Same problem: car dies/bogs down at ~3000rpm under load (updated)

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  • rodpaine
    Noobie
    • Mar 2011
    • 33
    #16
    Originally posted by Andy348
    Just removed the cap and rotor and they looked practically brand new. One problem though, once I reinstalled it and started the car up, its shaking terribly and nearly dying constantly. I haven't done anything else since the last start up (which didn't have these problems) so I figure that the cap/rotor has gotta be bad. I'll try and swap one out soon.
    You moved the spark plug wires in the process of removing the distributor cap. Have you checked the coil wire to see if it's in spec? The other wires from end-to-end?
    Rod's 528e support web site
    A car can be restored many times. It is original only once.

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      • Andy348
        Mod Crazy
        • Sep 2009
        • 687
        #17
        Originally posted by rodpaine
        You moved the spark plug wires in the process of removing the distributor cap. Have you checked the coil wire to see if it's in spec? The other wires from end-to-end?
        I might have moved one ignition wire but I immediately replaced it. Nothing else was really checked.

        I haven't checked the coil or anything because I figured it was only a fuel problem due to the lack of fuel pressure. How could spark affect the fuel pressure gauge (excuse my ignorance)?

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          • rodpaine
            Noobie
            • Mar 2011
            • 33
            #18
            Originally posted by Andy348
            Snip... I might have moved one ignition wire but I immediately replaced it. Nothing else was really checked. How could spark affect the fuel pressure gauge (excuse my ignorance)?
            It doesn't, of course, if you've confirmed that the fuel pressure is wrong and that the Fuel Pressure Regulator is not the problem, since you've already replaced both fuel pumps. My point is that the spark plug wires and their attachment points are all part of the system and they should also be checked. I've seen faulty ground connections for the ECU cause this same kind of intermittent power problem. You really need to check everything involved, since several problems can combine to create such problems, as I show on my website.
            FWIW,
            -Rod
            Rod's 528e support web site
            A car can be restored many times. It is original only once.

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              • sennafan
                Wrencher
                • Jan 2008
                • 205
                #19
                I have the exact same problem and have tried everything suggested. I have also tried a temp sensor. I am getting ready to try changing my wiring harness.

                However a friend of mine told me about a spec e30 project in GRM that was having similar problems that where solved by a new fuel tank.

                http://grassrootsmotorsports.com/pro...laying-doctor/

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