Question about 1988 Nissan 300ZX

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1988 Nissan 300ZX Its been running fine, then I went and got an oil change, new tires, and alignment, now, it does not want to idle, and it bogs down when I am trying to drive it, like its not getting enough gas or air, (air filter is clean), or something. It starts up right away. Garage put it on a OBD2 scanner, and it said nothing was wrong with it.

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Try changing your fuel filter. Check your mass air flow sensor. That might be going out. Or someone at that shop you went to tampered with your Idle level.

Posted on Jan 12, 2012

  • Bill Hackett Jul 04, 2014

    Check for a false air problem. This is when there is air is leaking between the throttle body and the air mass sensor. a cracked boot will do it. There are a series of hoses which hook up to the plastic intake section that is before the throttle body an air leak at any one of these can create a problem.I don't know if I would be leaning torwards the fuel filter because they don't just clogg up immediately, you would notice a loss in power at higher speeds and during hard acceleration.. As one person mentioned above, an air mass sensor cancause this condition. Often another symptom which would go along with this proble might be a popping through the intake wnen trying to acceelerate. If was running fine before these servces, an air filter isn't just going to cllg up and restrict the air flow unless somene put a rag in the intake housing which might allow just enough air to pass by it to cause that condition. I would be looking at the hoses between the air mass sensor and the throttle body first. I just cant see anyone tampering with your idle adjustment aside from the fact that the problem would notcause any of the other conditions.



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