Starter does not always engage when the key is turned. When it does start it sounds normal.

I have had the starter check and pass when I try to start the car it turns over but when I turn the key back to run the starter stays in gaged I checked the starter relay is good

The engine starts but there is too much fuel moving to the cylinders, and it is fuming way too much, black fume suffocating the engine. I've changed the refrigerant sensor, it worked properly for an hour and the problem returned. I have then installed the original one, it worked fine for a while and failed once more. When it fails, the rpm tachometer drives crazy.

Change the fuel pump out of my 2012 Camaro and now the gas gauge won’t read nothing

The stereo system, gas gauge, speedometer, oil pressure, trans temperature, electric gauge, interior screen all went nil at the same time.

I have a 1987 Z-28 TPI 350 i put in a 39 Chevy. I have rebuild the engine and it runs great. I have installed a new starter and solenoid ( also i have installed a new 21 fuse wire harness ) but the solenoid spins and won't engage the starter unless you repeatedly try starting it and it eventually cranks the engine and starts. Ive traced back the wires and don't seem to find any issues. I did a voltage test at the solenoid and a got 9v reading. Any trouble shooting tips would be greatly appreciated.

At 1000 rpms it goes to over 7000 rpm,
Temp gauge passes the top while driving and sticks. Car also dies when stopping ( possible map sensor bad). Code 34 getting part tomorrow. Checked grounds look good.

With ignition on the fuel gauge stays on empty