Question about Nissan 300ZX

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My car starts fine,but the feul pump has been humming for along time...after about 20-30 minutes of around town(stop & go)driving,it starts to act like its starving for feul....

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Sorry to say but humming fuel pump is a sure sign that is going bad, change it now before you get stuck somewhere.

Posted on Apr 09, 2011

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I just recently have been fighting the same problem with the same make/model/year vehicle. For myself, I would drive off and on through the day and it would run fine. Then suddenly after a start it would run rough and die. I would have to wait 20 to 60 mins before it would start again. I had it checked and fuel pump was only putting out around 19 psi. It should be around 41 psi. Had fuel pump replaced and no more problems. Furthermore, now it runs so much better. It's funny how over time I didn't notice how the performance was slowly degrading. Unfortunaley fuel pumps for this car run around $300.

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I have a 99 jeep grand cherokee and i put gas in it and drove a 1/2 mile and it stopped accelerating and would not start for 20 minutes now it will start but could this be the fuel pump? All of the...


Cant say if its the fuel pump but how a filter works is when the flow stops the sediment will settle off the filter. If enough sediment is in the filter you will fell power loss after driving for awile.Now if you werent having issues before this doing freeway speeds or gunning it around town I wouldnt suspect a filter from just driving around town. If it were a filter on a vehicle your age it would set a check engine light for running lean,
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If your still experimenting look at the fuel pump realy under the hood in the fuse box and if you have a lookalike like a the horn or ac relay then swith one with the fuel pum relay.

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could be a mass airflow or what ever you have feul filter or a bad feul pump or feul pump connection maybe wires were stretched during engine drop

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