the car is acting like its getting to much fuel. changed the fuel pump, fuel filter, and the fuel pump relay.
when we step on the gas it either bogs down or stalls, then the car wont start. cant smell gas but acts like its flooded. what could it be? we think its the fuel pressure regulator or the fuel injectors? please help we ha ve been working on this car for 3 months now. just when we think we get the car fixed something else is wrong with it. the fan has also stopped working and when we took out the sensor on the radiator the fans turned on. we changed the thermostat and the temperature control sensor below the thermostat. we have also changed the coil packs the module underneath them the spark pl
Experienced mechanics share their insights in answering this question :
There could be a few things contributing to your problem. You are correct that clogged or sticking fuel injectors and possibly the fuel pressure regulator could be faulty. A plugged catalytic converter can also cause the vehicle to bog down. A failing throttle position sensor can cause the symptoms you describe as well. I suggest having a certified technician, like one from YourMechanic.com, do a few tests to determine the exact cause of your starting concern.
How to Identify and Fix Common car Problems ?
Our sources include academic articles, blog posts, and personal essays from experienced mechanics :
The most common reasons a Buick LeSabre engine stalling are the fuel system, the air intake system, or the ignition system.
The most common reasons a Buick LeSabre won`t start are a dead battery, an alternator problem, or failed starter.
If your car doesn`t start with a new fuel pump, chances are the fuel pump is either not hooked up right or is broken. Double check that the pump is correctly installed and all hose attachments are plugged in. Next, check for any blockages along the fuel line—this can also cause your car not to start.
Clogged Fuel Injectors
If the car cranks when you turn the key, but the engine won`t start, it could be because fuel isn`t getting to the engine. One potential reason for this could be dirty fuel injectors. Over time, the fuel injector nozzles can become clogged with rust, corrosion or debris.
Some of the most common sensors that lead to engine stalling include the mass airflow sensor (MAF), engine coolant temperature sensor (ECT) and manifold absolute pressure sesnsor (MAP). The idle air control valve (IAC) and exhaust gas recirculation valve (EGR) are also well known for causing engine stalling.
The most common reasons a Buick Regal engine stalling are the fuel system, the air intake system, or the ignition system. Search our network of RepairPal Certified shops near you to speak with a technician about your issue.
Some other typical reasons engines fail to start include:
Low or discharged battery. Corroded or loose battery cables. Starter motor relay failure. Ignition switch failure.
If your vehicle won`t start, it`s usually caused by a dying or dead battery, loose or corroded connection cables, a bad alternator or an issue with the starter. It can be hard to determine if you`re dealing with a battery or an alternator problem.
Your engine won`t start. While the cause could be a range of issues related to fuel, compression, or spark, the fuel pump is often a likely culprit.
To confirm that your pump has failed, check the pressure in your fuel lines with a fuel pressure gauge; if it reads zero, then your pump is likely dead. You can also check your car`s fuse box; a blown fuel pump fuse is another reliable symptom of a failed pump.
Odds are, if you smell gas while cranking the engine, it`s getting fuel. It`s probably not getting spark. Common causes for no spark: Bad crankshaft sensor. Bad camshaft sensor.
Bad solenoid may be causing vehicle to stall.
You will most likely experience a loss of power steering, making it hard to steer the car. Next you could lose your power brakes, increasing your vehicle`s stopping distance. Here are some tips on what to do if your car stalls while driving, so you can manage the situation and navigate your way to safety.
Common causes of intermittent stalling may include a bad idle speed control (ISC) system, low fuel pressure, loss of ignition, vacuum or EGR leaks, or other problems we`ll get to later in this article.
The O2 sensor will not cause the no start. The no start can be caused by the fuel pump or the ignition system. You should check the engine for spark and fuel pressure, when it is not turning on to help narrow the problem down.
Car Will Not Start: Over time, as the camshaft position sensor fails, the signal it sends to the engine control module weakens. When the engine no longer receives the signal, you will not be able to start your car.
The crankshaft position sensor monitors the position and speed of the crankshaft and other parameters that play an important role when starting the engine. If the crankshaft position sensor is having a problem, the vehicle may have intermittent starting issues or not start at all.
Can a bad spark plug cause a car not to start? Yes. The spark plug ignites the fuel/air mixture inside the cylinder. If the fuel doesn`t burn, the engine doesn`t make power.
Whirring sound: This might mean that the solenoid is worn out and unable to engage the flywheel. The sound you hear is the armature in the starter spining on its own but unable to crank the engine to start.
You may have water in the gasoline. If you have a carburetor, you may have a bad accelerator pump or power circuit. The Fix: Replace accelerator pump or clean or replace the carburetort. The fuel filter may be clogged.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
the car is acting like its getting to much fuel. changed the fuel pump, fuel filter, and the fuel pump relay.
