Longtube help

2000Mustang · September 21st, 2007, 12:18 AM

I posted this in the Clubhouse, but I think it'll get alot better response here. Id like you to tell me the symptoms of not filling in the rear sensors on LT headers so that I can diagnose my problems.

AtlanticBlue99 · September 21st, 2007, 12:20 AM

did you turn the sensors off in a tune? if not you will throw a CEL code or MIL code (same thing) your air/fuel can get fubared and you will have a shitty idle and shitty acceleration. its worse when the front pair go out though

2000Mustang · September 21st, 2007, 12:23 AM

That sounds like my problem. It has a fugged up idle and it is real sluggish. I put the O2's back in the front, but the rear bungs are just sitting there open. Should I weld it or get fake sensors? I do not have a tuner and I will not for a while. Can it run normal w/o a tuner?

AtlanticBlue99 · September 21st, 2007, 12:29 AM

you dont need a tuner. you need real o2 sensors for the rear and you need MIL eliminators. it is cheaper this way. no it wont run normal without the correct voltage sent to the ecu

2000Mustang · September 21st, 2007, 12:34 AM

You mean that it win't run right with out the tuner, right? Can I use the stock rear O2 sensors? Will I have to extend the rears to make them fit too? And i'll need MIL eliminators either way, or only if I don't get a tuner?

whitemustang02 · September 21st, 2007, 12:38 AM

MIL's will only be needed if you have o/r mid pipe or very hi flow cats and extending them that will probable need to be done but cant say with out looking under the car and seing if the sensors will reach

SSStang · September 21st, 2007, 01:07 AM

If you have long tubs & no cats, or o/r mid pipe then you need a.) MIL eliminators or B.) Tuner to turn off the rear 02 sensors

The rear sensors missing shouldn't make it run horrible

2000Mustang · September 21st, 2007, 01:14 AM

I have LT's and high flow mini cats. It REALLY sounds bad when its starting up. And it doesn't run good at all. Any other suggestions?

02ponypackage · September 21st, 2007, 01:17 AM

exhaust leak ?

2000Mustang · September 21st, 2007, 01:21 AM

I honestly dont know. I dont think the little rear O2 bung would make that big of a leak.

SSStang · September 21st, 2007, 01:23 AM

Originally Posted by 2000Mustang

I honestly dont know. I dont think the little rear O2 bung would make that big of a leak.

your mini cats have 02 bungs and their not plugged?

if not thats your problem.

02ponypackage · September 21st, 2007, 01:25 AM

i had one bong open and it was horrible...esp. when hitting the gas slightly...just annoying

2000Mustang · September 21st, 2007, 01:28 AM

No, the LT's have front and rear bungs. My rears are just open right now. Do I need to weld them or add 02 sensors?

02ponypackage · September 21st, 2007, 01:30 AM

add the sensors to plug them man

2000Mustang · September 21st, 2007, 01:31 AM

Add the stock sensors? If so, ill probably have to splice and extend, right?

02ponypackage · September 21st, 2007, 01:32 AM

i guess....i wouldnt think u need rear 02s unless u have emissions im guessing

2000Mustang · September 21st, 2007, 01:36 AM

Im not worried about emissions, I just want my car to run right.

02ponypackage · September 21st, 2007, 01:40 AM

leave no openings in the exhaust except the intlet and outlet thats all

SSStang · September 21st, 2007, 01:42 AM

Originally Posted by 2000Mustang

No, the LT's have front and rear bungs. My rears are just open right now. Do I need to weld them or add 02 sensors?

Your Long Tubes have 2 02 bungs? (2 on each header?)

Thats weird because the rear one would be pointless ....

02ponypackage · September 21st, 2007, 01:43 AM

yeah...they would...just like on my offroad Xpipe...they just fill the hole

September 21st, 2007, 12:18 AM	#1
2000Mustang Enthusiast 1998 Mustang GT Join Date: Dec 2006 Location: Kansas City, MO Posts: 546	Longtube help I posted this in the Clubhouse, but I think it'll get alot better response here. Id like you to tell me the symptoms of not filling in the rear sensors on LT headers so that I can diagnose my problems. __________________ Off-road X pipe, Magnaflow mufflers, BBK cai, 3.73 gears, ZEX 75 shot (not hooked up), 17in. Bullitts, lowered

September 21st, 2007, 12:20 AM	#2
AtlanticBlue99 The Nice Guy 1999 Ford Mustang V6 14.79 @ 92.15 Join Date: Aug 2005 Location: UGA Posts: 8,302	did you turn the sensors off in a tune? if not you will throw a CEL code or MIL code (same thing) your air/fuel can get fubared and you will have a shitty idle and shitty acceleration. its worse when the front pair go out though __________________ ModdedAutos 1999 Mustang V6 I used to list my mods here but stopped when I exceeded 255 characters.

