Issues

dGrabber · November 3rd, 2011, 12:48 PM

My car has recently been knocking, fluctuating idle, sputtering, and would tend to die if I'm at a stop light for a while. So, I took of the upper intake manifold and where the Cylinder 6 is, there was some extreme gunk build up in the manifolds.

So, cleaned it out with Carb Cleaner to the best of my ability and now there's no more knock, no more idle fluctuation, no more detonating, but it still sputters. When stopped and under 2k rpm, it sputters even during acceleration, but then I get a burst of acceleration and it stops sputtering. Something tells me this issue has to do with air flow.

Could a clogged cat or exhaust component be what's causing this? Also, I've even replaced my EGR valve...

Any help is appreciated!

6ER THEN I 8ER! · November 3rd, 2011, 01:25 PM

my GT had that issue...it turned out to be an upstream o2. couldn't hurt to pull yours then look at it. Not too expensive to replace either

dgt_mustang · November 3rd, 2011, 02:02 PM

Mine had same issue as well, it didnt sputter all the time but pretty random. I had my CATS cut off and straight piped, now it does not do it, bogs down a little bit but pretty sure thats my tune up that i need to do....and.....my tune up....sorry losing all train of thought now because i keep staring at olivia Wild..

dGrabber · November 3rd, 2011, 09:55 PM

Originally Posted by 6ER THEN I 8ER

my GT had that issue...it turned out to be an upstream o2. couldn't hurt to pull yours then look at it. Not too expensive to replace either

Alrighty, I'll pull it first thing in the AM and hope that's the issue. It's doing it all the time now. Drove about 40 miles today, on the highway it was getting on my last nerve!

@dgt, lol

dGrabber · November 4th, 2011, 04:51 PM

To check, should I pull the O2 Sensors themselves, or just unplug the connectors?

6ER THEN I 8ER! · November 4th, 2011, 11:06 PM

both...check to make sure they are connected correctly as well

dGrabber · November 5th, 2011, 10:59 PM

Disconnected the connectors, didn't have the time to pull out the sensors today. But, it ran like a charm disconnected. You, my friend, are a mustang genius!

REPS

6ER THEN I 8ER! · November 5th, 2011, 11:14 PM

the upstreams or downstreams?

dGrabber · November 5th, 2011, 11:48 PM

I only pulled the 2 inside the bigger Cats.

6ER THEN I 8ER! · November 6th, 2011, 01:42 AM

Originally Posted by dGrabber

I only pulled the 2 inside the bigger Cats.

so the downstreams...dunno how they affected anything lol since they're just there to tell the computer if the cats are working.

dGrabber · November 6th, 2011, 08:05 PM

Originally Posted by 6ER THEN I 8ER

so the downstreams...dunno how they affected anything lol since they're just there to tell the computer if the cats are working.

It may also be the upstreams. Just def clears the air that it's my O2 sensors.

6ER THEN I 8ER! · November 6th, 2011, 08:24 PM

Originally Posted by dGrabber

It may also be the upstreams. Just def clears the air that it's my O2 sensors.

i wouldn't leave the front o2's unplugged man...that's an easy way to mess up things.

iPAPKE · November 6th, 2011, 08:29 PM

Just out of curiosity, whens the last time you did your plugs/wires?

dGrabber · November 7th, 2011, 11:59 AM

Originally Posted by iPAPKE

Just out of curiosity, whens the last time you did your plugs/wires?

The car got a different motor early last year, since then, I've only put less than 20k miles on it.

So, that's not really necessary. Everything else is in good shape.

xtreme 2 · November 7th, 2011, 01:41 PM

unless they are fouled...

SON1C · November 7th, 2011, 06:56 PM

should go catless when you can

iPAPKE · November 7th, 2011, 11:13 PM

Id still check/replace them. My car was having the same issues as yours. New plugs and wires resolved the problem. When id have my car in cruise control on the highway, it would run smooth, until i went up an incline. The small increase in engine rpms would make my car idle and chug like a son of a gun. Also, when in reverse, it felt like it wanted to stall horribly.

6ER THEN I 8ER! · November 7th, 2011, 11:14 PM

just replace the plugs OP...it's only gonna run you around $10 so why not

dGrabber · November 9th, 2011, 12:19 AM

It's not the plugs...

I just scanned it, here's my codes:
P0171 System too lean (bank 1)
P0174 System too lean (bank 2)
P0306 Cylinder 6 Misfire detected

6ER THEN I 8ER! · November 9th, 2011, 12:23 AM

Originally Posted by dGrabber

It's not the plugs...

I just scanned it, here's my codes:
P0171 System too lean (bank 1)
P0174 System too lean (bank 2)
P0306 Cylinder 6 Misfire detected

the misfire could be the plug

as for the first two..it's unusual to see both banks go out at the same time. I would look at all the vacuum lines first...it can sometimes explain this

November 3rd, 2011, 12:48 PM	#1
dGrabber Regular '00 Mustang V6 Slow but looks nice :p Join Date: Sep 2010 Location: Pittsburgh, PA Posts: 478 iTrader: 0 reviews	Issues My car has recently been knocking, fluctuating idle, sputtering, and would tend to die if I'm at a stop light for a while. So, I took of the upper intake manifold and where the Cylinder 6 is, there was some extreme gunk build up in the manifolds. So, cleaned it out with Carb Cleaner to the best of my ability and now there's no more knock, no more idle fluctuation, no more detonating, but it still sputters. When stopped and under 2k rpm, it sputters even during acceleration, but then I get a burst of acceleration and it stops sputtering. Something tells me this issue has to do with air flow. Could a clogged cat or exhaust component be what's causing this? Also, I've even replaced my EGR valve... Any help is appreciated! __________________ Build Thread Parts For Sale Mods: 01 Cobra Bumper, GT Rear Bumper, Reverse Glow Gauges, Smoked Headlights, Smoked Fogs, Windstar Upper Intake, 8.8 Rear End, Drilled & Slotted front brakes, to be cont'd...

