Stevemd24
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Posts posted by Stevemd24
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Lol do u take payments
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no i said i replaced the ecu i guess i could buy a stock one and see what happens
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not sure why the timing would be off, it was fine before, like i said it happened in mid trip,
there is a signal going from the maf to the cpu (pin 27) but for some reason the cpu isnt reading it, but i have replaced the cpu, lol i really think its the nistune itself, best way to check it is to just plug it into another car takes less then 5mins, but i need to find someone with a Rb20det engine with a nistune chip
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My vote is on a bad ECU then. You tried a different ECU yet?
yes i have bought a new ecu, it doesnt fix the problem
i tried a new maf
i have tried a new wiring harness
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Unplugging the MAF does nothing,
I have changed the MAF THE ecu and the wires running between them...
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Not really sure how i can go in more detail, It runs in limp mode, Means the ecu uses a safe default map to make the car run but not run well... It chokes, back fires, the mixture is incorrect. anything over 3000 rpm and it shutters and almost dies
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this is what happened
My car was fine as i drove to Safeway, when i get back in after shopping, it ran poorly,
I took it to auto mechanic that said he could fix it he had my car for 6 months, and then sold it to another guy.. the new guy said he could fix it,
He said the wiring harness was bad and its probably whats wrong with it, so i bought a new harness from wiring specialties (it looks great) it cleaned up my car and i am impressed with the results but it did nothing to fix my car,
He said i should change the power pack cuz it was crap, and while i am at it my auto gauges, so i did, I got a new power pack and i bought some sexy ass gauges from speed hut, still didn't fix the problem
My mechanic then said he had to be my ECU since my Maf Is showing a signal on the scope going to the Ecu, but the signal gets "lost" in the computer and it shows not having one...
I bought a new ecu I had the nistune professional soldered onto it. It still didnt fix the problem, at this point my Mechanic gave up and just gave me back my car,
I sent my ECU with nistune attached to it, to auto Vaughn performance he saids the the board looked good but he is going to reflash it just in case there is currpted data, and my soldered looks solid.
He did it for free so i was happy with the service,
got the Ecu back but my car is still not working, SO everything from the maf wires ecu have all been replaced, there is not much left i can do, i am at my wits in, i need someone that can look at my car and fix it, I live between san fran and Sacramento, and i cant find a decent Mechanic that can help me out, Id be happy if i could find someone with a rb20det engine to send my ecu to, so they can plug it into there car and at least eliminate or norrow down the problem to my car.
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I had to reorder the cable i seem to of misplaced mine, but i will be getting back to you guys with i get it
o and merry xmas
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I can commuicate with the software. yes
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I have a Rb20DET. It Runs as if its in limp mode,(super rich runs bad at 3500 rps or higher) but it throws NO Codes at the ecu,
ITs has a Nistune, Type-2,
when i got the car it ran fine, but on a random start it started acting funny, so as far as i know its nothing I physically did to the car...
with a oscilloscope it showed a signal on the signal wire, pin number 27
The wiring harness looked like crap so i replaced the harness from a custom one from wiring specialties,
but anyway that didnt fix the problem, and who ever built the car used like a 1980 power pack from a firebird or something so i replaced it with a new RB power pack
To make sure its not the MAF i put in a good stock MAF (had a z32) Still didn't fix the problem, I went on to replace the ECU and had the Nistune re-flashed just in case it had currpted data
Now while the car is running it runs the same with the MAF plugged in or not, So I am pretty positive the problem lies between THE MAF or the Ecu,
does anyone have any suggestions?
I personally was thinking I could maybe find someone with an RB20det and plugging in my ecu/nitune board into there car and see if the problem shows up in that car...
here is a vidieo link
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Thanks for the ideas got to wait for the weekend
dam real job gets in my way -
the cas and maf have both been changed out and tested, did not fix the problem,
I thought it should be a sensor but its not coming up in the trouble codes or checking everything with an osciioscope,
at this point i am looking into the nistune software... but i am grasping at straws at this point
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Driving on my way home I had made a stop at the store and came back to start my car to find out that it went into limp mode,
the car starts and stops just fine, and idles fine, but when hit 3500 rpms is just craps out on me
it is a 240z 1972 with
RB20DET / 5spd Transmission
Rb25DET Turbo
Nistune, Type-2, board
the computer is not giving off any codes, and i am having a hell of a time trying to figure out what is wrong with it...
Can anyone give me any suggestions
Thank you for your time and input
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I need to replace my coil pack and igniter for my Rb20det, I am trying to locate a cheap new or used set..
can anyone point me in the right direction on where i can find some....
Thanks
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Thanks Cool whip, I will look into it
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The Car is also longer, So the problem might Be with the drive shaft
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Thank you, as soon as I fix the unknown problem with my car, I will have to look into this more, I have been trying hard to restore my car and keep it looking stockish, lol besides teh more power
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rayaapp2'
My car is currently in sac getting some upgraded wiring, what ac guy would you suggest?
The swap is already done but there is something wonky with it and i am having a professional look it over....
I have zero ac parts from a z or an rb, so it might be a little bit of a chore to get ac in the car, But you have to love ac in the summer time
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I have a a 1972 240z, with an Rb20det with a RB25 turbo in it as well... Currently It runs but after it hits about 3000 rpm it craps out on me. It is giving me One hell of a Head ache I cant seem to track down the problem
I live in Brentwood and would love to show up at that concord thing you guys mentioned, well... once its up and running
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I would like to install some AC in my 1972 240z that has a RB20DET swap already in place, Can this be done? If so What are the difficulties? Any links or thoughts that would help with this endeavor would be grateful
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I like the Gps one you have shown, with the with fuel gauge, turn signal indicators, and high-beam indicator, But i want a non Gps kind, I wrote them to ask if they have one we will see....
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I am looking into gettting gauges that look like the should be in the dash. These do the trick, but...
Just a random Question, Why would you get a Gps speedo? Versus A normal one?
anyway one last question Do you have a link on where you purchased your gauges?
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My 240z rb20det has started doing this, I hit 3000 rpms and my car just chokes,
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How about Carbon fiber over Fiberglass? I thought it was lighter and stronger.... OR am i wrong? Maybe instead of aluminum custom dash, one of CF?
1973 240Z V8 for sale
in Cars for Sale
Posted
why are your wheel wells cracking, how are they installed?
are you a private seller?