my car is dc4 with ls block and gsr head , it was really funny and scary at the same time.
there are like a little noise like something is loss while i applied for gas ..i have the same problem... but it only happen when it in gears and driving down.. if i hit a bump.. that noise get worse..then the car started to hesitate and then misfire .. but if i turn off the car and start it back up then it fine, if i release it , is gone.
i hate that noise , then this morning me and a friend was just going to get my car a new tire , then i hit a bump then suddenly i throw it back to neutral and then the car just die, then i start the car up again then rev up to around 3k then it just died again, then i turn the key completely off and then start it up then it fine, it doesnt die out . I been noticed that everysingle time i hit a hard bump ..the noise on the driver side get worse , and then i proceed to head home and while im heading home , i hit one of those nasty bump from the freeway then the car does it again , and this time , the motor was backfire and hesitated , i turn the car off while in neutral then started back up and then it drove fine . i just done change the spark plug .. anybody having the same problem ?

 

any1?

 

Seems like you have a loose wire or connection somewhere.

 

^x2. check your grounds.