Surging issues

[JDS]

Also might want to run a bottle of Techron through it.

[MEM-TEK]

*****

[hsilman]

^ what he said

There are realistically just way, way W.A.Y. too many things that can cause this problem. Many of them applicable to a wide range of vehicles(like vacuum leaks, weak grounds, EGR clogging and spark plug/coil pack needing to be replaced) however, your specific application may also have a "most common" problem related to it.

In my neon, I'm almost 100% it's the egr which is causing the bucking and surging. However, when my gfs car started doing it (a 95 bonneville) I started with spark plugs and wires, then checked the coils. When I looked online to a bonneville enthusiast website, I was told that the Ignition Control Module is well known to go bad, and was sold one for only $20. Fixed the problem right up, and took about 5 minutes to install.

So my recommendation is to find a group of enthusiast dedicated to your particular car, and go from there. Said group can be had for just about every car in existence, from Ford Festivas to Jaguars.

[V1 Dave]

Good stuff MEM-TEK,

I had a Ignition Control Module done a few years ago but the symptom was stalling in traffic with no warning, fixed it up.

Thing about the EGR, and I forgot until a mechanic reminded me yesterday is even though it is no complicated today it is still no simple to just simply disconnect the vacuum line to it and test drive to find out.

Everyone today is quick to blame the fuel pump because it gets hot and burns out in the fuel tank with low fuel.