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View Full Version : Still having problems with engine acceleration,


MarketPlayer
05-31-2002, 11:20 AM
I went to the junk yard today, and found some really good stuff for my 240! &nbsp;I got some used alpine 4x6 plate speakers, the trunk hatch thingy that opens when the hatch does, a antenna, and MAFS all for $40 <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/biggrin.gif" border="0" valign="absmiddle" alt=':D'> &nbsp;<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/biggrin.gif" border="0" valign="absmiddle" alt=':D'> &nbsp;<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/hehe.gif" border="0" valign="absmiddle" alt=':hehe:'> &nbsp;<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/biggrin.gif" border="0" valign="absmiddle" alt=':D'> &nbsp;<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/biggrin.gif" border="0" valign="absmiddle" alt=':D'> &nbsp; After i paid for everything, I was like if the MAF doesn't work can i bring it back... and he was like, "shit i didn't know that was there? &nbsp;Oh well, if it doesn't work too bad cause normally i sell those alone for $50!" &nbsp;
I installed it and reset my ECU. &nbsp;Drove for a little while to let it learn i guess, then pulled over and did a dianostic check of my ECU. &nbsp;Here is what it did...After being turned all the way to the right, it blank three times fast, then four times fast, then five times fast. &nbsp;Then it waited a second, and blank once slow then twice fast. &nbsp;Then it started back from three times fast! &nbsp;I am guessing that still means there is something wrong w/ my MAFS? It still blows black smoke, and has a little engine stutter when idling, but it is way better than it was before! &nbsp;That is why i don't thinkit is the actualy MAF, but maybe the wires comming from the plug to werever they go?
Anyone have any ideas if i can buy this at like NAPA or D.A.P.? &nbsp;What else can do to get rid of the engine stutter? &nbsp;It used to drop all the way down to 500rpm, but now only drops to 950 from 1200 w/ the a/c running, and down to 850 w/o the a/c!
As far as my rev limiter thing, I have had two good ideas thrown at me by fellow zilvia members. &nbsp;This what my engine does when i talk about the rev limiter kicking in!
<!--QuoteBegin--MarketPlayer+May 23 2002,8<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wow.gif" border="0" valign="absmiddle" alt=':0'></span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (MarketPlayer @ May 23 2002,8<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wow.gif" border="0" valign="absmiddle" alt=':0'>1)</td></tr><tr><td id="QUOTE">If it is in neutral then it will rev to 5000 then deccelorate to 3000 then rev back to 5000 and repeat process. &nbsp;If in gear it will go to 5000 then deccellorate to 4500 then back to 5000 and repeat process! &nbsp;</td></tr></table><span id='postcolor'>
</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (240sxspeedracer1 @ May 28 2002,10:31)</td></tr><tr><td id="QUOTE">Solution: I changed out the cat. &nbsp;There is a substance in there that gets overheated and then clogs up the exhaust pipes. &nbsp;
hell, why dont u just eliminate the cat and resonator and do 2.5" to the muffler.</td></tr></table><span id='postcolor'>
Has anyone else had this same problem, and fixed it this way? &nbsp;I am pretty sure the cat and resonator are pretty dirty, but the actual muffler and pipping doesn't seem too bad. &nbsp;I will try this at a last resort!
Here is the other solution:
</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (MyFirst240SX @ May 29 2002,11:29)</td></tr><tr><td id="QUOTE">That 5k limiter could be on of two things. &nbsp;1 Ive heard of people having that and after a tune up , and cap and rotor.its gone. 2 You 5th gear sensor on your tranmission could be messed up and always sending 5 th signals to your ECU.</td></tr></table><span id='postcolor'>
I had a chance at work to look under my car on a lift and noticed a sensor on the transmission was either cut or broken, and i can't remember, exactly were it was, but it defenately was on the tranny! &nbsp;Could this be the cause? &nbsp;It seemed like it was supposed to be plugged in and shit! &nbsp;I mean why would they put something on it if it wan't needed?
I am hopping i can go out of town this weeked, so i need to get this puppy in top shape for the road trip!
Also when i was at the junk yard, i saw a few things, that people might be interested in, so check out my thread in for sale wanted forum!
-zac

MarketPlayer
06-02-2002, 09:50 AM
Okay i just looked under my car and there are three identical sensors connected to the tranny! &nbsp;Each ones wires end up congrigating together wrapped in that wire covering stuff. &nbsp;They are spread out about 3/4' apart and the one closest to were the hydrolic clutch fliud attaches to the clutch is broken. &nbsp;Does anyone know what this ensor is called? &nbsp;I went to D.A.P and they said the only sensor they could find attached to the tranny was the speed sensor! &nbsp;My speedometer works fine, and so does my tach, which leads me to believe that is what the other two sensors are for, but what is the third one called/for?<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/confused.gif" border="0" valign="absmiddle" alt='???'>? &nbsp;Thanks alot, and if i find out before, you, i will share my new found knowledge!