Ok, so here''''s the problem: I''''m driving my car, everything is going just fine until my RPM gauge drops to about 340, then completely down to zero, killing my engine. I tried starting the engine again, but all it would do is turn over. I left it over night until I could get a tow from my brother, and he checked it out himself the next day. The car started just fine, we drove it back home, where it died as I turned onto my driveway.

Before, my check engine light was on, but I took no real notice of it, since the car was running just fine. In light of recent events, I ran a diagnostic and it threw me a "43" code: knock sensor. I''''ve replaced the knock sensor since then, and took it out for a spin. No engine light, but same problem.

I asked my dad at this point, and he said it could either be the fuel pump or the fuel relay. Not being one with much money, I chose the relay, in hopes that that was the problem. Still no dice.

Before I go out to get a new fuel pump, I wanted to run this by you guys here, in hopes that one of you might have run into this problem before.

Thanks, in advance.

Edited by: Shadowhax

Before you keep throwing parts at it, you should take the time to check
and diagnose what your problem may be. When you turn the key to the
"on" position (don''t start the vehicle, make sure it''s in the on position by
seeing all your dumby/ dash lights turn on) you should hear the fuel
prump in the rear of the car turn on to prime the fuel pressure. Make
sure it is turning on and that you have some fuel pressure, you can listen
to it better if you get under the vehicle where the fuel tank is located in
the rear and have someone turn it into the on position. This is only a
simple check, you can purchase a fuel guage tester at your local parts
store and test the fuel pressure off of a test port either located on the
fuel rail above the motor or sometimes the fuel line running under the
vehicle. In order to check what your problem may be you need to look at
the big picture. A vehicle needs fuel, air, spark, and compression to start
and run, check your components starting with the easiest ones for visual
problems and then test these items to see if they are working. Always
remember to check allllll of your fuses under the dash and in the engine
bay before getting your hands dirty. Goodluck and keep us updated on
where you are at.

i had an oldsmobile that had the same problem. the fuse for ignition/guages would blow. never figured out what it was. i beleive it was a bad connection somewhere. good luck