Hey guys! This is my first post and I need some help. I bought my car a month ago knowing it needed work. But this is one thing I can't figure out, any suggestions are welcome!
I'm getting some weird vibrations with my engine that's shaking my whole car, not a violent shake but very noticeable. The vibration is very rhythmic and the exhaust follows the rhythm. It's almost like a put put of a old choo-choo train. It only occurs on a cold start, and not so noticeable in the beginning after I start the engine. But builds up, and the vibrations get stronger as the engine gets warmer. If I put the car into drive or reverse, it stops. If I put it back in to park or neutral, it comes back. If I drive for about 10 minutes down the street, put it back into park, its significantly less noticeable and almost non-existent. I could see my RPMs jump around a little, but its mostly hanging around 700-750. And it drives great! Maybe the gas mileage is a little bit on the crappy side, but it seems ok.
I've also have had a P0301 come on and off which may or may not be related. I'm going to switch #1 fuel injector with another one, and same with the spark plug as a first step to diagnose the misfire.
Things that I have replaced:
Spark plugs and wires
Distributor
Exhaust Manifold (still need to re-check torque of the bolts)
IAC sensor
MAP sensor
O2 sensors
Air filter
Muffler
Any help would be greatly appreciated!!!
I'm getting some weird vibrations with my engine that's shaking my whole car, not a violent shake but very noticeable. The vibration is very rhythmic and the exhaust follows the rhythm. It's almost like a put put of a old choo-choo train. It only occurs on a cold start, and not so noticeable in the beginning after I start the engine. But builds up, and the vibrations get stronger as the engine gets warmer. If I put the car into drive or reverse, it stops. If I put it back in to park or neutral, it comes back. If I drive for about 10 minutes down the street, put it back into park, its significantly less noticeable and almost non-existent. I could see my RPMs jump around a little, but its mostly hanging around 700-750. And it drives great! Maybe the gas mileage is a little bit on the crappy side, but it seems ok.
I've also have had a P0301 come on and off which may or may not be related. I'm going to switch #1 fuel injector with another one, and same with the spark plug as a first step to diagnose the misfire.
Things that I have replaced:
Spark plugs and wires
Distributor
Exhaust Manifold (still need to re-check torque of the bolts)
IAC sensor
MAP sensor
O2 sensors
Air filter
Muffler
Any help would be greatly appreciated!!!