I need help PLZ!!

92 LX 5.0 · April 13th, 2009, 10:23 PM

My 92 5.0 will bog spit and sputter at wot for a sec or so then will take off. My mods are fresh short block with E303, cam 97 explorer heads new springs and valves, 1.7 rr, Gt40 intake, 70 mm throttle body, 73 mm mass air cal for 24 lb inj, elec fan, underdrive pulleys, ford racing headers, off road xpipe, flowmasters and dumps, fresh trans with shift kit 2500 stall and 3.73 gears. timming set at 15 deg, tps 1 volt, 11 inches of vac at idle (seems to low to me but not sure idles very well). I have swapped a friends dist and coil which didn,t help. The car when stock with nothing but gears and flowmasters ran 9.4 to 9.5 in 1/8 with 2.15 60 ft times now best time has been 9.34 at 81 mph with 2.5 60 ft times no tire spin. If anyone has had this prob or has any ideas it would be very appreciated.

Troy
Pleasant View, TN

1fst5.0 · April 13th, 2009, 10:44 PM

u got an adjustable fuel pressure regulator?

88_FiveOh · April 13th, 2009, 10:46 PM

sounds like a fuel problem, check your fuel pressure and go from there

92 LX 5.0 · April 13th, 2009, 10:46 PM

no

92 LX 5.0 · April 14th, 2009, 09:16 PM

I have checked fuel psi, pressure good no drop. i have a new 110 gph pump

Traidmarx · April 14th, 2009, 09:40 PM

i've had the same problem with my car, ended up being because of the O2 sensors, causing it not to switch back from rich to lean and kinda flooded the car out.

92 LX 5.0 · April 14th, 2009, 10:00 PM

Originally Posted by Traidmarx

i've had the same problem with my car, ended up being because of the O2 sensors, causing it not to switch back from rich to lean and kinda flooded the car out.

did your car take off and run strong as hell after the bog and sputter

Traidmarx · April 14th, 2009, 10:07 PM

yea it would just sputter only while driving at cruising speeds however while it was sputtering i could push the clutch in and it would rev up without hesitiation. and i'd stomp it and either it'd bog down like i hadn't hit the gas yet, wait a few seconds and then take off...other times it'd just sputter until i held the gas down to the floor it sputter a few more seconds and then take off fine.

92 LX 5.0 · April 14th, 2009, 10:11 PM

my car runs fine while cruising and under light throttle it only does it at wot man its driving me nuts because i want to see how all the new mods will make it run

Traidmarx · April 14th, 2009, 10:13 PM

have you checked the voltage on the tps??

92 LX 5.0 · April 14th, 2009, 10:14 PM

Originally Posted by Traidmarx

have you checked the voltage on the tps??

yes i set it at 1 volt

Traidmarx · April 14th, 2009, 10:18 PM

hmmm yea it should read like .98 or so with the key in the on position....i'm thinking of what else it could be.

92 LX 5.0 · April 14th, 2009, 10:30 PM

Originally Posted by Traidmarx

hmmm yea it should read like .98 or so with the key in the on position....i'm thinking of what else it could be.

i keep thinking its probably somthing stupid im over looking

Traidmarx · April 14th, 2009, 10:32 PM

unless you've got some sorta vaccuum leak...which could be if there is air gettin in behind the MAF thats not accounted for until the MAF reads so much air going through due it being at WOT for a few seconds. that it balances itself out.

92 LX 5.0 · April 14th, 2009, 10:39 PM

yeah i thought the same thing but i have checked for vac leaks haven't found any and the car idles very well vac is 11 inches at idle but im not sure what it should be for my e303 cam

April 13th, 2009, 10:23 PM	#1
92 LX 5.0 Newbie 1992 Mustang lx Join Date: Apr 2009 Location: Pleasant View, Tn Posts: 9 iTrader: 0 reviews	I need help PLZ!! My 92 5.0 will bog spit and sputter at wot for a sec or so then will take off. My mods are fresh short block with E303, cam 97 explorer heads new springs and valves, 1.7 rr, Gt40 intake, 70 mm throttle body, 73 mm mass air cal for 24 lb inj, elec fan, underdrive pulleys, ford racing headers, off road xpipe, flowmasters and dumps, fresh trans with shift kit 2500 stall and 3.73 gears. timming set at 15 deg, tps 1 volt, 11 inches of vac at idle (seems to low to me but not sure idles very well). I have swapped a friends dist and coil which didn,t help. The car when stock with nothing but gears and flowmasters ran 9.4 to 9.5 in 1/8 with 2.15 60 ft times now best time has been 9.34 at 81 mph with 2.5 60 ft times no tire spin. If anyone has had this prob or has any ideas it would be very appreciated. Troy Pleasant View, TN

