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Re: car problems and
Good question, but they are not related, they are on 3 completely different circuits and un related in anyway, the gas guage is most likely the sending unit in the gas tank is defective, the check engine light will require a trouble code test of the system, any Kragen or Autozone can do this, it's free.
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Your temp.gauge is probably bad ! Check for voltage at the coolant temp. sender ! You have to check it with the engine running . The red with white stripe should have a voltage the other wire ,yellow with red stripe is ground side ! Instrument panel fuse box fuse # 15 a 10amp fuse powers the gauges ,if your gas gauge works it's not the fuse . The dome lights get there power from an other fuse an circuit ! Did you check the bulb ? Check fuse # 8 IP fuse box , also a 10amp . Check for voltage at the dome light ,switch on !
Try disconnecting the sensor. then turn on the ignition switch and see what the guage dose. If it still goes to the top, chances are there is a short in the wiring. If it does nothing, chances are you have a defective sensor.
First what had abnormal reading ? it is not the gage needing service
Fix the problem gage show (low gas,hot,voltage etc...low ,flasher on to long , coolant ,low brake fluid ...)parking brake on! Tcc , ABS,SRS light, check engine ,It tell you to see you gage check and fix the problem an check gage will come out
The fan staying on for a few minutes wass just the fan and sensor trying to bring the temp down at the radiator.
As for the AC shutoff warning, you may not have enough coolant to keep the engine cool. With the engine off and cold, check the radiator and the overflow jug, ensuring they both have the proper amount of coolant. If either is low, fill to specs and drive the vehicle to see if it stays cool. If filling them doesn't fix the problem, you may have a stuck thermostat.
When the engine was running hot, did you notice if the fan was running or not? If it was not, then you may have a fan sensor going out. If it was, you may have a low coolant or thermostat problem
Depending on the engine that you have most of the coolant level sensors are mounted in the radatior about a foot down below the fill cap. They often had problems with these sensors getting debris on the end's of them causing a false reading. What your looking for is a black box about an inch and a half square and about 3/4 inch thick .you can try to remove it and clean but the best way is just to replace
CHECK GAGES light (1) indicates a potential engine failure(low oil pressure, low coolant, coolant overheating) has occurred. · Check gages and shut down engine. Gages should read as follows: Oil pressure 5 to 10 psi (34 to 69 kPa) at idle; Water Temp gage below 230 degrees (110 C).
· Check engine oil level (Para 2-11) if OIL PRESS gage indicates low reading. Check coolant level (Para 2-11) if Water Temp gage indicates high reading. Notify Unit Maintenance if levels are low.
If CHECK ENGINE light (2) is on, check engine oil pressure gage (3) and water temperature gage (4). If both indicate normal, proceed with mission and then notify Unit Maintenance. If either one does not indicate normal, stop engine immediately and notify Unit Maintenance
This is a COMMON Problem that GM had with the Level Sensor Curciut, And they Never Correctly Addressed it. I Have on ocations Replaced the Sensor and that Corrected the Problem, BUT Other times the Light STAYS ON No matter What, I have tracked the Wires and all I Have Ever Found was the Plug Being FAULTY. So if A NEW Coolant LEVEL SENSOR Does NOT Turn off the Light, try Replacing the PLUG Itself.
That may be a sign of a bad alternator. start you car and take the positive batter cable off the battery. If the car dies replace the alternator. That is a really good sign that your alternator is bad.