bad sending unit in tank, or short in wireing.
The fuel gauge on a 1985 Chevy Silverado will read full all the time if the sending unit is defective or the wire has come loose. When the tank is full, the sending unit normally shuts off which cause the gauge to read full.
Well, usually there are several possible problems that can do this. Some of the more common problems that people experience with their fuel gauge is that it reads empty at all times, another is that it reads constantly full, but the most common problem is when the gauge will read differently at different times, fill the tank and it will read empty, be about a quarter of a tank down and it will read full, that sort of thing. In the more common cases, the problem is with the fuel level sending unit, I do not know much as to how to fix it, but I have seen several websites that give advice on this problem.
It means the filter needs replacement
probably the sending unit. unfourtunatly the sending unit and fuel pump are made in one peice, so expect it to be expensive
It would be better to write: My gas gauge reads empty. Note that 'gauge' is singular, so it needs the singular verb, reads. If you had several cars all with gas gauges that read empty, then the verb would be read.
You have a grounded sending unit. If the gauge reads full all of the time then there is a bare wire or the sending unit itself has gone bad and grounded out. I also had the same problem after i swapped my fuel pump with one out of an older car that had been sitting for a couple of years. The float was either stuck or not working i just put the old one back in after i found out that it wasnt the problem with my car.
The way to test the gauge is to unhook the wires to the sender and the gauge should read empty. Now, ground the sensor wire and the gauge should go all the way past the full level. If this happens your wiring and gauge are fine.
A potential bad gauge or sender unit in the tank would cause it to read full all the time.
A Toyota Camry can hold 6.7 quarts of coolant when it is bone dry. You should add the needed liquid so that it reads at full at all times.
bad ground or float stuck 2 possibilities i can think of
Bad sending unit, corroded wire from the sending unit to the gauge, faulty fuel gauge are a few.
Check the fuel gauge sending unit, located in the fuel tank. The sending unit could be stuck in the full position.
Need a full description of all markings.
There is a sending unit laocated at the fuel pump that sends info to the gas gauge. This can malfunction with no reason at all. I am betting that this is the reason since your gauge still moves. If the gauge is bad usually it wont move at all and is not a common thing now a days anyway. The sending unit is more common. Hope this helps.
1984, Corvette the fuel gauge stays at 1/2 full all the time. Plaese help.
why won't my gas gauge work all the time.it will read full when i fill it but after that as i drive i am not sure how much gas is in the tank
If all the connections and wiring look good, it is probably the fuel gauge sending unit in the fuel tank.
never mind, I fixed it. I had a break in the wire from the tank selector switch to the gauge cluster. Funny thing is that wire runs from the switch out the firewall and down the left frame rail with the wires for the level indicators then runs across to the right side and up the right frame rail to the main wiring harness on the right side of the engine. My break was on the right frame rail near the transmission. Took me all afternoon to find the stupid thing.
Start engine and put A/C on Max. Connect full 134a can with gauge to fitting on large line just before it enters receiver/drier (round cylinder on firewall). Run engine at approx 1200-1500 rpm until all refrigerant is suctioned from can. Repeat with fresh can until gauge reads 30-45 psi.
Usually there will be a repeating chirping noise during engine running, also your tempurture gauge reads hot . with me, i was leaking antifreeze/coolant, but not all the time
Typically when a fuel gauge reads incorrectly it is the fuel sending unit in the fuel tank.In order to determine where the problem really is accessing the fuel sending unit on newer cars is fairly easy.Most have a access area either from removing the bottom of the back seat or from the trunk area under the carpet.In short if the fuel sending signal wire is grounded it should make the gauge either go back to empty or to the full mark IF it is not working properly.Just a simple check to verify if the part above is defective,or possibly your gauge itself has a electrical issue.I just recently fixed a exact issue as I have done before gauge read full and already knew the problem.
Most of the time it's the fuel level sender in the fuel tank if your gauge moves around a bit but doesn't read correctly. If the Gauge is stuck on full all the time, the gauge itself is broken.