Malfunction light is always showing on my dashboard when the engine is on. it never goes off. I have clicked my fuel tank cover more than thrice without success. my car is honda accord made in 2003
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If the gas gauge of your 2007 Dodge Nitro R/T always shows a full reading, there could be a few possible causes for this issue:
Faulty fuel level sensor: The fuel level sensor is responsible for measuring the amount of fuel in the tank and sending that information to the gauge on the dashboard. If the sensor is malfunctioning or stuck in the "full" position, it will consistently display a full reading on the gas gauge.
Wiring or electrical issue: There might be a problem with the wiring or electrical connections between the fuel level sensor and the gauge. If there is a loose or damaged wire, it could prevent the accurate transmission of fuel level data to the gauge.
Instrument cluster malfunction: The problem could be with the instrument cluster itself, where the gas gauge is located. If there is a fault in the cluster's circuitry or display, it may cause the gauge to always show a full reading.
Gauge calibration issue: In some cases, the gas gauge might be improperly calibrated, resulting in it always displaying a full tank. Recalibrating the gauge might resolve the issue.
To address this problem, it is recommended to take the vehicle to a qualified mechanic or an authorized Dodge service center. They will have the necessary diagnostic tools and expertise to identify the exact cause of the issue and perform the required repairs. They may need to inspect the fuel level sensor, check the wiring connections, or evaluate the instrument cluster to resolve the problem.
when you turn on your ignition to the point before engaging the starter all your warning lights should light up. The Engine Check Light is very obvious, except they throw convention to the wind and show it as 'Service Engine Soon' lamp 'Malfunction indicator lamp (MIL)'.
Page 63 - Section 2-7 Instruments and controls
Malfunction indicator lamp (MIL) If this indicator lamp comes on steady or blinks while the engine is running, it may indicate a potential emission control malfunction. The malfunction indicator lamp may also come on steady if the fuel filler cap is loose or missing, or if the vehicle runs out of fuel. Check to make sure the fuel filler cap is installed and closed tightly, and that the vehicle has at least three gallons of fuel in the fuel tank. After a few driving trips, the lamp should turn off if no other potential emission control system malfunction exists.
Most likely just a faulty ground connection. When something electrical goes wrong, always check the ground FIRST. You already know the gauge itself is working, because it will move on it's own. It has to be grounded well in order for the sending unit in the tank to show proper reading. If all grounds are good, it would be a faulty sending unit in the tank. Best to check ALL connections.
My best guess is yes. The computer is probably registered a malfunction in that line. The best way to find out is have vehicle scanned at autozone or similar.
Blinking of Check Engine Light may be due to:
- Misfire (Ignition system malfunction).
- Evaporative system malfunction (Gas cap, fuel tank leakage, canister, vacuum leaks).
- Catalytic converter.
- Wiring and connectors.
It is better to have the car be diagnosed properly with a suitable diagnostic tool and to retrieve the error codes and freeze frame data to locate the problem.
It sounds as if the fuel tank sending unit is faulty. This is a small float connected to a variable resistor on the fuel pump/sending unit assembly. Unfortunately this assembly is fairly expensive (over $300) and the fuel tank may need to be removed to replace it.
there is a sending unit in the gas tank, just a float attached to an arm moving a variable resistor. you need to pull the tank and replace it. given the age of the car and the labor required, you should also replace the fuel pump while you are in there if that year had the pump inside the tank. i would also call around to fabrication/machine shops and see if any of them can flush the tank. you would be surprised at what accumulates in there over the years.
you need to replace the fule gauge sending unit inside the fuel tank, as far as the waring messages go u need to have the system tested for a fault code that is stored when these lights come on, the requires a trip to the MB dealer.
You don;t say whether the fuel gauge is reading accurately, or whether it's always on empty. If the gauge is always showing empty, it's most likely a problem with the sending unit in the fuel tank. Check the resistance across the two terminals of the sending unit.
On a C900, the fuel sender level unit is separate from the fuel pump
and located on the right side top of the tank, accessible by removing
the trunk floor lift up panel (the pump is located on the left side top
of the tank. Possible problems are: electrical line off or broken, float not working (it's fairly delicate); or gauge not working.
Test
the resistance of the sending unit with the lines disconnected, the resistance should be
2.6 to 3.8 ohms full tank, 63.3 to 67.5 ohms empty tank; and test for
voltage across the top of the sender unit, if no voltage, that's likely
the problem!
If the gauge is otherwise reading accurately (showing 'full' for a full tank, etc) then the problem is likely a gauge malfunction and can be simply replaced.
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