What could cause surges in a Chevrolet 3.4 engine?

Answer by  Darkephoenix (1789)

Could possibly be a fuel pressure regulator. If you take it to an autoparts store they can run a diagnostic and tell you what code is showing up.

Answer by  kennethjgoodson (4903)

It could be caused by the fuel pump going on the car. Make sure you have fuel in the rail of the 3.4 motor when it is started.

Answer by  MC23 (85)

Could be a result of a vacumm leak, which cause the idle to surge. Check for vacuum leak by using soap water, and spraying it on lines, look for bubbles.

Answer by  Amber40 (24961)

The first thing to do is check for codes. This should help you identify or at least get a good idea of what it could be. Without knowing more about the car all I can say is look online for people with the same problem and see what helped them.