slowmomiata Posted March 4, 2013 Report Share Posted March 4, 2013 well recently i tried to sell my rhd 1979 fairlady, but the buyer fell through so i kept it. i had to clean the gas tank out and hot wire a fuel pump, and then it started, but it was running pretty crappy. all the spark plugs were replaced, the fuel filter is new, fuel pump is new, new plug wires, new oil and filter... so being the curious guy i am i unplugged the afm/maf and the idle jumped up from 400rpms to 800 and idled perferct, plug the sensor back in runs like shit, grab 2 spare sensors and they all make it run like shit. so i left it unplugged and drove it and it runs great, why would this be??? it is a jdm car but it should need a sensor just like every other car ya know, it is a little jerky driving if i am barely on the gas but full throttle or off the throttle it is great. the car is running rich i can tell by the gas smell and cloud coming out the exhaust at full throttle, thats the only draw back i have come across. is it ok to run the car without the afm/maf? having just a filter on the tb sounds absolutely amazing btw, it growls and whistles ridiculously loud lol i like it i just dont like not having all the proper stuff working another question is i am not getting power back to the fuel pump so ran a hot wire and switch,is there any fuseblock under hood or somewhere i can pull power from and have it shut off with the ignition? in my rx7 i did it that way but this has fusible links and i cant find a place to tap into thanks in advance i will make a video of it running and show you all the intake growl its awesome! Quote Link to comment
slowmomiata Posted March 4, 2013 Author Report Share Posted March 4, 2013 help lol??? Quote Link to comment
Tristin Posted March 4, 2013 Report Share Posted March 4, 2013 Do yoiu really need to bump your thread 9min after you wrote it? Its 10pm on a Sunday... its not like its Ratsun prime time. Give people a minute to find it and respond. 1 Quote Link to comment
DarkToonami Posted March 4, 2013 Report Share Posted March 4, 2013 I just want to see picks. May want to buy it for a parts car. Have you tried selling it in the forums ? Never know, someone may want it. Quote Link to comment
cdub42 Posted March 4, 2013 Report Share Posted March 4, 2013 Do yoiu really need to bump your thread 9min after you wrote it? Its 10pm on a Sunday... its not like its Ratsun prime time. Give people a minute to find it and respond. most of us arnt awake AND sober yet Quote Link to comment
slowmomiata Posted March 4, 2013 Author Report Share Posted March 4, 2013 there are the insomniacs out there ya never know and i am keeping it now it runs really good and drives great, everything is solid on it suspension wise i just want to get it running with the proper electronics Quote Link to comment
slowmomiata Posted March 4, 2013 Author Report Share Posted March 4, 2013 and it was up for 3 hours before i bumped lol, i still had motivation to wrench on it i am sure you know the feeling Quote Link to comment
PrimeLuxeZ Posted March 4, 2013 Report Share Posted March 4, 2013 Pictures please! would like to see said s130 thats rhd Quote Link to comment
Tristin Posted March 4, 2013 Report Share Posted March 4, 2013 and it was up for 3 hours before i bumped lol, i still had motivationto wrench on it i am sure you know the feeling Youre right, I just looked again. Its weird that it showed the same hour, but only a few minutes apart on my phone last night. I apologize for my wacky phone. :) 1 Quote Link to comment
slowmomiata Posted March 5, 2013 Author Report Share Posted March 5, 2013 old pics, but it is a little cleaned up on the inside, it runs and drives now i am just having issues, today it did not want to start at all and after i finally got it to barely idle i was peaking around the engine bay and about shit myself... the po didnt tighten the spark plugs all the way and i was watching air/fuel mixture ooze out the spark plug holes... i tightened them all down, restarted it, got it to idle a little better and then revved the hell out of her. once its warmed up it runs great, still is running with no afm, i have butt loads more torque and power with all 6 plugs tightened lol night and day difference. i can tell its running extremely rich without the afm but with an afm as soon as i tap the gas it dies instantly. so its still afm less and i can see black puffs out the exhaust i am pretty clueless on where to go now, and is it ok to run the fuel pump hotwired so its constantly full bore? Quote Link to comment
