Auto Answers » Engine » Cadillac » Page 3

Cadillac engine repair questions and answers

Post your Cadillac engine question or share what you know by answering questions

1534 Questions
Sort by:
  • AutoMD Member
    AutoMD Member - 1997 Cadillac Seville - Engine - 3/10/2014
    Why would your oil pressure warning lights come on
    Oil is up and not needed, checked dip stick....stop engine warning...did not over heat
     
    • HouseCallAuto
      3/10/2014 HouseCallAuto
      Hard to advise because if there is no oil pressure then you do not have a lot of time to spend listening to it for a diagnosis. That being said this needs a pro to look at it so there is the least amount of time that the engine will run during diagnosis. An engine that has zero oil pressure will become severely damaged in just a few minutes of running so the strategy that will be used by a pro would be to hook up a manual gauge to read actual oil pressure the moment it is running and if there is oil pressure then the engine can be allowed to continue to run to determine the cause of the stop engine warning. Might be a bad sending unit but right now you do not know that.
  • lewis
    lewis - 1994 Cadillac Fleetwood - Engine - 3/10/2014
    I have a 1987 Mercedes 190E has a new alternator but battery goes dead quickly. Any recommendations?
    Battery is good.
     
    • Jimm
      3/10/2014 Jimm
      Sounds like a weak battery, or short in the electrical system - but before replacing the battery, remove it and take to the nearest auto parts store to have the battery fully recharged and tested for free.

      There may be other issues; alternator, serpentine drive belt worn or belt tensioner worn - in addition to the parasitic current draw. Check to make sure all switches / lights / interior door lights / courtesy lights are off.

      To test for the parasitic electrical draw - remove the various fuses - one at a time - and with a volt / ohm meter connected across the battery terminals - observe whether the respective circuit has any voltage drop with the fuse removed and replaced. If the fuse removal and replacement affects the voltage / current drop - then look at the components in that particular circuit.

      Once the battery is fully charged and reinstalled - take the vehicle to the nearest auto parts store for a complete charging system test - for free - to test the condition of the; alternator, battery, belt, wiring, starter, etc. Post a reply with the results for further assistance.
  • AutoMD Member
    AutoMD Member - 2004 Cadillac DeVille - Engine - 3/7/2014
    Car starts and drives great in the morning, by the end of the day wont start at all, instrument panel lights up
    Car want start unless I let it sit for awhile, plus door locks and unlocks by itself, radio turns on and off,gas hand drop to the E position, happens off and on, when I drive for a good minute sometimes all the service lights will pop on, the car only has 60,000 ...
     
    0 answer
  • frank
    frank - 2004 Cadillac DeVille - Engine - 3/1/2014
    Fluctuating idle and rpm
    my car's idle goes from 6oorpm to 900 rpm when i put it in gear, and sometimes it will hold 40mph and slowly climb with my foot of the gas pedal. does this sound like a vacuum leak? and sometimes it idles and runs fine..its very strange symptoms..any suggestions?
     
    • Jimm
      3/1/2014 Jimm
      Several possibilities; vacuum hose / tube leaking, faulty IAC (idle air control) valve. As a first step - inspect / trace all the vacuum hoses - replace any which are damaged or cracked.

      The parts are readily available from these many on-line sources, www.partsgeek.com, www.rockauto.com, www.discountautoparts.com, www.autopartswarehouse.com, www.jcwhitney.com - to list only a few possibilities.
      In fact, they (RockAuto) list the IAC from around $167.00 for your vehicle.

      If you need directions / instructions for the replacement, use these websites; www.autozone.com, or www.AutoMD.com and the 'How-To-Guides' feature.
  • Perry
    Perry - 1998 Cadillac DeVille - Engine - 2/27/2014
    P0741 code is active. how can i repair if possible
    the car runs fine
     
    • Jimm
      2/27/2014 Jimm
      P0741 - Torque Converter Circuit Performance or Stuck

      The torque converter clutch (TCC) solenoid is faulty or stuck off. Look for a wiring problem or if you have access to one - a scan tool that will actuate the TCC for you.
  • Draginj23
    Draginj23 - 2006 Cadillac CTS - Engine - 2/25/2014
    Can someone help with codes and what to do ?
    The other day started car and this is when all this happened .. i noticed my check engine light came on after a rough start to the car. While driving wife to work the engine light started to flash and noticed i lost some power and rpm gauge was going up and down . I ...
     
    • Jimm
      2/25/2014 Jimm
      The fault codes; P0301 = Cylinder # 1 misfire

      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.

      P0201 = Injector Circuit Malfunction - Cylinder 1. This trouble code indicates that the PCM senses that there is a problem in cylinder #1 fuel injector circuit.

      Here are the possible causes of P0201

      o Dirty or clogged fuel injector
      o Defective fuel injector
      o Short or open in the fuel injector circuit
      o Defective PCM

      Possible solutions:

      o Repair or replace the wires/connection in the fuel injector circuit
      o Clean or replace fuel injector
      o Replace and reprogram the PCM
  • greg
    greg - 2003 Cadillac DeVille - Engine - 2/25/2014
    How much does it cost to fix a egr vale
    my car keeps cutting off when i warm it up .i got po404 coad
     
    • Jimm
      2/25/2014 Jimm
      The parts are readily available from these many on-line sources, www.partsgeek.com, www.rockauto.com, www.discountautoparts.com, www.autopartswarehouse.com, www.jcwhitney.com - to list only a few possibilities.
      In fact, they (RockAuto) list the EGR valve from around $96.00 for your vehicle.

