Buick engine repair questions and answers
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jandmgriffin - 2009 Buick Enclave - Engine - 3/19/2015I have a 2009 Buick Enclave with 108,000 miles. Had the transmission replaced 4 months ago. The check engine light came on last week as a misfire in cylinder 4. We replaced the coil on cylinder 4 and still had the check engine light misfire at coil 4. So we replaced ...
Denise - 2001 Buick LeSabre - Engine - 3/14/2015From the auto stor I received these codes: P0300; P0404:P1404; P0128;P0302 Can any of theses issues be fixed without going to an auto repair shop?
3/14/2015 JimmCannot state whether any of these issues can be fixed/repaired at home - depends on diagnostic and repair skills.
P0300 = Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code. The underlying cause is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold or un-metered air getting past the airflow sensor, or an EGR valve that is stuck open.
P0404 - Exhaust Gas Recirculation Control Circuit Range/Performance. P0404 indicates that the feedback circuit sends signals to the PCM that the EGR valve is not functioning according to the command of the PCM.
Here are the possible cause of P0404
* Short or open in the ground circuit
* Short or open in the reference circuit (feedback circuit)
* PCM controlled circuit voltage short or open
o Repair or replace the ground circuit/wires
o Repair or replace the wirings/connection in the reference circuit (feedback circuit)
o Repair or replace PCM controlled circuit voltage wirings/connections
P0302 - Cylinder 2 Misfire Detected. P0302 means that cylinder two is misfiring. A misfire occurs when there is incomplete combustion inside the cylinder.
Defective fuel injector
Defective ignition coil pack
Defective high tension wire or spark plug
Repair vacuum leak
Replace defective injector
Replace defective ignition coil pack
Replace burnt exhaust valve
Replace defective high tension wire or spark plug
P0128 - Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature). P0128 indicates the engine has not achieved the optimum temperature within the specified amount of time.
Low coolant level
Stuck open thermostat
Defective engine coolant temperature (ECT) sensor
Defective intake air temperature (IAT) sensor
Defective cooling fan
Defective cooling fan relay
Possible Solutions: Most typical repair is to replace the thermostat as first step.
Top off coolant
Replace engine coolant temperature (ECT) sensor
Replace Intake air temperature (IAT) sensor
Replace cooling fan
P1404 = EGR Close Position Performance
5 volt supply circuit high resistance
EGR signal circuit high resistance
Sensor ground circuit high resistance
Ground circuit high resistance
EGR control circuit high resistance
EGR signal circuit shorted to ground
Exhaust gas recirculation valve
Mr. John - 2001 Buick Century - Engine - 3/12/2015Seems like something is not resetting quickly. This usually happens when stopping at a convienience store (WaWa) and getting right back in and trying to start. If you wait a short time (about 15 minutes) it starts right up like there was never anything wrong.
3/12/2015 D & E WhiteSounds like your charging system. Does your car make any noise when you try to start it? That can tell you a lot about what us going on. Typically your symptoms show that your battery mat not be getting recharged by your alternator, leaving it with low amperage. When you turn your key to start the car, your starter (and solenoid) require a big charge from the battery to start the car. While the car is running, the alternator is supposed to recharge the battery back to full power/charge. A lot of short trips can drain your battery. If there us a clicking noise, when you try to start your car, it is an indication that your starter is good (the noise is the solenoid contacts trying to work(. If there is no noise or it sounds "slow" then I'd check the battery and alternator. Does your car take a jump easily? Anyway, you should have your mechanic check it out for you before the car dues in the middle of nowhere, leaving you stuck on the side of the road.
david camp - 2001 Buick Park Avenue - Engine - 3/9/2015i have replaced fuel filter and seems like it helped a little but it still does not want to idle or stay running unless i give it a little gas to keep rpm up. It almost seems like it chokes itself out when i give it gas to keep it running.?
R Wilcox - 2001 Buick LeSabre - Engine - 3/7/2015I rev the car up when starting. After 4 or 5 attempts it will start. There is a hesitation when I put the accelerator down also. There is a new kind of bubbling sound right in front of the driver. Thermostadt, EGR valve and gasket, Ignition coil, mass air flow ...
jeff - 1995 Buick LeSabre - Engine - 2/25/2015installed new fuel pump and fuel filter.installed new camshaft positu ion sensor
Pat Hobbs - 1996 Buick Park Avenue - Engine - 2/24/2015My check engine light is on and when the engine is warm and I am stopped the oil pressure drops a fair bit. There is no noise or smell and I have owned this since new. It now has 186,000kms on it and other than this it is in MINT condition. I have checked the fuel ...
Pat Hobbs - 1996 Buick Park Avenue - Engine - 2/24/2015My check engine light is on and when my car is warm and when stopped my oil pressure drops a fair bit. What am I looking at for repair, my husband thinks it is the crankshaft bearings. What do you think? It has 186,000 kms on it. Ultimately if this is the problem ...
chris1901 - 2001 Buick Century - Engine - 2/22/2015I also replace my fuel pump relay fuse I also replaced my battery is well
rob1macho - 2002 Buick Century - Engine - 2/21/2015When I start the car it turns over slow like it wants to stop but it luckily starts all the sudden. I had a mechanic change the battery a year & half ago. It's been very cold here in N.Jersey.
DJDougherty - 1988 Buick Reatta - Engine - 2/19/20151988 Buick Reatta 3.8 , changed plugs and wires, crankshaft position sensor, fuel filter, put in dry gas ,it does try to start, have to heat engine with hot air gun for 30 min then it will start and run fine. the next day same problem if outside temp under 20. car ...
DJDougherty - 1988 Buick Reatta - Engine - 2/19/2015Engine trys to start, i changed plugs and wires, fuel filter, crankshaft position sensor, put in dry gas, if i put heat on engine with heat gun for 30 mins it will start and run fine.i also tryed disconnecting temp sensor, and did the same with MAP sensor, still no ...
Chris - 2000 Buick LeSabre - Engine - 2/17/2015After starting it spits and sputters and then stalls. Won't start right back up, but it will after it sits for a little while. Seems to me like its getting to much fuel, just not sure why!
jayandmaryblackburn83 - 1990 Buick Regal - Engine - 2/3/2015Shut it off. The next day it would turn over but not start
Laura McFaul - 1994 Buick Park Avenue - Engine - 2/2/2015I drove it an hour today on the high way to go back home from visiting family. My check engine light has always been on, so I am not sure if that helps. Recently my dad had to replace a brake line and my transmission leaks slightly. It is the first time I noticed ...