i need ideas of what the problem might be

1TITAN · February 20th, 2011, 05:36 PM

the car : 01 mustang gt

set up: 03 f150 block and heads
long tube headers, catless h-pipe, side exhaust
cold air intake, 70mm throttle body
(thats it for engine stuff)

the car ran at the track last year in february with outside temp at about 70 degrees it ran a 13.98 @ 99mph

the problem: the car slowly is moving losing power some how and some where and i cant figure out why. it doesnt run funny at all which is whats so odd, it doesnt hesitate, stumble, bog down...... its has a loss of low end power to the point that it wont spin the tires from a stand still, and the top end doesnt really seem that much better

the last time i went to the track was this past november and the conditions were almost identical to the february run with temp. at about 75...... this car ran a 15.67 @ 88mph

highly embarrassing even more confusing because im not sure where to start or what i might be missing.

any help would be greatly appreciated

03gtmonster · February 21st, 2011, 12:55 AM

says in your sig "computer tune" if you did that between your two track visits maybe a bad tune could be the problem. you could call the guys at Next Level Performance and im sure they could assist you for a good price, or to just give you some help/ideas. good luck

1TITAN · February 21st, 2011, 07:48 PM

the computer tune has remained the same for about 2 years >:/

jk_aktion · February 23rd, 2011, 11:37 PM

where at in orlando? don't mind if i come check it out would you.?

1TITAN · March 3rd, 2011, 12:05 AM

im in wintergarden (west orlando)

i checked to see if any codes where thrown and what i found was that

b1220 (Fuel Tank Pressure Sensor Circuit Open)

i understand that the fuel system isnt there then the car will run like shit but..... what exactly does this code mean is happening to the car?
if any one knows

1TITAN · March 4th, 2011, 06:50 PM

fuel pressure regulator?...
if it was bad would the car still run?

86er · March 6th, 2011, 04:56 PM

you dont have a fuel pressure regulator, fuel pressure is done by pulse width modulation of the fuel pump by the driver. More pressure, more voltage, less pressure, less voltage.

Id start with the simple stuff, clean/replace the air filter. New fuel filter, new plugs. Basic maintance is grossly over looked by most on this board.

1TITAN · March 6th, 2011, 11:00 PM

thats a good point,
im gonna feel like a jackass if its somethin like that

Trentimus · March 7th, 2011, 04:42 AM

Originally Posted by 1TITAN

thats a good point,
im gonna feel like a jackass if its somethin like that

It's okay to feel like a jackass if it is because that's a cheap fix

1TITAN · April 4th, 2011, 01:57 AM

its taken me a while but i put a fuel pressure gauge to the car and at an idle it only makes
25psi (its supposed to be between 40-70)

so this information coupled with the code that i read from the ecu, does any body think with out a reasonable doubt that it has something to do with the FRPS?

1TITAN · April 4th, 2011, 04:44 PM

i just read my own powt and realized ive been talking about the wrong sensor...

the code i threw was in regards to the FUEL TANK PRESSURE SENSOR and not the frps

so time to ask again, does any one know the symptoms of a fail FUEL TANK PRESSURE SENSOR?
how hard is it to replace?
is this somehow the reason for my cars questionable performance?

February 20th, 2011, 05:36 PM	#1
1TITAN Regular 01 mustang gt 13.98@100 Join Date: Oct 2007 Location: Orlando, Florida Posts: 265 iTrader: 0 reviews	i need ideas of what the problem might be the car : 01 mustang gt set up: 03 f150 block and heads long tube headers, catless h-pipe, side exhaust cold air intake, 70mm throttle body (thats it for engine stuff) the car ran at the track last year in february with outside temp at about 70 degrees it ran a 13.98 @ 99mph the problem: the car slowly is moving losing power some how and some where and i cant figure out why. it doesnt run funny at all which is whats so odd, it doesnt hesitate, stumble, bog down...... its has a loss of low end power to the point that it wont spin the tires from a stand still, and the top end doesnt really seem that much better the last time i went to the track was this past november and the conditions were almost identical to the february run with temp. at about 75...... this car ran a 15.67 @ 88mph highly embarrassing even more confusing because im not sure where to start or what i might be missing. any help would be greatly appreciated __________________ destroy in the turns, then obliterate on the straightaway 01 GT 4.6/20 over cold air intake/70 mm throttle body mac longtube headers/custome H pipe/moroso spiral mufflers to side exhaust computer tune race seats / 5 point harness

February 21st, 2011, 12:55 AM	#2
03gtmonster Regular 2003 mustang GT Join Date: May 2010 Location: plymouth, MI Posts: 69 iTrader: 0 reviews	says in your sig "computer tune" if you did that between your two track visits maybe a bad tune could be the problem. you could call the guys at Next Level Performance and im sure they could assist you for a good price, or to just give you some help/ideas. good luck __________________ MAC long tubes, MAC O/R midpipe,american thunder catback, MAC cold air intake, MAC UD pulleys, C&L plenum, 75mm roush TB, TCI torque conv, zex wet 100 shot, dyno tune, H&R SS springs, and 4.10's.

