5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

95 cobra surging

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Old 02-12-2005, 03:41 PM
  #1  
philly3384
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Default 95 cobra surging

my car surges after like 1500 rpms after i left on the gas it rises in rpms and sticks for a lil it drives me crazy anyone know why!!!!!!!!!!!!!!!!!
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Old 02-12-2005, 05:11 PM
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88PatrolCar
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Default RE: 95 cobra surging

Is this an auto? If it is you may be slipping in and out of gear which translates inta a problem with your shifting solanoids/servos.
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Old 02-12-2005, 05:19 PM
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sup95cobra
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Default RE: 95 cobra surging

I doubt it is an auto since it is a Cobra. Do you have a aftermarket cam?
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Old 02-12-2005, 06:08 PM
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philly3384
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Default RE: 95 cobra surging

its def a manual lol .. and yeah i have a e 303 cam and edelbrock performer heads.. with the 93 cobra computer.. cuz the 95 computer is bad with diff cams
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Old 02-13-2005, 12:06 AM
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anglia_stang
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Default RE: 95 cobra surging

first thing you need to do is check your TPS setting, it should be around .98-.99. if the TPS is set right then check for vacuum leaks.
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Old 02-13-2005, 01:47 AM
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sup95cobra
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Default RE: 95 cobra surging

Check you wires they could be shorting somewhere once the engine is under load.
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Old 02-13-2005, 02:57 AM
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philly3384
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Default RE: 95 cobra surging

how do u check the tps setting can u give me step by step?
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Old 02-13-2005, 03:26 AM
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sup95cobra
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ORIGINAL: philly3384

how do u check the tps setting can u give me step by step?
Do you have a DC voltage meter?
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Old 02-16-2005, 06:57 PM
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Default RE: 95 cobra surging

I'm having technical problems with this forum, so this is my 3rd and final attempt to reply.

If you don't know when your throttle body was cleaned last, I'll bet that this is the problem.

Get fuel injection safe carb cleaner. Don't use regular carb cleaner.

If you use a K&N filter, the oil will build up on the air flow sensor. You'll want to get pipe cleaner (you can get them at a craft store or Wal-Mart, don't be tempted to use a Q-tip). The sensor wire is about the thickness of a hair. You'll be able to tell if there is build up on it. Clean it very GENTLY.

I prefer to take off the throttle body to clean it, but it can be done on the car. It's also easier to check the TPS with it off.

There is also a post on the forum that even has pics.
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Old 02-18-2005, 03:25 AM
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mustang_mike_2003
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Default RE: 95 cobra surging


ORIGINAL: mmoto68

I'm having technical problems with this forum, so this is my 3rd and final attempt to reply.

If you don't know when your throttle body was cleaned last, I'll bet that this is the problem.

Get fuel injection safe carb cleaner. Don't use regular carb cleaner.

If you use a K&N filter, the oil will build up on the air flow sensor. You'll want to get pipe cleaner (you can get them at a craft store or Wal-Mart, don't be tempted to use a Q-tip). The sensor wire is about the thickness of a hair. You'll be able to tell if there is build up on it. Clean it very GENTLY.

I prefer to take off the throttle body to clean it, but it can be done on the car. It's also easier to check the TPS with it off.

There is also a post on the forum that even has pics.
MY GOD MAN ARE YOU F&*IN CRAZY?? dont EVER let ANYTHING touch that freakin sencer, only use the stuff mad to clean it.. its in a spray can, its for cleaning electrical sencers, and if you already swaped out the computer then try to make sure your plugs are clean, sencers are clean, wires are new and well spaced appart with plastic spacers about every 4-5 inches, cap and rotor are new, and if its still giving your problims then its the computer, chances are it dosent have the right calabration, if you bought it from a company send it back and have them reporgram it and send it back to you, but if you bought it off ebay or somthing, then your going to need a chip to fix her up...
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