September 21st, 2007, 12:23 AM	#3
2000Mustang Enthusiast 1998 Mustang GT Join Date: Dec 2006 Location: Kansas City, MO Posts: 546	That sounds like my problem. It has a fugged up idle and it is real sluggish. I put the O2's back in the front, but the rear bungs are just sitting there open. Should I weld it or get fake sensors? I do not have a tuner and I will not for a while. Can it run normal w/o a tuner? __________________ Off-road X pipe, Magnaflow mufflers, BBK cai, 3.73 gears, ZEX 75 shot (not hooked up), 17in. Bullitts, lowered

September 21st, 2007, 12:29 AM	#4
AtlanticBlue99 The Nice Guy 1999 Ford Mustang V6 14.79 @ 92.15 Join Date: Aug 2005 Location: UGA Posts: 8,302	you dont need a tuner. you need real o2 sensors for the rear and you need MIL eliminators. it is cheaper this way. no it wont run normal without the correct voltage sent to the ecu __________________ ModdedAutos 1999 Mustang V6 I used to list my mods here but stopped when I exceeded 255 characters.

September 21st, 2007, 12:34 AM	#5
2000Mustang Enthusiast 1998 Mustang GT Join Date: Dec 2006 Location: Kansas City, MO Posts: 546	You mean that it win't run right with out the tuner, right? Can I use the stock rear O2 sensors? Will I have to extend the rears to make them fit too? And i'll need MIL eliminators either way, or only if I don't get a tuner? __________________ Off-road X pipe, Magnaflow mufflers, BBK cai, 3.73 gears, ZEX 75 shot (not hooked up), 17in. Bullitts, lowered

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September 21st, 2007, 01:07 AM	#7
SSStang I Post Entirely Way Too Much 2k2 Mustang V6 Join Date: Feb 2007 Location: TEXAS Posts: 6,032	If you have long tubs & no cats, or o/r mid pipe then you need a.) MIL eliminators or B.) Tuner to turn off the rear 02 sensors The rear sensors missing shouldn't make it run horrible __________________ Selling for friend: Vortech Supercharge kit < 100miles.

September 21st, 2007, 01:14 AM	#8
2000Mustang Enthusiast 1998 Mustang GT Join Date: Dec 2006 Location: Kansas City, MO Posts: 546	I have LT's and high flow mini cats. It REALLY sounds bad when its starting up. And it doesn't run good at all. Any other suggestions? __________________ Off-road X pipe, Magnaflow mufflers, BBK cai, 3.73 gears, ZEX 75 shot (not hooked up), 17in. Bullitts, lowered

September 21st, 2007, 01:17 AM	#9
02ponypackage MM Fanatic Join Date: Oct 2006 Location: Central FL Posts: 3,420	exhaust leak ? __________________ just a V6 with a bad belt slip under the hood

September 21st, 2007, 01:21 AM	#10
2000Mustang Enthusiast 1998 Mustang GT Join Date: Dec 2006 Location: Kansas City, MO Posts: 546	I honestly dont know. I dont think the little rear O2 bung would make that big of a leak. __________________ Off-road X pipe, Magnaflow mufflers, BBK cai, 3.73 gears, ZEX 75 shot (not hooked up), 17in. Bullitts, lowered

September 21st, 2007, 01:25 AM	#12
02ponypackage MM Fanatic Join Date: Oct 2006 Location: Central FL Posts: 3,420	i had one bong open and it was horrible...esp. when hitting the gas slightly...just annoying __________________ just a V6 with a bad belt slip under the hood

September 21st, 2007, 01:28 AM	#13
2000Mustang Enthusiast 1998 Mustang GT Join Date: Dec 2006 Location: Kansas City, MO Posts: 546	No, the LT's have front and rear bungs. My rears are just open right now. Do I need to weld them or add 02 sensors? __________________ Off-road X pipe, Magnaflow mufflers, BBK cai, 3.73 gears, ZEX 75 shot (not hooked up), 17in. Bullitts, lowered

September 21st, 2007, 01:30 AM	#14
02ponypackage MM Fanatic Join Date: Oct 2006 Location: Central FL Posts: 3,420	add the sensors to plug them man __________________ just a V6 with a bad belt slip under the hood

September 21st, 2007, 01:31 AM	#15
2000Mustang Enthusiast 1998 Mustang GT Join Date: Dec 2006 Location: Kansas City, MO Posts: 546	Add the stock sensors? If so, ill probably have to splice and extend, right? __________________ Off-road X pipe, Magnaflow mufflers, BBK cai, 3.73 gears, ZEX 75 shot (not hooked up), 17in. Bullitts, lowered

September 21st, 2007, 01:32 AM	#16
02ponypackage MM Fanatic Join Date: Oct 2006 Location: Central FL Posts: 3,420	i guess....i wouldnt think u need rear 02s unless u have emissions im guessing __________________ just a V6 with a bad belt slip under the hood

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September 21st, 2007, 01:36 AM	#17
2000Mustang Enthusiast 1998 Mustang GT Join Date: Dec 2006 Location: Kansas City, MO Posts: 546	Im not worried about emissions, I just want my car to run right. __________________ Off-road X pipe, Magnaflow mufflers, BBK cai, 3.73 gears, ZEX 75 shot (not hooked up), 17in. Bullitts, lowered

September 21st, 2007, 01:40 AM	#18
02ponypackage MM Fanatic Join Date: Oct 2006 Location: Central FL Posts: 3,420	leave no openings in the exhaust except the intlet and outlet thats all __________________ just a V6 with a bad belt slip under the hood

September 21st, 2007, 01:43 AM	#20
02ponypackage MM Fanatic Join Date: Oct 2006 Location: Central FL Posts: 3,420	yeah...they would...just like on my offroad Xpipe...they just fill the hole __________________ just a V6 with a bad belt slip under the hood