ZCar Forum banner

Status
Not open for further replies.
1 - 8 of 8 Posts

·
Registered
Joined
·
49 Posts
Discussion Starter #1
I have a '76 280Z and I am having a problem. At first the car would just shut off after about 15 minutes of driving. It still turned over fine and a couple of minutes later it would go again. The shop said that after the car got warmed up that the fuel pressure was dropping to zero. So, I replaced the fuel filter and fuel pump. I then took the car out for a drive and after about 15 minutes it died and it won't start now. It still is turning over fine but it won't start. What could be wrong? Someone said something about the computer in the fuel injection was shutting off. Can anyone help me?
Austin
 

·
Registered
Joined
·
107,695 Posts
It's most likely the ingition module has gone
bad. It's the little black box on the side of
the distributor. But I could be wrong. These
things are affected by heat a lot.

> I have a '76 280Z and I am having a problem.
> At first the car would just shut off after
> about 15 minutes of driving. It still turned
> over fine and a couple of minutes later it
> would go again. The shop said that after the
> car got warmed up that the fuel pressure was
> dropping to zero. So, I replaced the fuel
> filter and fuel pump. I then took the car
> out for a drive and after about 15 minutes
> it died and it won't start now. It still is
> turning over fine but it won't start. What
> could be wrong? Someone said something about
> the computer in the fuel injection was
> shutting off. Can anyone help me?
> Austin
 

·
Registered
Joined
·
1,299 Posts
Agreed. Your type of problem can be difficult to track down but a good place to start when a problem doesn't appear until after a short running time is with something that breaks down due to heat. Cracked coils will work fine until they heat up. Then the cracks will open and break and if you have only one coil per 6 cylinders (which I think is the case with the older 240/260/etc) then the car will die. Leave it a while, the coil will cool down and hey presto, everything works again. Some later model nissan's have a coil per cylinder - pulsars.

Hope this doesn't put you off track.

> It's most likely the ingition module has
> gone
> bad. It's the little black box on the side
> of
> the distributor. But I could be wrong. These
> things are affected by heat a lot.
 

·
Registered
Joined
·
680 Posts
> Agreed. Your type of problem can be
> difficult to track down but a good place to
> start when a problem doesn't appear until
> after a short running time is with something
> that breaks down due to heat. Cracked coils
> will work fine until they heat up. Then the
> cracks will open and break and if you have
> only one coil per 6 cylinders (which I think
> is the case with the older 240/260/etc) then
> the car will die. Leave it a while, the coil
> will cool down and hey presto, everything
> works again. Some later model nissan's have
> a coil per cylinder - pulsars.

> Hope this doesn't put you off track.

It might be the Atinator it was would run cold and charge and then when it got hot That after 30 min it would stop charging and the motor stoped. I got that replace and it works like a charm
 

·
Registered
Joined
·
787 Posts
Yea it does sound like the ignition module. look into getting a whole distributor it's cheaper than buying both seperately and if the distributor is original it is about time to replace it anyways.

> It's most likely the ingition module has
> gone
> bad. It's the little black box on the side
> of
> the distributor. But I could be wrong. These
> things are affected by heat a lot.
 

·
Registered
Joined
·
1,067 Posts
The 76 doesn't have an ignition module.
It might be a distributor pickup; or the coil. Also don't rule out the F.I. temp
sensor.
If you have a manual trans you'll have 1 pickup.
If an automatic you'll have 2 pickups. advance and retard. For an auto trans
the car should start on the advance then when its reached a certain predetermined
engine operating temp the retard kicks in.
Most likely the coil-pickup.
good luck . let us know what it was when fixed.
 

·
Registered
Joined
·
107,695 Posts
> The 76 doesn't have an ignition module.
> It might be a distributor pickup; or the
> coil. Also don't rule out the F.I. temp
> sensor.
> If you have a manual trans you'll have 1
> pickup.
> If an automatic you'll have 2 pickups.
> advance and retard. For an auto trans
> the car should start on the advance then
> when its reached a certain predetermined
> engine operating temp the retard kicks in.
> Most likely the coil-pickup.
> good luck . let us know what it was when
> fixed.

Funny Im having thesame problem with an 83zxt. I just put in new NGK plugs. The car statred right up it sat and idled for a good 1/2 hour, then I put it in gear and backed out of the driveway and it died and woldnt restart. i checked the wire frome the coil and there was no spark. I waited a little while and it started again then shut off again. These cars are such a mystery. Any ideas
 

·
Registered
Joined
·
107,695 Posts
> My 83ZXT had exactly the same problem, I replaced the distributor(crank angle sensor ) and now it runs fine. I tried the Coil, and Transistor, but it turned out to be the Dist., opening up as the car heated up. My reman dist cost me $350.00 . It took 5 minutes to replace.

Good Luck
 
1 - 8 of 8 Posts
Status
Not open for further replies.
Top