Check Engine Light is on

Had anti freeze leak from intake manifold,the mechanic. ended up replacing it all because truck wouldnt start(no gas getting to carb)spyder pump bad ,thats why it was replaced now getting two codes(p200)injector circuit control-(po305)cyclinder 5 misfire,mechanic never ranacross this problem.whatdoes he need to do now ???????????????.?????????
jackleon276@gmail .com 2nd time

My car has 191600 miles.
My car has an automatic transmission.

Experienced mechanics share their insights in answering this question :
Code P0200 relates to a malfunction in the electrical connection or completion of the circuit to the injector. This usually causes an abnormal spray of fuel by this injector causing either a lean or rich fuel condition depending on whether it is spraying too much or too little fuel. it is quite likely that this is also related to the misfire code as well as these types of issues are usually related and an incorrectly spraying fuel injector causing a lean fuel condition can definitely cause a misfire problem as well. I would recommend checking for any additional codes, checking the wiring harness, check the voltage at each injector, use the scanning tool to observe the actual injector function to watch for any abnormal patterns. These kinds of steps should lead you to the problem.

The battery light flashing indicates that you may have a weak battery, a faulty alternator or potentially a bad voltage regulator. As you may know, the alternator is responsible for charging the battery while the engine runs by generating amperage and recharging the battery while the engine turns the alternator. The voltage regulator is a unit that regulates the charging of the battery by the alternator and maintaining a certain amperage while the engine runs. When the alternator is not working properly, this may result in the battery quickly losing charge and the car losing all power as you have described. You may also notice a whining sound as a result of the bearings inside the alternator begin to fail. I would recommend having an expert from YourMechanic come to your location to diagnose and inspect your vehicle.

How to Identify and Fix Common car Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced mechanics :

Reset A Check Engine Light: Two Techniques

Start the car, let it run for one second, and then turn it off. Let the engine sit quietly for two to three seconds, and then repeat the whole process two more times.

Some common problems with the 4.3L Vortec engine include oil leaks, spark plug failure, and coolant leaks. These problems can be caused by a variety of factors, including poor maintenance, overheating, and improper installation.
If the check engine light in your Chevy Blazer starts flashing, that means that the problem needs attention instantly and your Chevy should be brought in instantly. A flashing light reveals that the problem is extremely serious and if not taken care of instantly may result in major and meaningful damage to the car.
Power is generated by pistons that move up and down while fuel is ignited at very specific times. A misfire typically occurs when the timing of this ignition is off. Chevrolet Trailblazer P0300 indicates that two or more cylinders are experiencing misfires.
How to Reset a Check Engine Light Without a Scanner. To reset a check engine light without a scanner, disconnect the negative battery cable and wait a few moments. This will reset the diagnostic system in your vehicle, and if the underlying issue has indeed been resolved, the light should go off immediately.
Chevy Vortec 4300 (4.3L V6) Engine Reliability

Overall, the 4.3 vortec is a very strong and reliable motor, proven by it being the longest lasting production vortec engine. Generally, these engines are extremely capable of lasting up to 300,000 miles.

GM`s New 4.3 Liter V6 EcoTec3 Engine Rated At 18 MPG City, 24 MPG Highway.
While the check engine light can definitely be indicative of serious problems, the most common cause of the flashing is usually an engine misfire. There are many reasons why an engine misfire might be occurring. To run smoothly, an engine must be receiving the correct amount of power from the cylinders in your vehicle.
CHECK ENGINE LIGHT BEST PRACTICES

If the light is not flashing, check the gas cap. Oftentimes if the gas cap wasn`t tightened enough, the check engine light will display. If tightening the gas cap does not make the light go away, take the vehicle in to have the diagnostic codes looked up.

There are many possible causes of a P0300 trouble code: Ignition system problems (e.g. a bad distributor or worn spark plugs) Fuel delivery issues (e.g. a weak fuel pump or clogged fuel injectors)
Can a bad O2 sensor cause a P0300 code? Yes. As it is one of the most vital inputs to your car`s computer for fuel control, a sensor failure can result in an incorrect air/fuel ratio. In addition, it can lead to engine misfiring and set code P0300.
The “check engine” light is the onboard diagnostic system`s way of telling you something`s wrong. But that something could be one of many things, big or small. It could pop on because of something minor like a loose or faulty gas cap. It could also mean a major engine failure.
Tips. Reputable auto shops will not reset a check engine light without fixing the problem that caused the light to come on. Consult a mechanic or repair shop if you need help resetting a check engine light or deciphering error codes.
Major design changes were made to the 4.3 L (262 cu in) V6 for the 1996 model year. Like other small block Chevrolet V8s, the 4.3 L (262 cu in) engine received redesigned heads which had improved airflow and combustion efficiency. These heads are referred to as Vortec heads.
Vortec Forever

There was one more major refresh in store for the 4.3 for the 2003 model year, and that was the introduction of multi-point fuel injection.

