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My 2002 grand prix goes from cold to hot when first started, then goes to normal. Now it ticks loudly at first then goes away. Could it be the thermostat?

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  • Cars & Trucks Master
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Could be.
If the engine goes to hot say 5 minutes after starting then back to normal, the thermostat could be slow to open, or you could have air pockets in the cooling system.
The ticking is lack of oil or oil pressure, or a worn out bearing or lifter inside the engine.

Posted on Jul 23, 2013

  • 1 more comment 
  • Casey Harvey Jul 23, 2013

    Ok great. How can I fix the lifter?

  •  Stephen
    Stephen Jul 23, 2013

    If the ticking is a lifter, it would have to be replaced. Which involves removing the valve cover and the intake manifold.

  • Casey Harvey Jul 23, 2013

    ugh sounds expensive.

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Posted on Jan 02, 2017

davidg65
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SOURCE: 2002 Pontiac Grand Prix Thermostat

as you face the engine the thermostat bell is on the right (drivers side) Follow the radiatoe hose. Remove the two bolts and raise the bell still attatched to the hose. the thermostat is there with the rubber seal. You can gently pry the thermostat out with a screwdriver or something similar. Put in new thermostat be sure it is the same as the old one, and then replace or change the seal (be sure it is the smae size and thickness as the old one as I got the wrong size from Napa) Then replace the bell, and tighten, but not over tighten. I hope this helps!

Posted on Jan 31, 2009

  • 194 Answers

SOURCE: Ticking Noise at Startup

Possibly a leaking hydraulic lifter. They can leak down while engine isn't running and then make a ticking noise for a while on startup. If it takes 10-15 minutes to go away, it is more likely to be a loose tappet which needs adjusting.

Posted on Aug 03, 2009

  • 1596 Answers

SOURCE: 2002 grand prix motor 3.8 just want to know where

LOCATION is Oppisite END OF UPPER RADIATOR HOSE
Drivers side of engine BEHIND Top ENGINE Torque Mount
Thermostat Replacement

  • Tools Required
  • J 38185 Hose Clamp Pliers
Removal Procedure
  1. Remove the fuel injector sight shield.
  2. Partially drain the cooling system.
  3. Use the J 38185 in order to reposition the hose clamp from the water outlet housing.
  4. Remove the radiator inlet hose from the water outlet housing.
    1. Remove the water outlet housing bolt and stud. Remove the water outlet housing and gasket.
    2. Remove the thermostat.
    3. Inspect and clean the water outlet housing mating surfaces.
    Installation Procedure
    1. Install the thermostat.
    2. Install the gasket and the water outlet housing. Notice: Refer to Fastener Notice in Service Precautions.
    3. Install the water outlet housing bolt and stud to the water outlet housing.
      • Tighten the water outlet housing bolt and stud to 27 Nm (20 ft. lbs.) .
        1. Install the radiator inlet hose to the water outlet housing.
        2. Use the J 38185 in order to reposition and install the hose clamp to the water outlet housing.
        3. Fill the cooling system.
        4. Install the fuel injector sight shield.
        5. Inspect for leaks.

Posted on Oct 31, 2009

  • 127 Answers

SOURCE: loud ticking noise when engine is cold sometimes

That is a common occurrence for the Festiva. I own several myself and I am a member of a forum with about 9,000 Festiva addicts. The lash adjusters, lifters, sometimes get weak or can get clogged. You can try the oil change but if it keeps occurring all you have to do is replace the lifter/s by removing the valve cover and replace them. You should see from there what needs to be done to replace them. If you need any more help feel free to join our forum www.fordfestiva.com and you will get a load of help.

Posted on Nov 23, 2009

  • 70 Answers

SOURCE: ticking noise

you need to give us more info about your car, based on your info i would say one of your valve lifters is bleeding off pressure when the engine is off, you can try putting 1/2 qt. of automatic transmission fluid in your engine oil, atf is a good cleaning agent and may clean your lifters up. i have done it many times

Posted on Dec 07, 2009

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