Fuel gauge out and speedo

It may be that the speedo and temp are mechanical, whereas the tach and fuel are electrical. Check fuse for inst. cluster for clean and tight fitment. Check electrical connection at back of inst. cluster.

Check fuel pressure with a gauge on the motor
Check volumn as well

See if the fuel pressure holds KO/EO

The common fault is that the fuel level sending unit is defective inside the gas tank.

Hi Mcguffeyo, I believe you have two separate problems. The speedo problem will be sorted out by replacing the speedo cable and the fuel gauge by attending to the cable connections or the sender unit inside the tank. Regards John

check and see if the cable from the back of the speedo is connectedto the top of the transmission .I have had the same problem with my 91 crx and thats what it was.hope this helps

let me know what vehicle you are needing help with then i may be able to help

The speed sensors will not fix it. This is something that these cars will do in hot weather. The instrument cluster need to be removed and the contacts from the printed circuit to the connector need to be cleaned. Over time they will lose contact and affect the fuel gauge or speedometer. You may have to replace the speedo cluster. Sometimes if you hit the dash just above the fuel gauge it will start working too. Been there done that, fixed mine as the printed circuit was coming apart at the harness connector.

those are very good of loosing fuel pump relay .
And if you ck ignition components and they are ok , then ck fuel pump relay(main relay).

if the gas gauge worked before i would just double check the connections to the fuel pump and make sure they are tight.

check your speedo cable it runs from your transmission to the back of your gauge cluster. its probleby broken or disconnected