Locate the GM 4.3 engine serial number on the left (remember, engines are always viewed from the rear; if the engine were in a vehicle, the left side is the driver`s side) front bank under the cylinder head. Record the last two letters of the number.
4.5 quarts (with filter). After refill check oil level.
It is an engine-driven pump. Air Induction Humidity Sensor: This new feature ensures optimal combustion efficiency, regardless of the surrounding air`s humidity. E-85 Capability: The 4.3L and 5.3L truck engines are E-85-capable, allowing them to run on E85 ethanol, gasoline or any combination of the two fuels.
Engine Oil

Capacity: 6 quarts. . . . . . . . . . . . . . (with filter). After refill check oil level.

A steady check engine light indicates a non-emergency issue, such as a loose gas cap. Flashing check engine lights warn of severe situations requiring immediate attention. Standardized diagnostic codes help identify the trouble.
The most common causes of misfires are worn, improperly installed, and mishandled spark plugs, malfunctioning ignition coils, carbon tracking, faulty spark plug wires and vacuum leaks.
A failed O2 sensor is the most common cause of a flashing check engine light. The O2 sensor is a critical part of the exhaust system, monitoring how much unburned oxygen is exiting the engine in the exhaust. The sensor sends messages back to the engine to adjust the mix of oxygen and fuel being used.
If your check engine light is flashing, something is wrong with your engine. You need to pull over and shut it off as soon as it`s safe to do so. The check engine light flashing when accelerating combined with white exhaust appearing and disappearing suggests a sticking fuel injector.
Use a spark plug socket to remove the plug to get a good look at it. The damage you see will help you determine the cause of the misfire. If the spark plug is just old, replacing it may solve the problem. Make sure to replace and properly gap new spark plugs.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Check engine light refuses to go off after engine replaced
ANSWER : Hello there, you have a long series of issues going on with your 2013 Hyundai Sonata. If you keep getting a repeating oil light on than there is likely a fault in that system.

Since this fault has lasted after the engine was replaced it could be a oil pressure sensor, wiring harness fault, ECU fault, oil pump, oil strainer clogged, or low oil pressure.

To diagnose this issue properly you need a complete vehicle inspection to start from square one and identify the root cause of all this.

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While driving on freeway truck goes into a limp mode, and the check engine light, abs light, parking break light, service brake
ANSWER : It is possible that you could be having an issue with your powertrain control module. This is somewhat of a common problem on many GM vehicles. I would recommend having your vehicle inspected by the dealership to determine if the powertrain control module is functioning properly. If not, a reflash of the powertrain control module may resolve the issue but often times it must be replaced.

Read Full Q/A … : Check Engine Light is on

Car started to slow down and then the check engine light, battery, and engine oil light came on. What could cause this?
ANSWER : Hi there. It is possible that the battery cable came loose or the wires to the oil pressure sensor has came loose or failed. Check the battery cables and make sure that the terminals are tight and clean. Check the wires to the oil pressure sensor and make sure that they are connected and not broken. If everything looks good, then the oil pressure sensor may have failed. Plus, check the computer for codes and see what is stored. This will lead you to the part that could have failed. I recommend replacing the oil pressure sensor then checking to see if the lights will go out. If you need further assistance troubleshooting your vehicle, then seek out a technician, such as one from Your Mechanic, that can assist you with the warning lights that came on.

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2006 Ford Mustang has check engine light on
ANSWER : There are countless potential causes for your illuminated check engine light. The mechanic manually turned off the light, but it came back on because the problem has not been fixed. The first place to start is retrieval of the stored diagnostic trouble codes (DTCs). These codes serve as a starting point for any further diagnostics a mechanic may perform. Codes will be stored anytime the check engine light is on. Since the first mechanic was unable to fix your concern, I recommend giving the professionals at YourMechanic a call. We offer expert check engine light diagnosis and repair.

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Check Engine Light comes on after starting pickup
ANSWER : Hello there, thank you for asking about your 1992 Isuzu Pickup. A professional will have the correct equipment to read OBD1 codes. Retrieving the diagnostic trouble code(s) is the first place to start when diagnosing your vehicle. Increasing RPMs changes engine load, which can in turn affect many different sensors and components, causing the Check Engine Light to illuminate. The only way to narrow down the options and find the culprit is through in person diagnosis with an OEM compatible scan tool. A certified technician from YourMechanic can retrieve the OBD codes at your home or office.

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p0011 code,check engine light one, changed bank 1 vvt solenoid and check engine light still on?
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Traction light/reduced engine power and check engine light coming on
ANSWER : Hello. From what you describe, it would appear that your vehicle may be experiencing some sort of intermittent wiring or sensor issue. If the problem occurred again after driving over a bump, then it may be possible that a damaged or loose wire is shorting or having contact issues. A common issue that can cause stalling is a faulty crank position sensor or wiring. I would carefully examine the engine for any loose or damaged wires. If the Check Engine Light comes back on, I would recommend having the trouble codes scanned before resetting the computer.

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2012 equinox reduced power light engine light and traction light came on. Lost a lot of power got home and all light except engine
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