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Cadillac engine repair questions and answers

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  • kevin
    kevin - 1993 Cadillac DeVille - Engine - 4/10/2015
    Runs like exhast is clogged
    Has no power. Heats up fast boggs when you hold it on the floor hotter it get the worse it is has no codes tried disconnectING the exhast replaced distributor replaced computer checked timing
     
    0 answer
  • Tim
    Tim - 2001 Cadillac Seville - Engine - 4/6/2015
    I have 2 cylinders missing
    Compression is 145 and 148 lower part of those spark plugs oil covered what should I be looking at for cause
     
    0 answer
  • Mr. DJ
    Mr. DJ - 2005 Cadillac DeVille - Engine - 3/30/2015
    Disappearing Coolant about every 2000 miles.
    Caddy just hit 50K. From about 40K until now, approx. every 2000 miles the check coolant message displays and the coolant level in the reservoir will be down to the add mark. There are no signs of leaks anywhere. The temp. gauge never goes above the halfway mark, ...
     
    • Jimm
      3/30/2015 Jimm
      Loss of coolant because of a coolant leak is probably the most common cause of engine overheating. Possible leak points include hoses, the radiator, heater core, water pump, thermostat housing, head gasket, freeze plugs, automatic transmission oil cooler, cylinder head(s) and block.

      Make a careful visual inspection of the entire cooling system, and then PRESSURE TEST the cooling system and radiator cap. A pressure test will reveal internal leaks such as seepage past the head gasket as well as cracks in the head or block. A good system should hold 12 to 15 psi for 15 minutes or more with no loss in pressure. If it leaks pressure, there is an internal coolant leak (most likely a bad head gasket but possibly also a cracked cylinder or engine block).

      It is important to pressure test the radiator cap, too, because a weak cap (or one with too low a pressure rating.

      1. Perform a cooling system / radiator pressure test when the engine is cold - as a first step to locate the leak.
      Obtain a loaner tool / free radiator pressure tester from the local auto parts stores such as Autozone, O'Reilly, NAPA, Advance Auto, or PepBoys. Follow their instructions and pump it to an adequate air pressure 12 -15 psi or the pressure rating listed on the radiator or reservoir cap. Observe the leaks and perform the repair.
      Note: do not over pressurize beyond the pressure allowed by the radiator cap, then test the radiator cap as well.

      2. Air pockets trapped in the cooling system can cause the engine to overheat. Some cooling systems have air bleed valves built into the system to aid in the removal of air pockets. Advice: For many cooling systems, the method of removing air pockets is to start the engine and allow it to run with the radiator cap off or loose until all the air escapes from the neck of the radiator. For some systems this method is not sufficient, and the manufacturer has installed air bleed valves usually near or on the thermostat housing.
  • aericson
    aericson - 2006 Cadillac DTS - Engine - 3/28/2015
    Multiple ENGINE replacements
    I recently just bought this Cadillac. It had the engine replaced less than a year before I bought it. I drove it a month and the engine blew. The stabilitrack and traction warnings came on then with a day the engine light began blinking and the motor became ...
     
    • Jimm
      2/9/2015 Jimm
      Cannot accurately state what may be causing the engine failures - as each failed engine would need a complete disassembly and teardown to find out the root cause of the failure.

      One question - how much history is known about the original engine replacement? For what reason was the first engine replaced?
      Jimm
      2/9/2015 aericson
      The first engine was said to be from an accident. The second was said to be a piston If I recall properly. Now this one seems to be the same thing.
    • DrDave
      3/28/2015 DrDave
      Heater core would not automatically be replaced with the engine so, if it had a problem during one engine and remained unchecked, the heating would still be a symptom independent of all engine swaps. Continuing engine failures without a technical bulletin issue by the Manufacturer is highly unlikely. Either the same person involved in doing the engine swap is pulling your chain or the operator is not checking all the urgent fluids or operating the vehicle in a manner not considerable with normal operation of a vehicle compared to daily driving characteristics. racing or off-roading for example metalic shimmer in the oil is a very vad sign. devulges severe engine friction and damage to the cylinder walls and or bearings throughout the engine
  • Cadillac Mike
    Cadillac Mike - 1997 Cadillac DeVille - Engine - 3/15/2015
    Swapping a 1995 Cadillac Deville Concours LD8 northstar to a 1997 Deville base
    I have a 1995 Cadillac deville concours with a LD8 northstar vin y engine I want to swap it into my 1997 Cadillac deville base it also has a LD8 northstar vin y engine is it possible to swap the 1995 to the 1997 without any problems
     
    0 answer
  • lennymefarmer1016
    lennymefarmer1016 - 2000 Cadillac Escalade - Engine - 3/11/2015
    Dash security lite will blink on and off when starting , engine will crank but will not start. have to wait 5-10 -20 m
    it will start after 5-20 min. cold or warm
     
    0 answer
  • frank
    frank - 1999 Cadillac Catera - Engine - 3/7/2015
    Why does the engine stall out when driving down the road?
    When driving at normal speed the engine will will stall out, it will not die but will not accelerate either. You can hold the gas peddle to the floor and it will not go but car will not die. If you Shut the engine off and re-start it everything is fine until the ...
     
