Tex7387

iTrader: (1)

Ok, my car is wigging out on me, recently, and for no apparent reason, it started running like hell. The rpm's will drop dramatically (like 300-400 at idle ), and when I give it gas, it feels like its starved for fuel and bogging out, then it will kick in out of nowhere. For the most part it will do this after starting up the motor, and last for a min or two, then it will drive fine. I thought it might have been a fuel filter, so I replaced that, I have also been running some fuel injection cleaner through it, and it persists. Plugs also don't look to be fouled out. Anybody got any ideas as to what it could be?

01NBMT/A

iTrader: (2)

new plugs/wires yet?

SSkid99

iTrader: (3)

O2 might be bad do you have a code on the dash?

Gun5

iTrader: (37)

First check codes

hook up fuel press gauge...

clean out TB and make sure vacuum lines and everything are in working order

im betting its a pump going bad have you tryed to go WOT.. let me guess falls right on its face?

Gun5

iTrader: (37)

O2 will usually make it go rich though

volcanic2345

iTrader: (9)

its your o2 sensor for sure

Tex7387

iTrader: (1)

its got a SES light, and even starts flashing at me at some point. Just got new headers and true dual exhaust installed, maybe I should have got new sensors when I did that.....

Gun5

iTrader: (37)

how is everyone coming up with O2 sensor.... its gonna run like crap, get horrible mileage and stink of fuel but not going to stutter like its not getting fuel.. check that SES light tex

SSkid99

iTrader: (3)

you need the O2 eliminaters plus the Bosh O2 sencors ine was sputtering like it had no power and my O2 grounded its self to the header you might want to check that out

Tex7387

iTrader: (1)

I'm having it checked tomorrow, just wanted to get an idea as to what it might be.

Gun5

iTrader: (37)

if all else fails you can disconnect your O2's so they stay outta the loop see if it stutters... dont go riding around like this though.. it will take them off the problem list though

Sarge_13

iTrader: (1)

My sister had the same problem on her Explorer except if it sits still at idle for too long it will actually stall out. It was both the O2 sensors and filthy fuel system

Tex7387

iTrader: (1)

Mine stalls if i let it sit w/o kinda pumping the gas. I will have the code checked tomorrow, and hopefully its the O2 sensors like you guys are thinking.

camarodave98

iTrader: (2)

had exact problem with my last z28, o2 sensors

FIREHAWK #07

iTrader: (1)

You have a [partially] burned wire; causing your SES light to blink (random misfire).... A lot of the times when people get headers put on.... a wire will touch the header and burn through it.

You can just replace the wire that is burnt... OR your o2's are bad.

TheBlurLS1

iTrader: (8)

Check the plug on the MAF and also make sure it's clean. I see you've got a K&N? Are you sure you didn't go psycho on the oil? A light coat is all it takes and only spray the side that faces down.

Take the MAF ends off and GENTLY CLEAN the tiny elements with alcohol and q-tips. They are CRAZY fragile, so be careful.


Flashing SES usually means multiple misfire though. Sounds like you just need to do some MAINTENANCE.

JoeKnowsBaseball

iTrader: (5)

i wanna go with the burnt wires. i had something like that happen to me in a V6. wires looked fine, but upon very close inspection one was hard in a spot where the silicone was burn to the wire causing it to misfire. it idled like **** and would almost die, but if you gave it gas/kept it in higher RPMs it seemed to run fine.