So I have a 1994 VX hatch. When I put it in first and step on it the engine starts to sputter and wants to shut off and my check engine light then goes off and a green arrow pointing up comes on. This doesn't happen if I'm babying the car and not stepping on it. It also happens if I'm in gear driving and I hit a bump. For you guys that might say that arrow is a shift light I do have rpm guage. Any ideas thanks in advance