Question about 2002 Pontiac Grand Prix

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The elbow is broken how do you take it off the intake manifold

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Which elbow where for what? which engine?

Posted on Sep 29, 2009

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How do you change a heater line elbow on a 2004 Pontiac Grand Prix ?


This must be a 3.8 liter engine. They have 2 plastic elbows that always break they run threw the alternator mounting bracket. #1 disconnect battery #2 remove serpentine belt by unloading tensioner . #3 remove alternator and mounting bracket this needs to be pried away from cylinder head remove broken pieces and clean passage bores install new elbows with some vasoline on o-rings and align then reassemble. one elbow comes from intake manifold both sides are the same size the other comes from timing cover near water pump the lager side goes into timing cover.

Aug 19, 2014 | 2004 Pontiac Grand Prix

2 Answers

I have a 2005 Pontiac Grand Prix that is running hot. I have changed the water pump and the thermostat. Checked all hoses and they are good(no leaks) yet I'm still running hot. What's the next


find the bleed valve on coolant system and burp it. make sure you are using a good 50/50 mix of coolant.
maybe run a coolant system cleaner . maybe a clog?
if worst come to worst blow head gasket

Apr 13, 2013 | 2005 Pontiac Grand Prix

1 Answer

Put out airbag light on dash lincoln 2002 ls


it is down under the intake manifold. the intake manifold must be removed to get to it. this vehicle is known for developing a vacum leak in the elbow hose that connects to pcv valve, did it to my car!

Oct 05, 2012 | 2002 Lincoln LS

2 Answers

I have a 2004 freestar with the 4.2L engine and last week got the engine light with the p0171 and p0174 trouble codes. The idle was rough and yesterday, it got so bad the engine will not idle at all. Any...


I just had the same thing. Engine light came on. Rough idle. Codes P0171, P0174, P2195, P2197. Within a week the idle got so bad it would die at stop lights. Seemed like a vacuum leak affecting the idle. Found it today. The elbow where the PCV tube enters the vacuum port on the upper intake was degraded, collapsed and had a whole in it. Wondered why it degraded. I disconnected the tube from the PCV valve and found it quite oily. I think the oil sat in the elbow at the intake because it is flat on top of the engine and could pool there, causing the rubber to degrad. Found a preformed piece of coolant hose at O'Reilly that was the right diameter and cut it to length. Put it on, runs like a charm. I ordered a new PCV valve because I think too much oil was coming through it and caused the hose failure._409.jpg_410.jpg

Jan 01, 2011 | 2004 Ford Freestar

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How do i change my thermostat..i need a diagram and pictures if available


Please see my tip at http://www.fixya.com/cars/r5929960-s_thermostat . These are generic instructions. If you get stuck or need , please get back to me with any questions.

specific instructions and picture below.

Drain the radiator until the coolant is below the thermostat level (below the level of the intake manifold).

  1. Remove the water outlet elbow assembly from the engine. Remove the thermostat from the engine, or, on the 4.8L, from inside the adapter elbow.

To install:
  1. Clean the gasket surfaces on the water outlet elbow and the intake manifold. Use a new gasket when installing the elbow to the manifold.
  2. Install the new thermostat making sure the spring side is inserted into the engine, or, on the 4.8L, downward into the thermostat housing. Tighten the thermostat housing bolts to 20 ft. lbs. (28 Nm). On the 4.3L, 5.0L, 5.7L tighten the studs to 21 ft. lbs. (28 Nm). On the 7.4L tighten the bolts to 27 ft. lbs. (37 Nm).
  3. Refill the cooling system. Start the engine and check for leaks.

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Dec 25, 2010 | 1997 Chevrolet Blazer

2 Answers

Ecm codes are po174 po171 states to check MAF sensor or suspect fuel pressure. vehicle runs fine until you come to a stop or it is idling


Take a look at the rubber elbow on the back of the throttle body. It is under the plastic throttle body cover. This elbow can crack and allow un metered air into the system.

In this picture, it is just above the oval around the IAC

2f531f1.jpg

Also check the intake & air filter housing. If you just replaced the airfilter, the intake could have an air leak after the MAFS ( Mass Air Flow Sensor ). The MAFS is in the housing that the air filter is in.

Feb 26, 2010 | 2003 Ford F150 Regular Cab

2 Answers

Where can i find the thermostat on 1986 gmc jimmy


Follow the upper radiator hose to the outlet elbow (the waterneck!) and it is located under it:

Removal & Installation
  1. Drain the radiator until the coolant level is below the thermostat level (below the level of the intake manifold).
CAUTION When draining the coolant, keep in mind that cats and dogs are attracted by the ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old.

  1. Remove the water outlet elbow assembly from the engine. Remove the thermostat from inside the elbow.
  2. Install new thermostat in the reverse order of removal, making sure the spring side is inserted into the elbow. Clean the gasket surfaces on the water outlet elbow and the intake manifold. Use a new gasket when installing the elbow to the manifold. On later models the thermostat housing may have been sealed with RTV sealant. If so, place a 1/8 inch bead of RTV sealer all around the thermostat housing sealing surface on the intake manifold and install the housing while it is still wet. Refill the radiator to approximately 21/2 inch below the filler neck.
If the thermostat is equipped with a pin hole, be sure to install pin side facing upwards.

Nov 19, 2009 | 1986 GMC Jimmy

1 Answer

2002 LINCOLN LS V6 3.0 PCV VALVE LOCATION


it is down under the intake manifold. the intake manifold must be removed to get to it. this vehicle is known for developing a vacum leak in the elbow hose that connects to pcv valve, so ive done a few.

Jan 05, 2009 | 2002 Lincoln LS

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