slowmomiata Posted March 5, 2013 Author Report Share Posted March 5, 2013 and i guess thats my bad that i didnt check to see if the plugs were tightened.... i guess you cant really trust anyone you buy a car from???? Quote Link to comment
slowmomiata Posted March 5, 2013 Author Report Share Posted March 5, 2013 another question is why isnt there a write up on wiring in a fuse block to get rid of fusible links! am i going to have to attempt this myself and if so... ill need help with this z, i have only ever done the conversion in an rx7 Quote Link to comment
72240z Posted March 5, 2013 Report Share Posted March 5, 2013 Yikes to all that,test and replace the afm if bad is where you go from there. There is tons of info on swapping to various fuse blocks though its pretty straight forward. I wouldnt blame the PO since you tried to sell the car in the condition you have it in now. lol Quote Link to comment
slowmomiata Posted March 6, 2013 Author Report Share Posted March 6, 2013 i tried to sell it without ever trying to turn a wrench on it, then the buyer fell through and that lit a fire under my ass haha i had to get it running, and it does run... just puffs black like a chipped diesel. has anyone ever had an afm problem like this??? i have tried 3 of them and none helped Quote Link to comment
Pleadingbark Posted March 6, 2013 Report Share Posted March 6, 2013 TPS is probably bad Quote Link to comment
slowmomiata Posted March 6, 2013 Author Report Share Posted March 6, 2013 maybe, if i had a spare i would try it Quote Link to comment
72240z Posted March 6, 2013 Report Share Posted March 6, 2013 All you need to check sensors is a multi-meter and fsm. Quote Link to comment
PrimeLuxeZ Posted March 6, 2013 Report Share Posted March 6, 2013 Why dont you go look up the write up for the carbon trail on the afm. I was having idling issues with mine, then I did the steps to move the carbon trail, (very easy). The car actually started right up on the first turn of the key. As they get old the trail wears out on the same spot, so you have some room to play with it, and can lower it. Quote Link to comment
slowmomiata Posted March 6, 2013 Author Report Share Posted March 6, 2013 Are you talking about adjusting the flapper spring? When I get home and I am not doing this on an iPhone ill search for it Quote Link to comment
72240z Posted March 6, 2013 Report Share Posted March 6, 2013 Here I'll save you the trouble. I think carbon trail is confusing, that refers to diagnosis of problems in the ignition system like the cap and plugs. Carbon track sounds right to me. Idk if this is the write up Prime used but I have used it to refresh afm's I've sold. http://www.kamikazeracing.org/dl/JsAFMRebuild/ Quote Link to comment
PrimeLuxeZ Posted March 6, 2013 Report Share Posted March 6, 2013 Or carbon tracking lol, whichever sound better. I was pulling it out of my memory bank. Yeah thats the one I used. My s130 would bog down and have a real rough idle. And would take ages to get it to turn on. Mind you the only thing I had put was fresh gas and fix a couple gas lines from the filter. And a missing plug wire. And my cas isnt in the best condition if youve seen my thread lol. But you should give that a try what 72240z posted. And all I really did was step 4 and 6 off the write up. Quote Link to comment
PrimeLuxeZ Posted March 6, 2013 Report Share Posted March 6, 2013 Also is yours a 2+2? Quote Link to comment
slowmomiata Posted March 7, 2013 Author Report Share Posted March 7, 2013 mine is just a 2 seater, i will try that tomorrow after work, i have done the spring tension loosening before when doing an rx7 afm swap to a miata, but i didnt know the carbon track info, sounds promising, i will post results tomorrow night Quote Link to comment
MurphyEF Posted March 7, 2013 Report Share Posted March 7, 2013 Any way that I can convince you to measure out the placement to your fender mirrors? Preferably from the front of your fender at the sugar scoop to the crease on the outside? Edit: actually, looks like its right on the edge of the fender. Quote Link to comment
slowmomiata Posted March 8, 2013 Author Report Share Posted March 8, 2013 ya i could probably do that for you tomorrow or saturday, i need to measure anyways when i swap fenders because the passenger side is smashed, i just picked up my spare engines today, one is a usdm 1980 l28 and a usdm 1976 l28, and they both have way more vacuum bs on them, whats the best intake mainfold to use??? a long time ago when i had my 81 turbo i remember something about n42 and the p90 head make a good combo or something, i just want to have the best parts i can for it on it Quote Link to comment
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.