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Pontiac engine repair questions and answers

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  • Stiles
    Stiles - 1998 Pontiac Sunfire - Engine - 2 hours ago
    What are the head bolt torque specs for 98 Pontiac sunfire 2.2
    Need specs
     
    • Jimm
      2 hours ago Jimm
      Reference this website for the cylinder head bolt torque and correct tightening sequence; www.felpro-only.com/tec_notes/Fel-Pro_Torque-Guide.pdf
  • AutoMD Member
    AutoMD Member - 2004 Pontiac Grand Prix - Engine - 4/15/2014
    Why will the car start but not run without giving it gas
    replaced intake gaskets then this problem started
     
    • HouseCallAuto
      4/15/2014 HouseCallAuto
      You most likely have a vacuum leak or something is not connected like the idle control. Go over your work patiently. Its hard for someone else to help you here because this symptom did not occur naturally. Plug in a code reader and see what fault code might be stored already.
  • AutoMD Member
    AutoMD Member - 2002 Pontiac Grand Prix - Engine - 4/13/2014
    Transaxle replacement or engine remount ?
    As i accelerate on gas, there is a knocking noise against my wheel, but as i cruise it rides normal. I've heard its my axle, but now I'm hearing bc my engine is dismounted that it's rubbing against my tire, has anyone had this issue before ?
     
    • bear.1216
      4/13/2014 bear.1216
      Could be a worn engine or transmission mount. But I would take a close look at the lower control arm bushings. This vehicle is notorious for the control arm bushings tearing out. They also have issues with the sway bar breaking. I would suggest that you take the vehicle to a good suspension shop and let them inspect your clunking noise. A good chassis mechanic will make quick work diagnosing a clunk. Any garage that does alignments will usually inspect it for free.
  • AutoMD Member
    AutoMD Member - 2005 Pontiac Grand Prix - Engine - 4/13/2014
    Coolant leaking from behind the crank pulley
    PLEASE HELP... i've been at this for more than a week now. I cannot find the diagrams that I need . there is a significant leak which looks to be coming from behind the crankshaft pulley. is there a freeze plug there or what? I just cant see exactly what it is ...
     
    • bear.1216
      4/13/2014 bear.1216
      Some coolant is flourescent and can be easily seen under a common black light. They also have leak detection dyes that you can add to your coolant to pinpoint leaks. If you see coolant leaking from the front of the engine near the crank pulley it is likely from the water pump. The water pump has a small weep hole on the underside. That is where it leaks from when the pump wears out. You usually cant see it because the pulley is in the way. Check the back side of the water pump pulley for wetness. It will usually contaminate the serpentine belt also. Check for a stripe of coolant on the hood insulation. That is a sure sign. Most of the time this leak is the water pump. You should also check around the head gasket area and the corners where the intake manifold meets the cylinder heads. Those are other common leaks. I suspect it is the water pump.
  • AutoMD Member
    AutoMD Member - 2005 Pontiac Grand Prix - Engine - 4/12/2014
    Coolant leaking from behind crank pully
    PLEASE HELP... i've been at this for more than a week now. I cannot find the diagrams that I need . there is a significant leak which looks to be coming from behind the crankshaft pulley. is there a freeze plug there or what? I just cant see exactly what it is ...
     
    • HouseCallAuto
      4/12/2014 HouseCallAuto
      There is no freeze plug behind the crank pulley. But, maybe the timing cover gasket is leaking coolant, very likely and probable if it is dry above a certain point.
      HouseCallAuto
      4/12/2014 AutoMD Member
      Thank you... Will do my research now...
      HouseCallAuto
      4/12/2014 HouseCallAuto
      small one inch dia mirror on telescoping rod is a great assist along with a good led light.
      HouseCallAuto
      4/12/2014 AutoMD Member
      Cool.. Thanks so much...
  • AutoMD Member
    AutoMD Member - 2002 Pontiac Sunfire - Engine - 4/12/2014
    Why does my car go idle during long stops?
    My car has 160,000 miles and recently had routine maintenance work completed, thermostats, spark plugs, gasket cover, air filter, and brakes have just been replaced. My thermostat tends to get to the halfway point within the first five minutes of the car being on ...
     
    • Pepe
      4/11/2014 Pepe
      Normal temperature on your car should be around 190. When sitting just at idle for a few minutes does the cooling fan come on?
      Pepe
      4/11/2014 AutoMD Member
      how would I know if it came on?
    • Pepe
      4/12/2014 Pepe
      Leave the car in park with the engine running, pop the hood and watch to see if the blades are spinning. If they are not, wait a few minutes. Your car may be equipped with a temperature sensor that shuts the fan off periodically to save energy. You can also crank the air conditioner, which should turn the fan on right away. The cooling fan is mounted right behind the radiator.
      Pepe
      4/12/2014 AutoMD Member
      I had it running for 5 minutes and it never came on, when I turned the air on I noticed it didn't do anything either. During this the temperature stayed a little above the 195 mark, which on average is where it usually stays around while i'm driving
  • AutoMD Member
    AutoMD Member - 2002 Pontiac Grand Prix - Engine - 4/9/2014
    Transaxle replacement or engine remount ?
    As i accelerate on gas, there is a knocking noise against my wheel, but as i cruise it rides normal. I've heard its my axle, but now I'm hearing bc my engine is dismounted that it's rubbing against my tire, has anyone had this issue before ?
     
    0 answer
  • AutoMD Member
    AutoMD Member - 2002 Pontiac Grand Prix - Engine - 4/9/2014
    Transaxle replacement or engine remount ?
    As i accelerate on gas, there is a knocking noise against my wheel, but as i cruise it rides normal. I've heard its my axle, but now I'm hearing bc my engine is dismounted that it's rubbing against my tire, has anyone had this issue before ?
     