February 21st, 2011, 07:48 PM	#3
1TITAN Regular 01 mustang gt 13.98@100 Join Date: Oct 2007 Location: Orlando, Florida Posts: 265 iTrader: 0 reviews	the computer tune has remained the same for about 2 years >:/ __________________ destroy in the turns, then obliterate on the straightaway 01 GT 4.6/20 over cold air intake/70 mm throttle body mac longtube headers/custome H pipe/moroso spiral mufflers to side exhaust computer tune race seats / 5 point harness

March 3rd, 2011, 12:05 AM	#5
1TITAN Regular 01 mustang gt 13.98@100 Join Date: Oct 2007 Location: Orlando, Florida Posts: 265 iTrader: 0 reviews	im in wintergarden (west orlando) i checked to see if any codes where thrown and what i found was that b1220 (Fuel Tank Pressure Sensor Circuit Open) i understand that the fuel system isnt there then the car will run like shit but..... what exactly does this code mean is happening to the car? if any one knows __________________ destroy in the turns, then obliterate on the straightaway 01 GT 4.6/20 over cold air intake/70 mm throttle body mac longtube headers/custome H pipe/moroso spiral mufflers to side exhaust computer tune race seats / 5 point harness

March 4th, 2011, 06:50 PM	#6
1TITAN Regular 01 mustang gt 13.98@100 Join Date: Oct 2007 Location: Orlando, Florida Posts: 265 iTrader: 0 reviews	fuel pressure regulator?... if it was bad would the car still run? __________________ destroy in the turns, then obliterate on the straightaway 01 GT 4.6/20 over cold air intake/70 mm throttle body mac longtube headers/custome H pipe/moroso spiral mufflers to side exhaust computer tune race seats / 5 point harness

February 23rd, 2011, 11:37 PM	#4
jk_aktion Regular Join Date: Jan 2011 Posts: 380 iTrader: 2 reviews	where at in orlando? don't mind if i come check it out would you.?

March 6th, 2011, 04:56 PM	#7
86er I Post Entirely Way Too Much Join Date: Nov 2006 Location: Memphis, TN Posts: 7,630 iTrader: 0 reviews	you dont have a fuel pressure regulator, fuel pressure is done by pulse width modulation of the fuel pump by the driver. More pressure, more voltage, less pressure, less voltage. Id start with the simple stuff, clean/replace the air filter. New fuel filter, new plugs. Basic maintance is grossly over looked by most on this board. __________________ Just a truck 5.4 3v: 264hp 317ft lbs rock stock The "search" button, its not just for porn piecing together the next project faster than your first sexual experience

March 6th, 2011, 11:00 PM	#8
1TITAN Regular 01 mustang gt 13.98@100 Join Date: Oct 2007 Location: Orlando, Florida Posts: 265 iTrader: 0 reviews	thats a good point, im gonna feel like a jackass if its somethin like that __________________ destroy in the turns, then obliterate on the straightaway 01 GT 4.6/20 over cold air intake/70 mm throttle body mac longtube headers/custome H pipe/moroso spiral mufflers to side exhaust computer tune race seats / 5 point harness

April 4th, 2011, 01:57 AM	#10
1TITAN Regular 01 mustang gt 13.98@100 Join Date: Oct 2007 Location: Orlando, Florida Posts: 265 iTrader: 0 reviews	its taken me a while but i put a fuel pressure gauge to the car and at an idle it only makes 25psi (its supposed to be between 40-70) so this information coupled with the code that i read from the ecu, does any body think with out a reasonable doubt that it has something to do with the FRPS? __________________ destroy in the turns, then obliterate on the straightaway 01 GT 4.6/20 over cold air intake/70 mm throttle body mac longtube headers/custome H pipe/moroso spiral mufflers to side exhaust computer tune race seats / 5 point harness

April 4th, 2011, 04:44 PM	#11
1TITAN Regular 01 mustang gt 13.98@100 Join Date: Oct 2007 Location: Orlando, Florida Posts: 265 iTrader: 0 reviews	i just read my own powt and realized ive been talking about the wrong sensor... the code i threw was in regards to the FUEL TANK PRESSURE SENSOR and not the frps so time to ask again, does any one know the symptoms of a fail FUEL TANK PRESSURE SENSOR? how hard is it to replace? is this somehow the reason for my cars questionable performance? __________________ destroy in the turns, then obliterate on the straightaway 01 GT 4.6/20 over cold air intake/70 mm throttle body mac longtube headers/custome H pipe/moroso spiral mufflers to side exhaust computer tune race seats / 5 point harness

Remove Advertisements Sponsored Links
Ford Mustang Forum Advertisement

Threads Similar to: i need ideas of what the problem might be
Thread	Thread Starter	Forum	Replies	Last Post
misfire problem, probelms, probably a problem?	rewadferger	96-98	5	September 13th, 2010 12:17 PM
just solved my evap problem now a more serious problem arises I NEED HELP please	sj408	96-98	5	July 16th, 2010 08:12 PM
Transmission problem??? need help diagnosing the problem...	Tmac3320	99-04	19	April 13th, 2009 12:58 AM
on going problem and ideas please help	ricvpi	96-98	6	February 27th, 2009 04:29 PM
umm have a weird problem? idle problem?	blue03mach1	99-04	16	March 4th, 2008 12:03 PM

All times are GMT -4. The time now is 04:17 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.