I'm guessing you mean that the electrical system is ok. You didn't say whether the check engine light came on. From what you're describing, you're either losing spark or fuel injection. Both are difficult to diagnose in this type forum because of how intermittant the problem is. A lack of spark would also most likely cause the check engine light to come on, so that leaves fuel supply. A fuel pressure test will only show a problem during the problem, so it can be deceiving. The inertia switch, fuel filter, and fuel pump will not show a check engine light, but could all cause your symptoms. I would add a fuel dryer additive to eliminate the possibility of water in the gas, then replace the fuel filter, bypass the intertia switch, look for a loose wire (power or ground) in the fuel supply circuit, and finally suspect the fuel pump. You'll need to do each of these items one at a time, so it's going to take time, especially starting with the fuel dryer additive, as it will take an entire tank of gas to see if it helps.
Good Luck,
mj
Last edited by Mike J.; 08-09-2007 at 08:45 PM.
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