.
    • Bolt that secures the engine block to the water pump.
    • Bolt that secures the engine front cover to the water pump.
    • Feed pipe that joins the thermostat housing to the water pump. chevy_cav_02-04_wp.gif

    • 2 Bolts that secure the water pump to the engine block.
    • Water pump.
To Install:
  1. Use a threaded stud in the hub to align the water pump sprocket.
  2. Install or connect the following:
    • Water pump.
    • 2 bolts that secure the water pump to the engine block.
    • Feed pipe that joins the thermostat housing to the water pump.
    • Front cover bolt and the bolt that secures the engine block to the water pump. Tighten the bolts to 15 ft lbs (20 Nm).
    • 2 of the bolts that secure the water pump sprocket to the water pump.
  3. Remove the threaded stud.
  4. Install the last bolt.
    • Tighten the bolts to 89 in lbs (10 Nm).
  5. Remove J 43651.
  6. Install the access plate on the water pump sprocket to the timing cover.
  7. Install the access plate bolts.
    • Tighten the bolts to 18 in lbs (10 Nm).
  8. Install the front fender liner.
  9. Install the right front tire and wheel.
  10. If equipped with an automatic transmission, install the exhaust manifold.
  11. Fill the cooling system.
  12. Connect the battery ground cable.
2.4L Engine To Remove:
Water pump 2.4L 87953070.gif

  1. Disconnect the negative battery cable
  2. Drain the engine coolant.
  3. Remove the exhaust manifold.
  4. Remove the coolant intake pipe as follows:
    1. Remove the coolant inlet pipe bolts.
    2. Remove the wheel and tire assembly.
    3. Remove the engine splash shield.
    4. Remove the bolts from the transaxle-to-engine block brace and remove the brace.
    5. Remove the radiator hose from the coolant inlet pipe.
    6. Remove the coolant inlet pipe to oil pan bolt.
    7. Remove the coolant inlet pipe, thermostat and seal.
  5. Lower the vehicle.
  6. Disconnect the heater hose quick connect from the heater outlet pipe.
  7. Remove the front timing chain cover and the chain tensioner.
  8. Unfasten the water pump-to-cylinder block bolts.
  9. Remove the water pump-to-timing chain housing nuts.
  10. Remove the water pump and cover mounting bolts and nuts.
  11. Remove the water pump and cover as an assembly. Separate the two pieces after removal.
  12. Clean the mating surfaces.
To Install:
  1. Install the water pump cover to the water pump assembly.
  2. Install and hand tighten the pump cover mounting bolts.
  3. Install water pump cover assembly.
  4. Install and hand tighten the cover-to-block mounting bolts.
  5. Install and hand tighten the water pump-to-timing chain housing nuts.
    • Tighten the water pump-to-timing chain housing mounting nuts to 19 ft lb (26 Nm).
    • Tighten the water pump cover-to-water pump mounting bolts to 124 in lb (14 Nm).
    • Tighten the water pump cover-to-engine block bolts starting with the bottom bolt first to 19 ft lb (26 Nm).
  6. Install the heater hose to the water pump pipe.
  7. Using new gaskets, install the exhaust manifold.
  8. Install the oil level indicator and tube.
  9. Connect the brake vacuum tube to the cam housing.
  10. Raise and safely support the vehicle.
  11. Install the catalytic converter.
  12. Install the coolant inlet pipe.
    • Tighten the inlet pipe-to-oil pan bolt to 19 ft lb (26 Nm). Tighten the coolant inlet pipe bolt to 124 in lb (14 Nm).
  13. Install the timing chain and tensioner.
  14. Lower the vehicle.
  15. Connect the oxygen sensor.
  16. Fill cooling system and check the system for leaks.
3.4L Engine To Remove:
  1. Disconnect the battery ground cable.
  2. Drain the cooling system.
  3. Loosen the water pump pulley bolts.
  4. Remove or disconnect the following:
    • Drive belt.
    • Water pump pulley bolts and pulley.
    • Water pump bolts, pump and gasket.
    • Clean the water pump mating surfaces.
To Install:
  1. Install or connect the following:
    • Water pump gasket and pump.
    • Water pump bolts.
      1. Tighten the water pump bolts to 89 in lbs (10 Nm).
    • Water pump pulley and bolt until snug.
    • Drive belt.
  2. Tighten the water pump pulley bolts to 18 ft. lbs (25 Nm).
  3. Fill the cooling system.
  4. Check for leaks.
  5. Connect the battery ground cable.
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Aug 31, 2010 | 2003 Oldsmobile Alero

