Car Problems- MAFS?

[nissandrift]

My car ( 1993 240sx SE w/ stock KA24de) was having problems stuttering about 2 weeks ago, anyways the next day it pretty much dies. It dies every time I try and give it gas, but start and idles fine. I unplug the MAFS and it runs fine until 2500, just a little rich. I figure its the MAFS and its runn9ing in safe mode. Well anyway i check voltage on it and its getting 14.5 volts in and putting .37 volts out when plugged in. Anyways I buy a used MAFS and it got here today. When I put it all back in and plugged it up my car does the same thing. I figure its worth a shot to unplug the negative battery cable and maybe reset ECU, I know its needed with OBD2 but unsure with OBD1. Im wondering do you think I got a bad MAFS, or does the problem lie elsewhere? Does anyone have and S13 in the johnston, or wake county area that would let me borrow theres for a bit so I can try your MAFS? Im willing to pay a little.

[[s3]]

Maybe you should check for codes.

[nissandrift]

I don't want to sound dumb, but how do I check for codes on OBD1. Is it the same where they just plug it up. My check engine light is not on though.

[[s3]]

http://www.240sx.org/faq/articles/ecmcodes.htm

all or most S13s, the procedure is the same

*some of the codes will NOT trigger an engine light, although they are stored in the ECU until erased*

[nissandrift]

I beleive my MAFS is bad, but I was told to check my PCV. I looked through the FAQ's and it sound like a pain in the ***. I'll have access to a lift on tue., would it be easier to get to from underneath? My car is a stock 1993 w/ ka24de. Does anyone else think my PCV valve could be the prob.?

[nissandrift]

I've already tried to check for codes, but I couldnt get the light to turn on regardless which way the bolt was turned, or if the car key was on, it was running, or everything off.

[[s3]]

You gotta wait young grasshopper, it takes a few seconds for the light to flash.

Read the FAQ carefully and follow directions.

PCV valve should be ok, unless you notice oil gunked on it.

[nissandrift]

thanx for the info, Ill go check one more time. I couldnt seem to see the PCV from the top. But what would the car do if it was clogged?

[nissandrift]

i checked and I got code 12, therefore my MAFS is bad. Thanx for the info I didnt have the key turned completely on. If Im getting 14.5 volts into the mafs and only like .3-.4 at idle is it definatly the mafs?

[oakleys_s13]

hey i have had the same prolbem and i found out that some brake cleaner sprayed from a foot away will help i pretty sure

[nissandrift]

ive sprayed both of the mafs i have with brake cleaner, and cleaned the connection, put in dilectric grease, and tested the wiring with an ohm meter

[oakleys_s13]

have you tried unpluging the ecu for a min and then tried it again? but what i think that you are gonna have to do is replace it hmmmmm one word JUNKYARD if you know of one sorry i couldnt help you any more

[[s3]]

Actually, I have a used one lying around from a 92/93 car I picked up at the junkyard.

I was in the process of polishing the sucker up and making it look real nice too.

Want it?

[nissandrift]

some dude from charlotte sent me a bad one, and he says if i pay shipping for another he has another to send. Hes sending it out today. So far I've sent him 55 and he wants some more. If this one doesnt work how much do you want for yours S3?

[[s3]]

I can let it go for $50 + shipping, if you want I'll take a few pics later to show you what it looks like.

It would actually look a lot better if I finished polishing it. (very nice show piece for them peeps who like bling bling engine bays)

[nissandrift]

r u positive that it works