ANSWER : There could be a few things contributing to your problem. You are correct that clogged or sticking fuel injectors and possibly the fuel pressure regulator could be faulty. A plugged catalytic converter can also cause the vehicle to bog down. A failing throttle position sensor can cause the symptoms you describe as well. I suggest having a certified technician, like one from YourMechanic.com, do a few tests to determine the exact cause of your starting concern.
Just replaced my fuel pump but its not getting any power tested fuel pump relay and fuel fuse both good tested the wires all good.
ANSWER : You need to look at the theft light on dash to make sure it comes on and goes off when you turn the key to the on position. If light comes on and stays on then your theft system is causing the fuel pump to not be engaged. I recommend you check the theft system and then scan the computer for theft system codes. You may need to reprogram the keys to work or you have an bad sensor for the ignition key in the steering column.
Car is not getting fuel. I changed fuel pump and checked the fuel pump relay. It was in good condition. What else could it be?
ANSWER : This may likely be related to the fuel pressure regulator. This is a unit that helps to maintain the fuel pressure in the system. When this is not working, this may cause an erratic fluctuation in the fuel pressure or in some cases, no fuel pressure at all. If you’d like assistance with this repair, I would recommend having an expert from YourMechanic come to your location to diagnose the issue firsthand and service your fuel pressure regulator as necessary.
Not getting enough fuel car will not run right. It stalls when you give it gas and stalls when it’s running. It’s a 1984 Ford Escort.
ANSWER : Hi there, thanks for writing in. Several early 80’s Ford’s swapped from carburetor to fuel injected engines; including your ’84 Ford Escort. However, there were two different fuel systems available that year. If your Escort has the fuel injected engine, one item I’d check is the EGR valve or clean the throttle body.
Both systems impact fuel delivery into the engine and if they are dirty or clogged with excessive carbon build up, can starve the engine to create this type of issue. If it’s the carburetor version, the carburetor might need to be rebuilt, or may be an issue with float bowls inside the carb.
If you need assistance diagnosing the exact issue, feel free to contact one of our professional mechanics to complete an engine is stalling inspection firsthand at your own location.
Car sounds like its not getting fuel cranks normal. Fuel pump is working. Fuses and relays good. crank no start. No codes
ANSWER : Hi There,
Try starting the car and if it does not start, turn the key off and then pull one of the spark plugs out to see if it is wet with fuel. If the spark plug is dry, then you know you have a fuel supply problem. If the spark plug is wet with fuel, I would suggest next checking for spark issues such as a failed ignition coil. Ignition coils are prone to randomly failing and causing the car to not start without warning as you describe. I would suggest having a professional from YourMechanic come to your location to take a look at your vehicle.
Try starting the car and if it does not start, turn the key off and then pull one of the spark plugs out to see if it is wet with fuel. If the spark plug is dry, then you know you have a fuel supply problem. If the spark plug is wet with fuel, I would suggest next checking for spark issues such as a failed ignition coil. Ignition coils are prone to randomly failing and causing the car to not start without warning as you describe. I would suggest having a professional from YourMechanic come to your location to take a look at your vehicle.
Engine is getting fuel to filter but don’t know if it’s getting to the injectors?
ANSWER : If you have tested the fuel pressure and it is OK, you know that fuel is getting to the injectors. So the question becomes whether the injectors are tripping. That can be determined by placing a stethoscope against the injector while a helper cranks the car. you can hear if the injectors are working. If your car runs on the starting fluid, then it must not be delivering fuel for some reason so my guess is that they are not. Diagnosing that condition takes a pretty thorough knowledge of the fuel injection system, so if that is not you, you should have a professional take a look. You can have that conveniently done by contacting Your Mechanic. They will send a technician to your home or office to check out your Nissan and let you know what it is going to take to get it starting again.
I changed the fuel pump in my car thinking that it was the problem, but I’m still not getting power to my fuel pump.
ANSWER : If there is access to a wiring diagram, you can disconnect the fuel pump harness and install a test light in between the power and ground circuits and turn the key to accessory or try to start the vehicle and if the test lamp lights up, the circuit is not the problem and you may have picked up a faulted new fuel pump. IF you can hear the fuel pump power up and there is no fuel pressure at the fuel rail, the fuel filter may be clogged. Consider hiring an experienced technician like one from YourMechanic who can come out for a closer inspection of the vehicle to run a few tests and offer a more personal diagnosis of your fuel system concerns.
Why does my car only run if we bypass the fuel pump relay on my 1998 Acura RL
ANSWER : Hi there. If the car will run with the relay bypassed then the fuel pump is fine. If the relay is fine also then the control for the circuit has a failure. Most of the time this is caused by an issue with the ignition switch or the vehicles main relay. Typically it is the ignition switch though. I would usually start by doing a voltage drop test of the ignition switch followed by testing the main relay. This will help to identify the problem. If you need to have this fuel system problem repaired, consider YourMechanic, as a certified mechanic can come to you to [diagnose why the car will not start] https://www.yourmechanic.com/services/car-is-not-starting-inspection