2 Answers

How can i get to the thermostat housing on my 1999 Buick Century


drain the coolant
remove the 2 connectors on the air duct
remove the air inlet duct from the throttle body to the air box
disconnect the throttle cable and cruise control cable
remove the throttle cable bracket one 10mm nut at the bottom of the throttle body and 2-10mm bolts on top of the throttle body
MOVE A SIDE YOU DO NOT HAVE TO REMOVE THE CABLES FROM THE BRACKET
ok there is a coolant pipe runs across the front valve cover
remove the the hose that will go under the upper intake
then remove the 8mm bolt holding the coolant pipe
then back at the throttle body there are 2 small hoses side the clamps up the you will see a brace on the coolant pipe bolts to the throttle body with a 13mm nut remove that nut
ok now the 2 small hoses will be stuck to the pipe use a SLIDE A SMALL SCREW DRIVER BETWEEN THE HOSES AND THE COOLANT PIPE BE CAREFULL NOT TO CUT THE HOSE
now lift the coolant pipe up at the front of the engine IT HASE AN O RING SEAL
then slide the coolant pipe back at the throttle body back to remove the hoses from the coolant pipe
remove the TPS,IAC and EVAP connectors
then remove the 2 thottle body bolts 13mm
remove the throttle body
you may have to TAP THE THROTTLE BODY WITH A SCREW DRIVE HANDLE TO RELEASE
check the gasket make sure it didn't TEAR or REPLACE IT
now remove the hose to the thermostat housing
there are 2 -13mm bolts the top bolt take it out
the bottom bolt remove 90% the bottom bolt hole is slotted
remove the thermostat housing
REV. porcedure to reassemble
then after you have reassembled
OPEN BOTH BLEED SCREWS THEY ARE 7mm BOLTS one on the thermostat housing and the other one is on the coolant pipe
fill the cooling system till you have a STREAM OF COOLANT COMING OUT OF THE BLEEDERS now CLOSE THE BLEEDER SCREWS
top up coolant in rad and install the cap top up the over flow bottle
start the vehicle up and select VENT,HIGH HEAT BLOWER TO HIGH
let vehicle run untill you have GOOD HEAT COMING OUT OF THE VENTS HOT! NOT JUST WARM
this will insure you have no air locks in the cooling system
good luck and i hope this was helpfull


Dec 19, 2009 | 2001 Buick Century

2 Answers

A metal hose leaking antifreeze not sure what the name of it is it's runs underneath the cooling system and back towards the front


that pipe is part of your heater system, if it is leaking it has probably rusted from the inside and should be replaced

Dec 01, 2009 | 2001 Dodge Stratus

3 Answers

Overheating Fiero


well fieros are very different cars you need to fill collent in a speical way so air doesnt get in the lines most fiero owners do not know this but it very important The best way to tell it is for wikipedia
Cooling system issues
With an already hot normal operating temperature of 220 °F (104 °C) prior to the recall switching to a 195 °F (91 °C) thermostat, the mid-mounted engine utilized long pipes to carry coolant to the front-mounted radiator. This demanded that a special coolant filling procedure be followed to prevent severe overheating. Simply pouring coolant into the thermostat housing (on the engine) would leave an air bubble in the radiator, while adding coolant just to the radiator would leave an air bubble in the engine's coolant passages. Proper procedure (with engine idling and the thermostat removed, filling the thermostat housing, burping the bubble out of the radiator by cracking open the radiator cap until coolant exits) must be followed in order to ensure an air-free cooling system.
A second problem has become common as more Fieros are being serviced by shops unfamiliar with their design. The under-body coolant tubes are positioned in such a way that a casual glance beneath the car will not suggest their fragility. As a result, many have been crushed by shop lifts, resulting in a near complete lack of engine cooling. The age of the car means that even GM dealerships may now be unaware of the proper jacking methods.
Lastly, the absence of a spare tire (at the front of the car, right behind the radiator) could have an effect on coolant system performance. i dont know who wrote this and i dont take credit for it

Feb 25, 2009 | 1986 Pontiac Fiero

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