I just replace the engine in my car and I had new plugs and wires put in as well. Ever since the new engine, the car doesn’t go up hills well and it is very sluggish from a stand still position. As long as I am driving on a flat surface I am good once I get up speed. I went to autozone and I got a P0300 code. Is this a bad ignition coil or maybe a clogged catalytic converter? Thanks.
That code should be for a random misfire and the first suspect might be the crankshaft position sensor.
I’m also assuming by new engine that you mean a new or remanufactured engine, not a salvage yard unit.
Is the CEL flashing?
To be honest it is a salvage unit, and the cel is flashing.
the code is for a randome mis fire sould be a crank or a cam sensor. did you hear the engine run b4 you put it in the car?
A flashing CEL is VERY BAD… It is telling you that if you keep driving the car, damage WILL happen. Who sold you the motor? Did you get a warranty? You may need it at this point… Have you been looseing anti-freeze by any chance?? I have a theory… Let me know about the antifreeze
Yes I do have a warranty. I have not had any lost with anti-freeze.
I wonder whether that new engine is timed right. No doubt it is a rebuilt engine?
Maybe the belt is one tooth ahead of where it should be.
I would double check to make sure the plug wires are properly installed in the right positions. However I would not drive the car until that flashing CEL has been addressed as a flashing CEL can indicate a situation that could cause damage in you attempt to drive it.
I’d want to make sure there’s nothing wrong with the timing. Salvage can mean you bought someone else’s trouble.
Hey guys, I wanted to give you all an update on my situation. My catalytic converter was clogged and being that money is an issue I had it straight piped. I will save up to get a new one so that I will pass my emission test. As far as the random misfire and the flashing CEL. I had two wires crossed on the tuneup. When the wires was placed in its proper alignment on the ignition coil the misfire went away. The CEL ins’t flashing anymore.