20 Most Recent 2002 Cadillac Seville - Page 3 Questions & Answers

RIGHT FRONT CYLINDER HEAD

Sometimes even the most skilled mechanic may overlook simple things. Check to see if thermostat is installed in correct position. Did you remember to bleed the intake manifold? There is a bleeder valve close to the upper hose going into the motor. Not sure where yours is. Also replace water reservoir cap or radiator cap. Check hoses for sturdiness. A damaged hose may collapse and prevent water from circulating.

if there is an aftermarket radio in the car u can get it from back of the radio

Did your car over heat at any time if so check the Oil if it looks muddy or like cholic milk it has a warped, or cracket head or a blowen head gasket...........Hope tis is not the case and good luck

fuel pressure regulator or fuel pump could be your answer

P0442 - Evaporative Emission Control System Leak Detected (small leak)This indicates a fuel vapor leak in the EVAP control system. It means a very small leak has been detected. In fact, the leak can be from a hole as small as 0.04" in diameter. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.A code P0442 most likely means one or more of the following has happened: A loose or improperly affixed gas cap A non-conforming gas cap (i.e. not factory/original brand) A small leak/hole in a fuel vapor hose/tube Other small leak in EVAP system Faulty vent o-ring sealPossible Solutions: with a P0442, the most common repair is to: Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back. Otherwise, replace the gas cap, or Inspect the EVAP system for cuts/holes in tubes/hosesP0463 - Fuel Level Sensor Circuit High InputThe fuel level sensor (sender) is located in the fuel tank usually integral to the fuel pump module. Usually they cannot be replaced without replacing the fuel pump module, though there are exceptions. There is a float attached to an arm that travels along a resistor which is grounded to the tank, frame or has a dedicated ground circuit. Voltage is supplied to the sender and the ground path changes according to fuel level. How much voltage depends on the system but 5 volts isn't uncommon.As the fuel level changes, the float moves the arm and changes the resistance to ground which varies the voltage signal. This signal may travel to a fuel pump computer module or directly to the instrument cluster module. Depending on the system, the fuel pump computer module may only monitor the resistance to ground and then relay the fuel level information to the instrument panel. If the fuel level signal to the fuel pump module (or instrument cluster module or PCM (powertrain control module)) goes above 5 volts for a specific amount of time, then the module that is monitoring the fuel level circuit will record this fault code.Symptoms of a P0463 DTC may include: Mil (Malfunction indicator lamp) illumination Fuel level gauge may fluctuate abnormally or read empty or full Fuel light may illuminate and sound alarmPotential causes of a P0463 code include: The signal circuit to the fuel sender is open or shorted to B+ (Battery voltage) The ground circuit is open, or ground path may have high resistance due to rust or missing ground ******** fuel tank Damage to the fuel tank could cause problem in fuel level circuit There's an open in the fuel lever sensor's resistor to ground Possibly faulty instrument cluster Less likely is the possibility that the PCM, BCM, or Fuel pump computer module has failedPossible Solutions:Fuel pump senders normally last the life of the fuel pump. So if you have this code present, do a visual inspection of the fuel tank and wiring harness. Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector. Repair as needed. Find out what kind of system you have and verify that voltage to the fuel level sensor is present at the fuel pump wiring harness. If not, repair the open or short in the wiring.Doing a voltage drop test on the ground circuit can determine if there is a high resistance path in the ground circuit. You can perform this by using a voltmeter and connecting one lead to the battery ground post and the other to the fuel level sensor ground at the tank. Turn the key on (preferably the engine should be running). Ideally it should be 100 millivolts or less (.1 volts). Anything close to 1 volt indicates a current problem or a developing problem. Repair/clean the fuel level sensor ground as needed. It's not impossible that the instrument cluster has failed internally or on the printed circuit board (if applicable). These are very difficult for the layman to test. But if you have access to a wiring diagram you may be able to remove the cluster and see the damaged circuit if it's located on the printed circuit board, but otherwise you'll need a scan tool that will communicate with the instrument cluster.A simple way to test the fuel level circuit is to provide a good ground to the fuel level sensor at the fuel tank connector. With the key on the fuel gauge should go to one extreme or the other. Removing the ground path completely should cause the gauge to do the opposite. If the gauge responds, you know the wiring that supplies voltage and ground to the fuel level sensor is good and that the instrument cluster is likely okay. The likely suspect would be the fuel level sensor itself. The fuel tank may need removal to gain access to the fuel pump module in the tank. A PCM or BCM (Body control module) failure isn't impossible but highly unlikely. Don't suspect this first.Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.Thank you for using FixYa, have a nice day.

Hi Patricia:If the "Check Engine" light came on soon after a fill-up at a gas station, check if your gas cap is closed properly. If the gas cap wasn't on tight, this could be the problem. Secure the gas cap properly and if there is no other problems, the "Check Engine" light should clear itself out in a few days of driving. If the gas cap was tight, there is some other problem. Have your car computer scanned to see what is wrong. It could be some minor problem, but it also could be something more serious that can cause more damage to your vehicle if not repaired in time. Some garages or parts stores often offer to scan your computer for free. Others will charge you a diagnostic fee. If your car is fairly new, I'd advise to visit your dealer for this, because it's possible that the problem is still covered by the original warranty and can be repaired for free or a minimum charge. Check your owner's manual for more details.Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.Thank you for using FixYa, have a nice day.

Replace power steering pressure switch or check connection,

Bad coolant level sensor, should be in bottom of readiator or in coolant resevoir/overflow tank. Cheap at parts store!