[jay92]

At idle the engine sputters and wants to die, untill I remove the hose at the top of the air duct boot in-between the air flow meter and the throttle valve. With that hose removed the car picks up and zips along in first through third untill it reaches 3500 RPM in each gear, and then begins to sputter and buck. (air flow meter?, throttle valve chamber?, coil?, vacume?,)
I have replaced the air flow meter twice with my local Pic-n-Pull (playground),

Thanks for your time.


P.S. what is the proper timing for my 1980 280zx. The data plate under the hood is gone.

 

[fumar]

you probably washed your engine previous to this problem right? there is a 3 prong electrical connector near the throtle body chamber that controls opening of the throttle chamber at engine speeds above approx 3000 rpm if you open it up and there is water inside, dry it off with a q - tip and leave it set unplgged overnight. you may also want to spray some electrical parts cleaner in there. you are having a short in that plug that causes your throttle body vale to close instead of open at >3000 rpm so if it wasn't wet it may just be corroded from when it got wet over the years and will have to be replaced.jay92 wrote:
>
> At idle the engine sputters and wants to die, untill I remove
> the hose at the top of the air duct boot in-between the air
> flow meter and the throttle valve. With that hose removed the
> car picks up and zips along in first through third untill it
> reaches 3500 RPM in each gear, and then begins to sputter
> and buck. (air flow meter?, throttle valve chamber?, coil?,
> vacume?,)
> I have replaced the air flow meter twice with my local
> Pic-n-Pull (playground),
>
> Thanks for your time.
>
>
> P.S. what is the proper timing for my 1980 280zx. The data
> plate under the hood is gone.

 

[jay92]

If you are talking about the throttle valve sensor, I have checked and it is working propperly. According to my Haynes manual. I just found a post that sugest checking the fuel pressure at the harness. If there is another component that controls the throttle chamber please let me know. thank you for your advice and consideration.