Could it be the EGR??

Traidmarx · February 26th, 2009, 11:47 PM

i've had an issue with my car for a while running rough. Sputtering bad at crusing speeds. But for the most part the car runs strong at wide open throttle, sometimes it'll seem like its flooded out then take off once it gets past 3000 rpms. So far i've put all the following...255 lph walbro pump,new fuel filter,accell distributor,new plugs,8.5mm MSD wires,msd blaster coil,new igntion module, new tfi module and new harmonic balancer. the car only seems to really miss or sputter at crusing speeds but when i push in the clutch and rev it up about 95% of the time it'll rev up fast with no problems, occasionally it'll rev slow. I'm not sure what else could be causing it.

superbean · February 27th, 2009, 12:41 AM

fuel pressure? With that big of a pump might be putting the hurt on your stock fuel regulator

93hatch · February 27th, 2009, 12:43 AM

stock regulator FTW mines workin fine with the walbro

superbean · February 27th, 2009, 12:49 AM

Originally Posted by 93hatch

stock regulator FTW mines workin fine with the walbro

hm....... Egr problem sounds possible though.. clean the carbon out of it

dr.gonzo! · February 27th, 2009, 03:21 AM

vacuum leak? Mine did that and I looked under the hood and one tube fell off the tree.

chickenbot · February 27th, 2009, 04:31 AM

codes?

Notcho · February 27th, 2009, 04:39 AM

Probably not a weak fuel pump. If the pump was not putting out enough, it would starve for fuel at higher RPM...

You said you replaced the plugs.. what did the old ones look like? All the same? Was one or two dirtier than the others? Check the plugs in it now. I had a similar problem with my old truck.. just cruising it would backfire and pop, but when I held it to the floor it would run perfect. Turns out one of the plugs was fouled with oil-ash deposits. I cleaned that plug and it ran fine afterwards.

Till · February 27th, 2009, 06:54 AM

Im shooting with EGR or vacuum leak, mine done the same thing but I sold her before I figured it out hahahaha

fateisajester · February 27th, 2009, 09:47 AM

could be a bad coil. not putting out enough juice at lower rpms. Or wires. Or plugs.

Definatly not a fuel problem

Traidmarx · February 27th, 2009, 12:22 PM

Originally Posted by chickenbot

codes?

it never throws any codes, the check engine light will come on and cut off, but i've taken it to 3 shops to have it checked and all of them say it shows no codes stored.

Originally Posted by dr.gonzo

vacuum leak? Mine did that and I looked under the hood and one tube fell off the tree.

i went through and fixed all the vacuum leaks all around the same time, found a huge one whoever had the car before me apparently took the throttle body off and put no gasket or anything back on it. but i'll check the hoses again to make sure.

Originally Posted by fateisajester

could be a bad coil. not putting out enough juice at lower rpms. Or wires. Or plugs.

Definatly not a fuel problem

well as far as all that, i've got brand new plugs, brand new 8.5 mm msd wires, and brand new msd blaster coil.

February 26th, 2009, 11:47 PM	#1
Traidmarx Hardcore Enthusiast 1995 Mustang GT SLOWER THAN OLD PEOPLE FUCK..:-( Join Date: Aug 2008 Location: Roanoke,VA Posts: 2,075 iTrader: 0 reviews	Could it be the EGR?? i've had an issue with my car for a while running rough. Sputtering bad at crusing speeds. But for the most part the car runs strong at wide open throttle, sometimes it'll seem like its flooded out then take off once it gets past 3000 rpms. So far i've put all the following...255 lph walbro pump,new fuel filter,accell distributor,new plugs,8.5mm MSD wires,msd blaster coil,new igntion module, new tfi module and new harmonic balancer. the car only seems to really miss or sputter at crusing speeds but when i push in the clutch and rev it up about 95% of the time it'll rev up fast with no problems, occasionally it'll rev slow. I'm not sure what else could be causing it. __________________ 1995 Mustang GT..4.30's,BBK Longtubes, Off Road X-Pipe,Magnaflow Catback,BBK Intake,BBK Underdrive Pulleys Walbro 255lph pump,accel dizzy,MSD Coil,MSD 8.5 Super Conductors,front sway bar removed, more coming soon. Last edited by Traidmarx; February 26th, 2009 at 11:52 PM.

February 27th, 2009, 12:41 AM	#2
superbean Hardcore Enthusiast 1998 Cobra 13.24@105.66 Join Date: Aug 2008 Location: North Carolina Posts: 1,778 iTrader: 0 reviews	fuel pressure? With that big of a pump might be putting the hurt on your stock fuel regulator __________________ weeee foooord!

February 27th, 2009, 12:43 AM	#3
93hatch Banned 1992 Lx 11.39@119.24 Join Date: Jan 2008 Location: Az Posts: 11,644 iTrader: 0 reviews	stock regulator FTW mines workin fine with the walbro __________________ [QUOTE=93mustank;2577445]We speed tested my right arm for quickness in shifts... So he could design the cam for proper shift recovery.[/QUOTE]

February 27th, 2009, 04:31 AM	#6
chickenbot Enthusiast 1990 mustang gt eventually Join Date: Nov 2007 Location: plano, tx Posts: 938 iTrader: 0 reviews	codes? __________________ 1990 gt 5.0 Mac Performance 76mm straight shot intake 70mm Accufab tb and egr spacer Trick Flow Track Heat u/l intake 3.55 gears MSD distributor, Blaster Coil, and 8.5mm wires

February 27th, 2009, 04:39 AM	#7
Notcho meh ======== Join Date: Oct 2006 Location: New Braunfels, Tex / Seguin, Tex Posts: 5,184 iTrader: 0 reviews	Probably not a weak fuel pump. If the pump was not putting out enough, it would starve for fuel at higher RPM... You said you replaced the plugs.. what did the old ones look like? All the same? Was one or two dirtier than the others? Check the plugs in it now. I had a similar problem with my old truck.. just cruising it would backfire and pop, but when I held it to the floor it would run perfect. Turns out one of the plugs was fouled with oil-ash deposits. I cleaned that plug and it ran fine afterwards. __________________ '87 2.3 Notch with +4 cylinder mod Ass, Cash, or Grass.. nobody rides for free Black Stang Crew Member #11

February 27th, 2009, 09:47 AM	#9
fateisajester Regular 1989 Ford Mustang 3 mins Join Date: Sep 2008 Location: Orlando, FL Posts: 378 iTrader: 0 reviews	could be a bad coil. not putting out enough juice at lower rpms. Or wires. Or plugs. Definatly not a fuel problem __________________

Remove Advertisements Sponsored Links
Ford Mustang Forum Advertisement

Threads Similar to: Could it be the EGR??
Thread	Thread Starter	Forum	Replies	Last Post
EGR VS EGR delete?	riggsracin	94-95	5	December 14th, 2008 11:56 AM
EGR	all5.0motor	94-95	9	October 23rd, 2008 01:39 PM
egr ????	armymike63b	99-04	5	September 13th, 2008 02:50 AM
egr	cali 5.0	5.0 Mustangs	2	April 29th, 2007 11:11 AM
EGR	terribleonexx88	5.0 Mustangs	16	November 17th, 2006 09:30 PM

All times are GMT -4. The time now is 06:33 PM.
Contact Us - Modded Mustangs : Ford Mustang Forums - Privacy Statement - Top
Modded Mustangs is ©2005-2008, All Rights Reserved, And is Not Affiliated with Ford Motor Company. Forum is powered by vBulletin ©2000 - 2012, Jelsoft Ent. Ltd. & SEO by vBSEO 3.3.2 ©2009, Crawlability, Inc.