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Cadillac engine repair questions and answers

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1534 Questions
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  • bob peterson
    bob peterson - 2000 Cadillac DeVille - Engine - 4/12/2013
    Where is the knock sensor located
    • Mike
      4/12/2013 Mike
      The Knock sensor is located under the intake manifold.
  • nataliajohnson81
    nataliajohnson81 - 2005 Cadillac STS - Engine - 4/11/2013
    How do you drain the gas tank?
    Accidentally put diesel in the tank from my garage that wasn't labeled. Changed spark plus, fuel filter and need to drain the gas out but can not figure it out.
    0 answer
  • purcell375
    purcell375 - 1999 Cadillac DeVille - Engine - 4/10/2013
    Valve num3 is dead . needs valve/job.117,000.rebuild heads or junk it...
    117,000 is only running on six cylynders..stalls and cuts off.valve num3, is dead. no pressure at i invest or junk it.?have to rebuild heads for a valve job, v-northstar engine
    • HouseCallAuto
      4/10/2013 HouseCallAuto
      Do not repair this engine or you will get married to a nightmare.
  • dangger3
    dangger3 - 2005 Cadillac CTS - Engine - 4/9/2013
    Right bank severe misfire
    car runs poorly diagnostics shows misfires on 1 3 and5 cylinders also random misfire melted cat, converter p0301 p0303 p0305 p0300 p018
    • Jimm
      4/9/2013 Jimm
      P0300 = Random Cylinder misfires
      For the misfires

      It may mean that one or more of the following has happened:

      Faulty spark plug or wire
      Faulty coil (pack)
      Faulty oxygen sensor(s)
      Faulty fuel injector
      Burned exhaust valve
      Faulty catalytic converter(s)
      Running out of fuel
      Poor compression
      Defective computer
      Possible Solutions

      If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.

      If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors

      P0301 = Cylinder #1 Misfire Detected
      P0303 = Cylinder # 3 Misfire Detected
      P0305 = Cylinder # 5 Misfire Detected

      More than likely - given these three cylinders the problem is due to faulty ignition coils or wiring common to these cylinders.
    • HouseCallAuto
      4/9/2013 HouseCallAuto
      This car needs a timing chain replacement and a catalytic converter for Bank one.
  • kendyer62ny
    kendyer62ny - 2000 Cadillac DeVille - Engine - 3/30/2013
    Excessive oil usage 4 qts between changes
    118000 mild valve tap when cold
    • HouseCallAuto
      3/30/2013 HouseCallAuto
      The fix is going to be replacing the engine if there is no oil leakage externally.
  • pete
    pete - 1993 Cadillac Allante - Engine - 3/27/2013
    Engine hard starts or no start, runs rough and quits if it does start
    only P012 and p053 and are both current and history, manual says 4x cam reference interrupt or not present. Replaced ICM, problem is same. About to replace PCM as It is part of this 4x ref circuit and I understand is a weak link in this model. Anything else I ...
    0 answer
  • garciapaul4404
  • Straughter
    Straughter - 1992 Cadillac Seville - Engine - 3/20/2013
    Car is reading message battery no charge the battery is two months old and the alternator is two months old as well
    Car is message that says battery no charge
    • spanionneo
      3/20/2013 spanionneo
      usually, the lamp you're seeing is a sign of a bad alternator. In your case, i wouldn't put to much faith in the age of these components...Grab a multi-meter and measure battery while car is should read higher than 12.4. Then start car and measure battery should be reading something over 14v...if those conditions are not meet, then the indicator lamp is simply telling you that there's a charging problem.
  • will.berkey
    will.berkey - 2003 Cadillac DeVille - Engine - 3/19/2013
    High RPMs when Idling
    My cadillac deville is having engine problems. It was having trouble starting when it was really cold(I would have to hold down the gas pedal and keep the engine idling so it would stay on and not stall out). I took it to a mechanic and then the car decided to work ...
    • HouseCallAuto
      3/19/2013 HouseCallAuto
      I would skip him because the fact that you had apparent symptoms that were likely setting error codes as well and he simply "reset" the computer and did not actually address the diagnosis properly. The 2003 DeVille has very common known issues that a good mechanic can confirm and fix the first time. One issue in particular is a vacuum leak between the intake manifold and throttle body where there is a Intake Plenum Boot that splits open. Check that first as this alone will set various codes and illuminate the service light.
  • candyman1264
    candyman1264 - 1998 Cadillac Seville - Engine - 3/18/2013
    Where is crank sensor located
    • HouseCallAuto
      3/18/2013 HouseCallAuto
      There are two crank sensors on this engine. Both of them are located on the front bank between cylinders 4 & 6. Sensor A is the upper and sensor B is the lower.
  • ttechhossracing
    ttechhossracing - 2000 Cadillac Eldorado - Engine - 3/18/2013
    Why it overheats going up inclines
    has lots of new coolant system parts
    0 answer
  • alexsowls
    alexsowls - 1999 Cadillac Eldorado - Engine - 3/17/2013
    I just replaced the battery in 1999 cad el dorado esc battery not charging light is on battery volts 11 it just started
    No noise or warning just started something draining battery battery not charging light is on
    • CVO
      3/17/2013 CVO
      Battery/Charging Alert:
      Indicates voltage level is below normal level and the vehicle's charging system is not functioning properly. Check battery terminals, alternator belt, and battery condition.

      Check the alternator, it must deliver an output from 13.5 to 14.5 volts.
      A 3/4 charge battery is 12.50 volts
      A discharge battery is 11.75 volts.
      A battery under a cranking load and it is reading less than 7 volts,it will be a recycled battery.

      Local auto parts will test the battery and the alternator for free of charge.
      3/17/2013 CVO
      How to Stop Car Battery Drains: DIY Auto
      There are plenty of energy-robbing devices on your car that are supposed to go to sleep when it's parked, and sometimes, not all of them go to sleep. Here's how to give them a tranquilizer.

      For more information...................
  • bigguppysr
    bigguppysr - 2005 Cadillac STS - Engine - 3/13/2013
    Battery charged lights brite wont turn over
    • Jason
      3/13/2013 Jason
      How old is the battery? It could be a starter, neutral safety switch, battery, cable connection. Check the battery cables - they must be clean and tight. Sometimes you can tap the starter and it will work (bad starter).
  • phillip
    phillip - 1995 Cadillac DeVille - Engine - 3/4/2013
    Why are my throttle poistion senors keep going out this is the 3 one
    1995 cadlic deville
    • HouseCallAuto
      3/4/2013 HouseCallAuto
      Then it is not the throttle position sensor that needs fixing. It is just not possible or likely that three went bad. You are misdiagnosing for sure. Maybe the wiring going to the TPS or the TPS connector. How did you diagnose the TPS? What sort of problems are you having? Did you attach a code reader and read fault codes.