stuttering at idle? sounds like its missfiring.

[dvd]

I've been having a crappy idle for the past week. It would jump from 700 to 1.2k. But now its even worst. The car would sound like its misfiring when idling. When i'm driving I wouldnt feel anything, only happens when idle. When i disconnected my maf and let the car sit, the missfiring sound wouldnt happen. Do you guys think I have a bad maf?

[rico05]

Clean the MAF and reset the TPS. I had a similar issue until I did both.

Also, don't rule out bad o2 sensor, considering it just randomly started doing this.

[float_6969]

Rico's on the ball! Thanks man!

Yea, clean the MAFS, and check the TPS and O2 sensors.

[dvd]

i've replaced my o2 3 weeks ago. I adjusted my tps(its actually on the correct position this time ) I heard to use throttle body cleaner, but do i spray it on the hotwire? Or do i just clean inside?

[89'ClubK's]

Test your coil packs and injectors as well. Possibly a bad fuel pump too.My car did the same thing when I had two packs going bad, and if the fuel pump or injectors are going bad, they'll mess up your A/F ratio, causing it to studder. This can happen because the car is getting too little gas and more air. If those are good, check the A/F ratio, and make sure you're not running too rich and over-loading the car. That'll bogg it down as well.Check those and the MAF (I had to clean mine out), like the others say.Hope that helps!

[dvd]

ok i changed the maf. Now the idle is still crappy, its pissing me off. And now i know for SURE that its running rich because i can smell it. Could a bad pump cause it to run rich?

[damesta]

More likely a bad fpr than a bad pump.

[dvd]

would it be the fpr if it idles well if i disconnect the maf, even though it revs at 1k, but it doesnt sound like its going to stutter like it does with the maf plugged?

[dvd]

ok update: I changed the maf to another sohc maf once again. And it still idles like crap. But the thing is I noticed its far worst when the engine is cold. After driving on the freeway for a good 40minutes, it wouldnt idle as bad.