    0 answer
  • AutoMD Member
    AutoMD Member - 2004 Pontiac Grand Am - Engine - 4/6/2014
    Car dies at low speeds and stops
    The car will die at either low speeds or at stops. Security light turns on sometimes with the oil light, battery light and check engine light. Sometimes the security light will not show until I try to start it a couple times. The car is then hard to start. Will ...
     
    0 answer
  • beyond strength
    beyond strength - 1987 Pontiac Firebird - Engine - 4/5/2014
    What is the problem when there is gasoline in the oil pan?
    Car stalled, will not start, checked oil dipstick and it has gas on it, no oil
     
    • Pepe
      4/5/2014 Pepe
      Piston rings may be worn out, due to their poor sealing, this would allow combustion gases to push pass the rings into the crankcase. Do a dry compression test for each cylinder, if numbers don't meet the specs then do a wet compression test and see if numbers rise. Also check your PCV valve, a clogged PCV valve would cause excessive pressure to build up in the crankcase, this could cause seals to leak, is the air filter covered in oil by any chance?
    • HouseCallAuto
      4/5/2014 HouseCallAuto
      Do you / will you / can you do your own work? The cause of fuel in the oil would be caused by a bad fuel pressure regulator or a bad ecm or a bad fuel injector. I assume that this engine does NOT have a carburetor. It has fuel injection?
  • AutoMD Member
    AutoMD Member - 2010 Pontiac G6 - Engine - 4/4/2014
    2010 g6 starts but only runs for a second or two and then dies.
    So far i have checked the following: Fuel pump comes on. Fuel pressure is around 58-60 psi. Has spark. Security light doesn't flash when trying to start or after engine dies so I don't think it's an anti-theft issue. Engine light is not on and code scanner shows ...
     
    • HouseCallAuto
      4/4/2014 HouseCallAuto
      Yes you have a faulty ignition switch and it is very possible that it may be involved in the recall that GM is in the news about right now. Call your local GM dealer and ask about whether your ignition switch replacement is a covered part. They will need your VIN.
      HouseCallAuto
      4/4/2014 HouseCallAuto
      I may have spoken too soon on that. I suggest that you first plug in a code reader and see if any faulkt codes are stored.
  • AutoMD Member
    AutoMD Member - 1996 Pontiac Grand Am - Engine - 4/4/2014
    The wire for my intake temp sensor is missing. Where should it be running from?
    Went for emissions test and it was noticed my intake temp sensor wasnt plugged in. Cant find it anywhere.
     
    • HouseCallAuto
      4/4/2014 HouseCallAuto
      Its a two wire sensor with a two pin connector. If you cannot find it a mechanic will have to intervene here because it may be too much for you (non-mechanic) to run new wires. I believe that the wire is nearby and you do not see it. A mechanic who does repairs everyday will know where to look. The wires must be nearby because even if the wire were broken off, I am sure that the wires still break out of a nearby harness. One wire is tan and the other is black. The black goes to pin #14 of the PCM C2 connector and the tan wire goes to pin # 30 of the PCM C1 connector. The connector can be purchased separately with a AC DELCO part # PT1798
  • AutoMD Member
    AutoMD Member - 2010 Pontiac G6 - Engine - 4/4/2014
    2010 g6 starts but only runs for a second or two and then dies.
    So far i have checked the following: Fuel pump comes on. Fuel pressure is around 58-60 psi. Has spark. Security light doesn't flash when trying to start or after engine dies so I don't think it's an anti-theft issue. Engine light is not on and code scanner shows ...
     
    0 answer
  • AutoMD Member
    AutoMD Member - 2004 Pontiac Grand Am - Engine - 4/4/2014
    While does my car start then immediately cut off
    Car has 85,000 miles. Happened when car was warm. Never had a problem with starting before. Engine light always stays on. Mechanic read code which indicates fuel cap problems, even though fuel cap always passes testing.
     
    • HouseCallAuto
      4/4/2014 HouseCallAuto
      If there is no theft or security lamp illuminated, then youir cause is a bad ignition switch.
  • AutoMD Member
    AutoMD Member - 2002 Pontiac Sunfire - Engine - 4/3/2014
    Why does my car go idle when I am stopped for a period of time?
    My car has 160,000 miles and recently had routine maintenance work completed, thermostats, spark plugs, gasket cover, air filter, and brakes have just been replaced. My thermostat tends to get to the halfway point within the first five minutes of the car being on ...
     
    • HouseCallAuto
      4/3/2014 HouseCallAuto
      I am lost with the statement "kind of goes idle", can you define what that means? Seeing as how this statement seems to be the crux of what you need answered it is best that I know exactly what you mean by that.
      HouseCallAuto
      4/3/2014 AutoMD Member
      The lights like on the radio and the dashboard fade and the RPM gauge fluctuates even though I am at a stand still. This happens for a second or two and then it goes back, the more I am stopped the more it does it. Does that help?
    • HouseCallAuto
      4/3/2014 HouseCallAuto
      Get a code reader from amazon >> http://www.amazon.com/.../ref=sr_1_1

      The cost is $20 and after you get it, plug it in the diagnostic connector under the dash. This is easy to do, two minutes with no experience needed. There might be fault codes stored and the code reader will display them. Update this same post with the code numbers. if there are no codes there, state that you checked and found no codes because that says something also. There are tons of YouTube videos on how to use a code reader but it is so easy you don't need that.
      HouseCallAuto
      4/4/2014 AutoMD Member
      I took the car to advanced auto and had them run the diagnostic, and they said that there were no codes
 
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