95 mustang gt runs like crap - Forums at Modded Mustangs
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post #1 of 30 Old March 23rd, 2010, 08:25 AM Thread Starter
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95 mustang gt runs like crap

ok i have a 95 mustang gt 5.0 auto, it has 3.73 gears b&m shift kit, bbk underdrive pullys, hooker headers, h pipe, 40 series flowmasters, cold air intake, msd blaster coil, msd cap & rotor, sct chip, egr delete/smog the car runs nothing like it should it is about as fast as a Geo metro, The car runs fine down low you get on it and it goes no where, No check engine light nothing loses pretty much all power around 4200 rpm and will start cutting out. it has new header gasket because they were leaking. new plugs. wires, cap and rotor are new still nothing still doggy and slow up high. i don't even know where to began to look on what would be making it so doggy and slow if anyone has any info please feel free i am willing to listen and try anything thanks KYLE
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post #2 of 30 Old March 23rd, 2010, 09:12 AM
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Is it a catted H-pipe? If so, could be something as simple as clogged cats?
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post #3 of 30 Old March 23rd, 2010, 12:24 PM
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Yeah, clogged cats will definitely make the car feel doggy (pun intended).
Also try cleaning the MAF sensor wire.


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post #4 of 30 Old March 23rd, 2010, 12:44 PM
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Incorrect tune or check the timing

95 GT- AFR 185's, Comp CAM, Trick FLow TH upper and lower, 30lb injec, 76MM C&L kit, Full MSD, BBK Pulleys, 3:73, BBK Long Tubes, X Pipe, Magnaflow Cat back, Cobra front control arms, MM CC plates LCA's and Panhard bar, tuned by Adam @ Pops Racing.
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post #5 of 30 Old March 23rd, 2010, 01:38 PM
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cats could be stopped up.
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post #6 of 30 Old March 23rd, 2010, 03:16 PM Thread Starter
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the car does not have cats.. and even before chip it really didn't run much better! i am gonna check the timing and i am buying a new maf sensor. but if it is neither of them what do you think it could be! ps thanks for all the help and answers kyle
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post #7 of 30 Old March 23rd, 2010, 03:23 PM
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How do the plugs look?

Function > Form, always
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post #8 of 30 Old March 23rd, 2010, 11:55 PM
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Sounds like you have a bad fuel pump not supplying enough fuel when needed. Hook up a fuel pressure gauge to your fuel rails and monitor it make sure the psi is not dropping.

<img src=http://i676.photobucket.com/albums/vv122/ralvarez26/splogoub7.gif border=0 alt= />
97gt Pi swapped, sreamin demon coils, taylor wires, diablo chip, cai, 3.73s. 9.3 in 1/8 with no traction.
Boosted 95GT under construction.
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post #9 of 30 Old March 24th, 2010, 01:03 PM
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fuel filter? Plugs & plug wires? Motor could b bad?
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post #10 of 30 Old March 24th, 2010, 07:08 PM Thread Starter
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cap, rotor, plugs are new wires are not that old. what should the fuel pressure be? and the motor does not smoke only has 88k on it. i will check the maf, fuel pressure. the car idles and runs fine if you are not getting on it! but when you do get on it that is when it starts running like crap.
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post #11 of 30 Old March 25th, 2010, 12:11 AM
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Should be at about 30 to 40 not too sure. Also maybe your pressure regulator is messed up, make sure no gas in line when you remove the vacuum line to it.

<img src=http://i676.photobucket.com/albums/vv122/ralvarez26/splogoub7.gif border=0 alt= />
97gt Pi swapped, sreamin demon coils, taylor wires, diablo chip, cai, 3.73s. 9.3 in 1/8 with no traction.
Boosted 95GT under construction.
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post #12 of 30 Old March 25th, 2010, 12:15 AM Thread Starter
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i will check fuel pressure and pull the vac on the fuel pressure reg line and see what is going on. i will post up what it say/does tomorrow thanks everyone for all the answers and trying to help me out
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post #13 of 30 Old March 25th, 2010, 09:47 AM
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Did you clean the MAF sensor? Pull it out of the housing and gently clean the wire with a cotton bud soaked in brake cleaner.
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post #14 of 30 Old March 25th, 2010, 12:59 PM
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My dad had a truck once that run like that. Fuel pump went out off it when he put the new one in it run twice of good as it ever did. Could be a vacuum leak somewhere. Had buddy wit one once and put it back on and it fixed his problems
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post #15 of 30 Old March 25th, 2010, 01:54 PM Thread Starter
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checked the vacum line was dry so reg is good and working the car held 40psi running for 5min! i will clean the maf sensor and see what it does and ill let you know thanks for all the info.... kyle
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post #16 of 30 Old March 25th, 2010, 05:45 PM Thread Starter
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i just wanna get this thing running right so i can put my nitrous on it! i am to the point of messing with it about to put it on and blow it up lol! if anyone else has ideas to try let me know thanks kyle
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post #17 of 30 Old March 26th, 2010, 12:40 PM
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Really don't no wat else it could be then wat I have told ya
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post #18 of 30 Old March 26th, 2010, 02:49 PM
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Quote:
Originally Posted by kyleboyd View Post
checked the vacum line was dry so reg is good and working the car held 40psi running for 5min! i will clean the maf sensor and see what it does and ill let you know thanks for all the info.... kyle
ok 40 psi is good at idle, but I meant drive it and monitor the fuel pressure when you're driving and when you drive it like you stole it. I think your fuel pump is weak.

<img src=http://i676.photobucket.com/albums/vv122/ralvarez26/splogoub7.gif border=0 alt= />
97gt Pi swapped, sreamin demon coils, taylor wires, diablo chip, cai, 3.73s. 9.3 in 1/8 with no traction.
Boosted 95GT under construction.
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post #19 of 30 Old March 26th, 2010, 08:09 PM Thread Starter
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ok get this pulled the maf cleaned it and put it back on! the car had no difference! bought a new one car wouldn't rev above 3200... took it back thougth it was a bad one got my old one back! i said heck with it pulled the wireing off the maf and started car revs way better i know its not good on it but took it around the block car runs better then it ever has before. Any answer to that one?
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post #20 of 30 Old March 26th, 2010, 10:46 PM
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Bad MAF.

<img src=http://i676.photobucket.com/albums/vv122/ralvarez26/splogoub7.gif border=0 alt= />
97gt Pi swapped, sreamin demon coils, taylor wires, diablo chip, cai, 3.73s. 9.3 in 1/8 with no traction.
Boosted 95GT under construction.
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