    • Jimm
      3/7/2015 Jimm
      First step - have the stored fault codes or check engine light scanned - for free - at any local auto parts store; Advance Auto, Auto Zone, NAPA. Then, post a reply as 'add answer' with the specific code for more assistance. There may be a fault code stored in the OBD memory which may not be displayed as a check engine light.

      Do not skip this important first step - there are literally hundreds of possible fault codes. Avoid wasting/ throwing money at the problem.

      Possible Causes of Engine Hesitation or Stumble:

      Dirty fuel injectors (cleaning the injectors often fixes this)
      Dirty air filter (change filter)
      Dirty / clogged fuel filter (change filter)
      Bad MAP (manifold absolute pressure) sensor
      Bad TPS (throttle position) sensor
      Bad or dirty MAF (mass airflow) sensor
      Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
      Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)
      Bad gasoline (fuel contaminated with water or too much alcohol)

      Sometimes, what feels like a hesitation is actually ignition misfire rather than lean misfire. The causes of ignition misfire may include:

      Dirty or worn spark plugs
      Bad plug wires
      Weak ignition coil
      Wet plug wires
  • frank
    frank - 1999 Cadillac Catera - Engine - 3/3/2015
    Why does car go completely dead?
    Driving down road the car will die, no power at all to the ignition. take battery loose from the battery for two minutes Then re-hook it to the battery. Turn key on for two minutes then turn key back off for two minutes and the car will start again. If not done ...
     
    0 answer
  • Victorious
    Victorious - 2003 Cadillac DeVille - Engine - 3/2/2015
    I recently Changed the rear ignition coil pack but was not new I was driving and the car shut off and won't start…
    The check engine light was on and flashing when checked it said misfire in bank two. Should I've changed the speak plugs
     
    0 answer
  • frank
    frank - 2002 Cadillac DeVille - Engine - 2/26/2015
    How to check and set timing on 98 chevy surburban 1500 5.7 liter vortec…
    Engine lacks power i have done a tuneup on it cap,rotor wires plugs changed the fuel filter and…
     
    0 answer
  • shawn a
    shawn a - 1994 Cadillac Fleetwood - Engine - 2/18/2015
    Why wont it stay running
    car starts runs for 10 min then stops will start again then does it again replaced fuel pump,filter,plugs and starter has plenty of fuel pressure no check engine light on cant get the codes off the ecc which the car comes equipped with the water pump had or has a ...
     
    0 answer
  • benjamin66
    benjamin66 - 2000 Cadillac Seville - Engine - 1/21/2015
    Can i swap engines with a 94 cadi sts?
    Both are v 8 northstar motors
     
    0 answer
  • escalade2005
    escalade2005 - 2005 Cadillac Escalade - Engine - 1/18/2015
    I need to known if my radiator is clogged.
    I replaced the thermostat and waterpump. The truck is overheating and blowing cold air instead of heat. I had heat before I changed the waterpump.
     
    • Jimm
      1/18/2015 Jimm
      Loss of coolant because of a coolant leak is probably the most common cause of engine overheating. Possible leak points include hoses, the radiator, heater core, water pump, thermostat housing, head gasket, freeze plugs, automatic transmission oil cooler, cylinder head(s) and block.

      Make a careful visual inspection of the entire cooling system, and then PRESSURE TEST the cooling system and radiator cap. A pressure test will reveal internal leaks such as seepage past the head gasket as well as cracks in the head or block. A good system should hold 12 to 15 psi for 15 minutes or more with no loss in pressure. If it leaks pressure, there is an internal coolant leak (most likely a bad head gasket but possibly also a cracked cylinder or engine block).

      It is important to pressure test the radiator cap, too, because a weak cap (or one with too low a pressure rating.

      1. Perform a cooling system / radiator pressure test when the engine is cold - as a first step to locate the leak.
      Obtain a loaner tool / free radiator pressure tester from the local auto parts stores such as Autozone, O'Reilly, NAPA, Advance Auto, or PepBoys. Follow their instructions and pump it to an adequate air pressure 12 -15 psi or the pressure rating listed on the radiator or reservoir cap. Observe the leaks and perform the repair.
      Note: do not over pressurize beyond the pressure allowed by the radiator cap, then test the radiator cap as well.

      2. Air pockets trapped in the cooling system can cause the engine to overheat. Some cooling systems have air bleed valves built into the system to aid in the removal of air pockets. Advice: For many cooling systems, the method of removing air pockets is to start the engine and allow it to run with the radiator cap off or loose until all the air escapes from the neck of the radiator. For some systems this method is not sufficient, and the manufacturer has installed air bleed valves usually near or on the thermostat housing.
      Jimm
      1/18/2015 escalade2005
      Ill do the following steps you mentioned. Someone else also mentioned air in the cooling system.
  • Bradley
    Bradley - 2004 Cadillac CTS - Engine - 1/17/2015
    When I shut the engine off I have to wait 10 minutes before I can start the car
    had the ignition replaced because of the recalls about a month ago
     
    0 answer
  • universal auto
    universal auto - 2007 Cadillac CTS - Engine - 1/17/2015
    2007 Cadillac CTS giving me two codes, p0017 and p0018, both sensors have been replaced and still doing the same thing.
    Plugs, oil, filter, all that's is new.. I need help, I'm tired of paying mechanics for guess work.
     
    0 answer