Need help with idle

[daz1320]

Ok heres the rundown.My engine(s13 blacktop) had been running really well up untiltwo days ago.When i got home I noticed a bit if a idle fluctuation.The next morning I got up and went to work and it drove fine,then at lunch it developed a severe miss below4000 rpms,but when it get above 5000 it runs like a scalded dog.It also idles rough.So I got new plugs,didn't help.When I disconnect the maf it idles fine with a little miss when i rev it steadily.so i replaced the maf with three others,no dice i replaced the plug twice,NOTHING. ALSO WHEN I unplug the maf it idles fine for a sec the goes back to rough.i am lost i was thinking that it was a coilpack prob but i dont know>>

[msaskin]

Check for vacuum leaks.

~matt

[rudee023]

Try unplugging the coilpacks one by one to see if one is bad. If you pull one and there is not a noticeable change in idle then you know that is the culprit. You could also use a voltmeter and check the resistance between pin 1 and 2 on the coilpack. I believe per the FSM it should be 1 ohm. Might also want to dopuble check your timing (via FSM procedure) and your TPS voltage setting. And of course check all hoses/couplings for leaks.

[daz1320]

When I went to start it this morning it was worse.It would start okay and go to high idle for about 2 secs and then idle low and sputter out.I can get it to run i just have to gas it alot even then it only idles at 500 or so with a severe miss It seems to me that whatever it is,its gettimg worse.....also i dont have any vaccum leak and i will test the ciolpacks...

[180fan]

check out my ongoing thread in the online mechanic board. There's everything there that pertains to the idle trust me.

[daz1320]

I read your post.Actually i read it indepth and checked everythimg that you did before i made this post.It was very informative.thanks tho....on another note I think i found my problem.I thnik its my maf wires,those things seem very sensitive.