i have a question i just got a new motor in my 2001 Honda civic EX and the engine is a 2.7 V-Tec and i'm not sure if it's an '04 or '01 but anyways when it gets too about 4000 rpms and it starts jumping like crazy but i take my foot off the gas and its fine until it hits 4000 rpms again then it starts jumping again. whats wrong and what should i do???

 

Thanks for the welcome guys.Viper it might sound bad but it happened to me twice.
It may be the oil level

 

the oil is fine but i'll double check any other ideas?

 

What's the serial number on the engine? If it starts with a 4, then it's from a 2004 vehicle.

Has the MIL come on? (aka check engine light)

Have you scanned the car for codes?

Have you tried resetting the PCM?

 

2.7 V-TEC huh? Sounds like you bit off more then you can chew...