Ok, this is a long drawn out problem.

I drive the car (79 280zx) around the city everywhere. i go to and from, car runs perfect and idles at a perfect 800.

i get on the freeway and travel for about 10 minutes or more and it starts missing. i can hear it missing more when i let of the gas just a TAD. when i exit the freeway and hit the red light, my car is stumbling and missing VERY bad. it almosts sounds sick.

i will then proceed to ignore the problem ( i always ignore problems) and drive the car to my destination. within a few minutes, my engine is running smooth and perfect yet again.

now this is driving me up the wall. i cant merely pop the hood and figure out thwn is wrong at idle. it only happens on the freeway and when i exit. now, i cant have somebody in the engine bay while im on the freeway, no can i? is that legal??? hmmmmmmmm *scratching head and rubbing chin*

anybody have a solution to this problem or know the cause of this hair pulling experience?

David Karey
SoCalZ Prez
http://www.socalz.org

 

Hmm...I've heard of alot of TPS issues with our Z's...I wonder if...follow me here...you are loading up on fuel while keeping your foot in a certain position...

Just for giggles, try swapping on another TPS if you have one laying around...

Bill
77 280Z
www.dsetuning.com

 

hrmmm....i will do that


SoCalZ Prez
http://www.socalz.org

 

My 72' had simmilar problems, stumped me for a couple of weeks. The timing advance on my distributor was sticking, and took a while at idle to settle back to down and run properly. you may be having a similar problem.....


"Z was selected because it represented the ultimate, the "last word" in sports cars"

 

i think you hit the nail on the head.

SoCalZ Prez
http://www.socalz.org