Question: My 2001 Chevy Cavalier revs high in Idle and jumps between 1-2 hundred RPM's unless I am driving, but the second my foot goes on the clutch it starts again as well when in neutral. I cant' hold a speed in the gas and I am wasting gas like nothing. As long as my foot is not on the clutch it doesn't make that sound (unless in idle). When driving i have to constantly watch my speedometer because i cant maintain a speed. Can some one help me please, I am going crazy.
Answer: the first thing you need to do is have the computer trouble codes scanned. I would assume that the check engine light is on. Getting the codes scanned may give an indication as to where the problem is. You can have that done for free at most of the large national part store chains.

The fact that you are wasting a lot of gas makes me think that maybe the fuel pressure regulator (FRR) is leaking. When they go bad they leak gas into the vacuum line attached to the regulator. This gas go straight into the engine. That may explain why the cars going faster than you wanted to. It would also explain why your rpm's are going up and down.

Run the engine for a few minutes until it gets warm, then shut it off and unplugged the vacuum line from the fuel pressure regulator. Do that after the engine has been off for about 5 minutes. If there is any sign of gas or even the smell of fuel in that vacuum line than the regulator needs to be replaced. If your engine is the 2.2 L four-cylinder, then the regulator (FPR) is on the fuel rail, on the driver side on the back side of the valve cover. It is a little tough to see because the fuel rail cover goes over it. If you have the 2.4 L engine, is also on the fuel rail but the fuel rail is up front of the valve cover.

The regulator is located on the passenger side end of the rail. Either way there is a vacuum line attached to it that needs to be checked.
2000 chevy cavalier 2.2 L 4 CYL.
Question = I know this is a shot in the dark and I am sorry for bothering you with this question. I just cant seem to get a straight answer from anybody. If I replace the IGN module and it mounts on a heat shield that keeps it off the engine about a 1/2 inch is heat sink required or not. None came with the module.

Some say it doesn't matter because it has protection inside the mod as well as the shield. Should I take it off and apply the heat sink paste?
Answer:
I would put the paste on. Not only does this help with the heat, but more importantly helps make a good ground. The shield acts as a heat shield, but also ensures the module has a good ground.
2001 Chevrolet Cavalier Idles High And Jumps

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