November 4th, 2011, 04:51 PM	#5
dGrabber Regular '00 Mustang V6 Slow but looks nice :p Join Date: Sep 2010 Location: Pittsburgh, PA Posts: 478 iTrader: 0 reviews	To check, should I pull the O2 Sensors themselves, or just unplug the connectors? __________________ Build Thread Parts For Sale Mods: 01 Cobra Bumper, GT Rear Bumper, Reverse Glow Gauges, Smoked Headlights, Smoked Fogs, Windstar Upper Intake, 8.8 Rear End, Drilled & Slotted front brakes, to be cont'd...

November 5th, 2011, 10:59 PM	#7
dGrabber Regular '00 Mustang V6 Slow but looks nice :p Join Date: Sep 2010 Location: Pittsburgh, PA Posts: 478 iTrader: 0 reviews	Disconnected the connectors, didn't have the time to pull out the sensors today. But, it ran like a charm disconnected. You, my friend, are a mustang genius! REPS __________________ Build Thread Parts For Sale Mods: 01 Cobra Bumper, GT Rear Bumper, Reverse Glow Gauges, Smoked Headlights, Smoked Fogs, Windstar Upper Intake, 8.8 Rear End, Drilled & Slotted front brakes, to be cont'd...

November 5th, 2011, 11:48 PM	#9
dGrabber Regular '00 Mustang V6 Slow but looks nice :p Join Date: Sep 2010 Location: Pittsburgh, PA Posts: 478 iTrader: 0 reviews	I only pulled the 2 inside the bigger Cats. __________________ Build Thread Parts For Sale Mods: 01 Cobra Bumper, GT Rear Bumper, Reverse Glow Gauges, Smoked Headlights, Smoked Fogs, Windstar Upper Intake, 8.8 Rear End, Drilled & Slotted front brakes, to be cont'd...

November 7th, 2011, 01:41 PM	#15
xtreme 2 Hardcore Enthusiast 2001 v6 premium Join Date: Nov 2008 Location: Tulsa, OK Posts: 1,340 Blog Entries: 1 iTrader: 0 reviews	unless they are fouled... __________________ Screw it, coming to play with the big boys... 5.4L Vortech COMING SOON!

November 3rd, 2011, 01:25 PM	#2
6ER THEN I 8ER! Banned Join Date: Apr 2007 Location: Portland, TN Posts: 17,515 iTrader: 3 reviews	my GT had that issue...it turned out to be an upstream o2. couldn't hurt to pull yours then look at it. Not too expensive to replace either

November 4th, 2011, 11:06 PM	#6
6ER THEN I 8ER! Banned Join Date: Apr 2007 Location: Portland, TN Posts: 17,515 iTrader: 3 reviews	both...check to make sure they are connected correctly as well

November 5th, 2011, 11:14 PM	#8
6ER THEN I 8ER! Banned Join Date: Apr 2007 Location: Portland, TN Posts: 17,515 iTrader: 3 reviews	the upstreams or downstreams?

November 6th, 2011, 08:29 PM	#13
iPAPKE iPoopke Regular 2004 Mustang Join Date: Aug 2011 Location: Michigan Posts: 844 iTrader: 0 reviews	Just out of curiosity, whens the last time you did your plugs/wires?

November 7th, 2011, 06:56 PM	#16
SON1C Run ur car, not ur mouth. 2003 Sonic Blue 4.6L Join Date: Jul 2010 Location: Northern Virginia Posts: 4,057 Blog Entries: 1 iTrader: 3 reviews	should go catless when you can __________________ 238rwhp/263rwtq Drew's Build Thread

November 7th, 2011, 11:13 PM	#17
iPAPKE iPoopke Regular 2004 Mustang Join Date: Aug 2011 Location: Michigan Posts: 844 iTrader: 0 reviews	Id still check/replace them. My car was having the same issues as yours. New plugs and wires resolved the problem. When id have my car in cruise control on the highway, it would run smooth, until i went up an incline. The small increase in engine rpms would make my car idle and chug like a son of a gun. Also, when in reverse, it felt like it wanted to stall horribly.

November 7th, 2011, 11:14 PM	#18
6ER THEN I 8ER! Banned Join Date: Apr 2007 Location: Portland, TN Posts: 17,515 iTrader: 3 reviews	just replace the plugs OP...it's only gonna run you around $10 so why not

November 9th, 2011, 12:19 AM	#19
dGrabber Regular '00 Mustang V6 Slow but looks nice :p Join Date: Sep 2010 Location: Pittsburgh, PA Posts: 478 iTrader: 0 reviews	It's not the plugs... I just scanned it, here's my codes: P0171 System too lean (bank 1) P0174 System too lean (bank 2) P0306 Cylinder 6 Misfire detected __________________ Build Thread Parts For Sale Mods: 01 Cobra Bumper, GT Rear Bumper, Reverse Glow Gauges, Smoked Headlights, Smoked Fogs, Windstar Upper Intake, 8.8 Rear End, Drilled & Slotted front brakes, to be cont'd...

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