April 13th, 2009, 10:46 PM	#3
88_FiveOh Regular 1988 lx 13.13@101.78 Join Date: Feb 2009 Location: Maryland Posts: 191 iTrader: 0 reviews	sounds like a fuel problem, check your fuel pressure and go from there __________________ 302 out of a lincoln lsc, Cobra upper and lower, 1.6 rr's, msd cap, bbk equal lengths, off road h pipe, mac pro chambers, 4:10's, bbk drag launch springs, 4cylinder tranny, short shifter, 20% tint, and 6k H.I.D's. 13.13@101mph 1.8 60ft on D/R's

April 14th, 2009, 09:40 PM	#6
Traidmarx Hardcore Enthusiast 1995 Mustang GT SLOWER THAN OLD PEOPLE FUCK..:-( Join Date: Aug 2008 Location: Roanoke,VA Posts: 2,075 iTrader: 0 reviews	i've had the same problem with my car, ended up being because of the O2 sensors, causing it not to switch back from rich to lean and kinda flooded the car out. __________________ 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.

April 14th, 2009, 10:07 PM	#8
Traidmarx Hardcore Enthusiast 1995 Mustang GT SLOWER THAN OLD PEOPLE FUCK..:-( Join Date: Aug 2008 Location: Roanoke,VA Posts: 2,075 iTrader: 0 reviews	yea it would just sputter only while driving at cruising speeds however while it was sputtering i could push the clutch in and it would rev up without hesitiation. and i'd stomp it and either it'd bog down like i hadn't hit the gas yet, wait a few seconds and then take off...other times it'd just sputter until i held the gas down to the floor it sputter a few more seconds and then take off fine. __________________ 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.

April 14th, 2009, 10:13 PM	#10
Traidmarx Hardcore Enthusiast 1995 Mustang GT SLOWER THAN OLD PEOPLE FUCK..:-( Join Date: Aug 2008 Location: Roanoke,VA Posts: 2,075 iTrader: 0 reviews	have you checked the voltage on the tps?? __________________ 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.

April 13th, 2009, 10:44 PM	#2
1fst5.0 Regular 1986 mustang gt Join Date: Apr 2009 Location: el paso tx Posts: 189 iTrader: 0 reviews	u got an adjustable fuel pressure regulator?

April 14th, 2009, 09:16 PM	#5
92 LX 5.0 Newbie 1992 Mustang lx Join Date: Apr 2009 Location: Pleasant View, Tn Posts: 9 iTrader: 0 reviews	I have checked fuel psi, pressure good no drop. i have a new 110 gph pump

April 14th, 2009, 10:11 PM	#9
92 LX 5.0 Newbie 1992 Mustang lx Join Date: Apr 2009 Location: Pleasant View, Tn Posts: 9 iTrader: 0 reviews	my car runs fine while cruising and under light throttle it only does it at wot man its driving me nuts because i want to see how all the new mods will make it run

April 14th, 2009, 10:18 PM	#12
Traidmarx Hardcore Enthusiast 1995 Mustang GT SLOWER THAN OLD PEOPLE FUCK..:-( Join Date: Aug 2008 Location: Roanoke,VA Posts: 2,075 iTrader: 0 reviews	hmmm yea it should read like .98 or so with the key in the on position....i'm thinking of what else it could be. __________________ 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.

April 14th, 2009, 10:32 PM	#14
Traidmarx Hardcore Enthusiast 1995 Mustang GT SLOWER THAN OLD PEOPLE FUCK..:-( Join Date: Aug 2008 Location: Roanoke,VA Posts: 2,075 iTrader: 0 reviews	unless you've got some sorta vaccuum leak...which could be if there is air gettin in behind the MAF thats not accounted for until the MAF reads so much air going through due it being at WOT for a few seconds. that it balances itself out. __________________ 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.

April 14th, 2009, 10:39 PM	#15
92 LX 5.0 Newbie 1992 Mustang lx Join Date: Apr 2009 Location: Pleasant View, Tn Posts: 9 iTrader: 0 reviews	yeah i thought the same thing but i have checked for vac leaks haven't found any and the car idles very well vac is 11 inches at idle but im not sure what it should be for my e303 cam

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