hey every body .. i hadnt drove my 280zxt for about 5 days then i started it up , i let it warm up as i normaly do about 5 min warm up.. then i drove it down the road with pirde 1st gear 2 nd 3rd no problem i came to a stop took a left 1st gear shifted to 2nd then complete DEAD... i had to push my baby to the side of the road becuase she didint want to start.. i notced when i opened the hood there was a werid sound coming from the valve attached to the AFM ? i couldnt figure out wat was wrong this have never happend before.. the car did start and i drove it home... any ideas ?

 

the valves next to the AFM are the vacuum control modulators for the idle control and EGR valve's. Neither is likely to make your car quit like that though. If it happened going around a turn I'd suspect a loose connection or faulty wire somewhere. How long til the car started back up?

 

Is your blow off valve mounted on yet? If not, check the grounds to your battery, the connections to the coil, and check to see that your EGR tube isn't clogged or getting stuck open.

 

well i had to let the car sit becuase i was already late for work so p iarked it on the side of the road ..i came back to it after work was done 10 hours then the car started up just fine i will double check everything tomorow.. as its my day off.. and no i havent got my BOV yet..

 

It could be an early sign that your ignition module is going bad, or maybe your coil is. Take your car out for a drive and see if the process repeats if when the car is warmed up.

 

im thinking its the my coil right now becuase i had a problem like that before on my 1983 280zx n/a/ ,,, i have bought a high performence coil.. drove around for about 50 miles then the same thing happened.. engine goes dead.. does any body know any high performence coils for a 1982 280zx turbo ? would hte ps20 coil work that motorsportauto sells ?

 

Distributor

When it dies, you should leave the key on and wiggle the connector on the underside of the distributor until you hear the injectors click once.

Then you can usually drive the car.........until the next warm-up cycle.

 

why would jiggling the CAS connector make the injectors click?

 

ok well i have been driving my turbo car alot latly but does any body know why in the h#ll that little vacum on the side of the AFM would sound like its about to explode and the car wouldnt start ? anyways i got awsome news !! NismoPick i got my Xs power Blo off valve on the car.. omg !!! its sooo loud !!!

 

The diaphram may be leaking or stuck. Which one is making the noise? The IAC or EGR modulator? We need a "My car wont start" thread.

 

Because the module in the distributor is experiencing an open circuit that occurrs because the potting or conformal coating of the electronics expands at a different rate than the metal traces.

Wiggling the connector can temporarily restore the connection..........until the next warm-up cycle.

 

im 100% its the iac sounds like it was like over pressureized or somthing... u could hear air coming from it...

 

That still doesn't explain why jiggling the CAS connector would make an injector click with the car not running. Sure it explains how a positive connection could be restored (though, it's still a long shot that this would work on the CAS connector due to it's type), but it doesn't explain why voltage would momentarily shoot to the injectors with the engine not turning The ECU needs the pulse signal from the spinning CAS wheel in order to know when to fire the injectors. An injector is not going to fire if the engine isn't spinning.

 

That all depends on which trace is cracked.

I've been doing it since these cars were new and I just thought someone would want a shortcut found in my 20+ years experience on this car.

If you want to refute me, you will have to get into component level discussion of this unit and understand how it works..............at the component level.

 

awww ok... anyways i got my turbo xs power blow off valve on and it sounds awsome ! im boosting to 10 psi switching gears at 4,500 rpm and u can hear it like 2 blocks away its loud... ! any ways i havent had any problems with that valve.. yet.. so maybe im in the clear ?

 

I'm not refuting you, I just want to know how it happens. Thats all. I've spent countless hours studying the EFI on these cars and understanding exactly how everything works together. There isn't a component on this engine that I couldn't tell you exactly how it works and why. I'm by no means an expert, but I do atleast know how everything works. So again, I'm just asking for an explanation.

 

I figured explaining it would suffice as an explanation on an earlier post.

 

Could you bring my Chapstick? My lips hurt real baaaad! Gosh!

 

Dont' be jealous, because i have been looking at sweet z cars, on line, all day.

 

thats like the worst fuel injection system ever made... you guys are retarded!

 

But that explanation still doesnt explain your point. Sure it explains how a connection could be restored, which I also stated earlier. I'm still waiting for the explanation on how it makes the injectors fire without the motor spinning

 

I just did.

First you would have to an understanding of how caps, transisitors, and diodes work for me to properly explain how an intermittent connection can cause pulses.