      You may chose to install the EGR valve yourself; www.autozone.com - for the directions. Recognize the part cost at $96.00 does not include any labor.
  • Steve
    Steve - 1996 Cadillac Eldorado - Engine - 2/25/2014
    The check engine light comes on when I accelerate the car hard or go up a hill. I get message that the emission system
    needs work and the car will begin to run rough. If I stop the car for ten minutes and restart the car, all the problems go away and the check engine light goes off the next day. Diagnosis of the check engine light revealed codes P1406, P0101, P1108.
     
    • Jimm
      2/25/2014 Jimm
      P1406 - indicates an EGR problem. Clean the EGR valve to remove dirt and carbon.

      P0101 - indicate an issue with the mass air flow sensor (MAF) - such as dirty or an air leak. Same recommendation - clean the MAF first.

      P1108 - BARO to MAP Sensor Comparison Too High

      In each case - use a mass air flow (MAF) spray cleaner to clean the mass air flow sensor. The EGR valve can be cleaned using carburetor / fuel system spray cleaner.
  • frank
    frank - 2004 Cadillac DeVille - Engine - 2/23/2014
    High idle occasionally
    my cadi, every now and then will idle very high, the other day it was holding 60mph on the highway with my foot off the gas pedal, and slowly rising. cruise control was off and only till i pulled over and shut off the car,then restarted it the idle was normal again. ...
     
    • HouseCallAuto
      2/23/2014 HouseCallAuto
      Check for a vacuum leak at the rubber boot that connects the intake manifold with the throttle body as they are known ffor splitting open on the bottom. You could confirm this by spraying water at this boot and listening for a change in the idle or even a stall out while spraying the water.
  • Cybage QA
    Cybage QA - 2007 Cadillac Escalade - Engine - 2/19/2014
    This is a testing question.
    testing question.
     
  • AutoMD Member
    AutoMD Member - 2003 Cadillac CTS - Engine - 2/8/2014
    2003 cts luxury sport- problem: zero power with jumper cables attached...hmmm
    I know i have a bad battery however when I first attached jumper cables the radio played amongst other accessories, tried to crank it twice. first nothing happened 2nd time everything cut out completely. all colored fuses checked out fine. What could of happened? I ...
     
    • Jimm
      2/8/2014 Jimm
      Check the battery cable connections as the first step - should not be loose or corroded - at either end of the positive or negative cable.
  • AutoMD Member
    AutoMD Member - 2003 Cadillac CTS - Engine - 2/8/2014
    2003 cts luxury sport- problem: zero power with jumper cables attached...hmmm
    I know i have a bad battery however when I first attached jumper cables the radio played amongst other accessories, tried to crank it twice. first nothing happened 2nd time everything cut out completely. all colored fuses checked out fine. What could of happened? I ...
     
    • Jimm
      2/8/2014 Jimm
      Check the battery cable connections as the first step - should not be loose or corroded - at either end of the positive or negative cable.
  • AutoMD Member
    AutoMD Member - 2003 Cadillac CTS - Engine - 2/7/2014
    2003 cts luxury sport- problem: zero power with jumper cables attached...hmmm
    I know i have a bad battery however when I first attached jumper cables the radio played amongst other accessories, tried to crank it twice. first nothing happened 2nd time everything cut out completely. all colored fuses checked out fine. What could of happened? I ...
     
    • HouseCallAuto
      2/7/2014 HouseCallAuto
      You have not mentioned whether you even checked the basics. The side terminal connections on GM vehicles have a tendency to sometimes corrode under the vinyl covers and this powder-like corrosion acts like a resistor and causes an open circuit even when the terminal is tight. So, confiorm that the terminals are clean and bright copper showing at the place oif contact to the lead face of the battery connection. Take the 5/16" bolt out of the terminal end (usually it is the positive that corrodes) and slip off the vinyl cover to make it easier to clean the terminals. After youi tell me you have confirmed that the battery connevction is good I will continue to advise you. And by the way, if this battery needs replacement, do so at the same time.
  • AutoMD Member
    AutoMD Member - 1999 Cadillac Eldorado - Engine - 2/7/2014
    Car will not start when you turn the key
    car will not start but when you bypass the starter relay it will start
     
    • HouseCallAuto
      2/7/2014 HouseCallAuto
      When you bypass the starter relay, I assume that the engine cranks and starts but stalls right away? If that is the case and you also have a security light illuminated on the dash, then your cause is a broken wire that leads to the ignition lock cylinder probably right at the rear of the lock cylinder. If you check fault codes there is probably a P1626 give or take a few digits at the end. There is a way to bypass this security system if you want to, just google "passkey bypass" or replace the lock cylinder in the column . The lock cylinder comes with the small gauge wires attached to it with a really tiny connector at the end.
  • AutoMD Member