hey peeps !!! its me again today i pulled off the iriduim spark plugs and there a little bit yellow.. i think im running to lean now if i am how do i adjust the MAS air flow sensor ? i know to take off the little black box being careful not to break it open.. but then what do i need to adj whats screw ? and i open it just a little bit right ? please help i want to run a little bit richer than i am now..

 

MAS is diff than AFM... you have an AFM. Did you read J's thread on it?

https://www.zdriver.com/forums/240z-280zxt-s30-s130-tech-tips-275/js-how-rebuild-your-afm-15277/

to adjust the spring, you need an air / fuel gauge. Do you have one hooked up?

 

Dude, adjusting your AFM is a STICKY. Those are hard to miss

 

We need a "head banging on wall" smilie! ah well, this will do:

 

I did some thinking and: The turbo ECU compensates the A/F mixture at idle. Because of this, the turbo AFM has no idle mixture screw. The NA ECU does NOT adjust the mixture, so the AFM has an idle mixture screw to do this manually. That may be part of your idling problem. Try messing with that screw on the AFM. Clockwise = richer. Counter clockwise = leaner. That combined with your idle speed may be causing a problem. Does the car run better on throttle now that you switched the AFM? Or is it both at idle and on throttle?
__________________

 

sorry i ment air flow meter i alwasy get thouse two messed up with my 300zx's... lol krazy me !

 

Amazing! Your thoughts sound just like this thread:

https://www.zdriver.com/forums/showt...t=17452&page=2

 

Here, you want to run richer? I'll sell you this little miracle box:

I can make another one.

 

what is that little box and how would i hook it up ? umm by the way i went down starirs and pulled up the 1981 280zx turbo AFM and it has the screw place but i havent found the screw its solid with dirt im tryingto clean it out right now should it be a + or - ? type screw ? please let me know thanks , ken

 

Well if it's anything like my AFM there should not be a screw. But I guess there are some that have a screw. That little box is a fuel enrichment adjuster. It simply splices into the ECU wiring harness. I was running it on my NA and I'm still working on my turbo swap so I've got plenty of time to make another.

That thing has enough adjustability to make your mixture rich enough to the point where the car wont even be able to run. Right now I'm working on a WOT switch so it doesn't have to be on all the time or rely on a toggle switch.

 

hmm im still diging out the dirt out of the hole.. so far i havent found a screw.. or anything is there a way to take off the little black box and adj the screw inside there? and how much do u want for that little silver box.. and u made it yourself ? is it trully safe ? im not doubting your engerneing skillz... oh by the way u ran over kenny in your z !! oh mygod u killed kenny! lol

 

The little black box is sealed in place with a sealant. It has to be sliced away with a screwdriver or razor blade. Then the lid can be gently pried off. But there's no adjustment scew to turn. There's a little more to it. Read the write up Nismo linked.

As far as the box goes, no it's completely safe as long as it's wired to the car correctly. The worst case scenario is you run it too rich and the plugs may foul out. I'd have to figure out how much it would cost me to build another one to determine the selling price. I may just make a write up on making your own. Anyone with access to a radio shack, wiring diagrams, and a soldering iron can do it. But without a A/F ratio it'll be hard to determine the best setting. I was going to put a built in A/F ratio meter into the box but haven't gotten around to it yet.

 

im pretty handy at budling things im the real mcgaver ! lol but anywyas let us all know how to make one ...

 

It's just potentiometers that allows you to change the ohms / volts that the sensor is putting out... it's like an electrical version of a manual boost controller, but for sensors.

 

Yup. The simplicity is the beauty. But it works and thats all that matters.

 

still no blue printz ?

 

been busy trying to get my car together. It's literally in pieces. Just pulled the head today to replace the headgasket. I ordered a head gasket and cam sprocket and got two head gaskets instead So now I have to wait for that little mix up to get corrected. I'm working on getting the interior back in and getting everything cleaned up to put back in the engine compartment. There's oil on everything. I've just been too busy to do much else. When I'm not working on the car I'm just watching TV or working on my site. Or swinging by here

 

right on jfairldayz.. as for me i just got done putting on new fenderz on my 82 280zxturbo both front left and right.. new light buckets.. new head lights.. umm sand paperd and primed the fenders to match the hood ... looking pretty nice to me.. ill be putting up new pictures when im half way done an all the way done...
just wondering on how to use ( bondo ) the jelly ? and the bondo and mix them both right ?

 

For one, don't use BONDO brand body filler. It sucks ***. It's really heavy & eventually cracks. Whatever body filler you get, make sure it says "LIGHT" on it.

 

Hey nismopick i ran into a major problem the top of my 280zx had been in a roll over accendent there is a large ammount of bondo on top and its already craked can u please help me find the right ype of bondo to use you said somthing about light bondo ? but let me just try and explane what i found , i found it at walmart.. says jelly bondo and hardening bondo like mud ... how does that stuff work ? please help me out thanks , ken

 

Don't buy automotive body filler from a grocery store. If you want to do it right, go to an auto body supply store. I am a big fan (as well as most body shops across the US) of 3M products. Here is a link to their filler:

http://products3.3m.com/catalog/us/e...eme_us_aad_3_0

So... are you going to fix it yourself? Do you have pneumatic sanders (flat & orbital) ? Have you done any body work before? Just asking, cuz anyone can sand down some filler, but it takes time to build skills & knowledge to do it correctly.