Poor Acceleration

bcinyuz · 03-30-2001, 04:47 PM

These are my mods

BBK cold air induction
BBK 65mm throttle body
Edlebrock performer 5.0 intake
24# injectors
190 litre per hour fuel pump
fuel pressure regulator and gague
dart Windsor Jr heads
crane cams fulcrum roller tiped rocker arms
Headmman 1-5/8 shorty headders
Flowtech 2-1/2 off-road H-pipe
Magnaflow mufflers
2-1/2 mandrel bent over the axle tubbing
3" turndowns
5-speed manual trans
ford motorsports aluminum driveshaft
3.73 rear gears
B&M ripper shifter
Johnson Motorsports computer chip
C&L 73mm mass air meter
Mcleod Pressure plat
Center Force 2 clutch disk
Bosh platinum spark plugs
8mm wires
Accel Coil

The problem I'm having is when I accelerate does't matter what gear i'm in, kind of hard to explain but it seems to want to quit then a split second later it comes alive again. I hope you can help me solve this problem.

[This message has been edited by bcinyuz (edited 03-30-2001).]

blueneonman1 · 04-01-2001, 05:19 AM

I had the same problem when i first put on my hi-flow cats. When I accelerated in mostly 2nd gear, the car would seem to stall, then pick up and go. Also, shortly after I installed the hi-flows, the check engine light came on for awhile and freaked me out, but then it went off. It doesnt do this anymore, so what i think it was was the computer trying to adjust to the new setup and adjusting timing. Have you recently installed and of your mods? However, i think it may be timing.

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Blueneonman - '95 5.0L Mustang GT Convertible | K&N Drop-in | FMS 9mm Wires | Hollow Cats | Flowmaster 2 Chambers | Subframes | 6-pt Rollcage | 14deg Timing | Coolest Neon Lighting on a Mustang EVER!

dinomite · 04-01-2001, 03:00 PM

You can speed up the computer's re learing by disconnecting your neg battery cable for 30 min which will reset the computer. Then put it back on, start the car and let it idle for about a minute, then you should be set.

Godslayer · 04-01-2001, 08:47 PM

Back in the day, tip-in hesitation would lean toward bad accelerator pump, but now things are much more elctrical. Common causes of hesitation are an interruption in fuel, a fading IAB valve/motor, or TPS. Check those first. Also check the computer, it will provide tremendous help and steer you right to the root of the problem. In 2 years I've never had a problem I couldn't immediately identify and fix. Get into the habit of checking the computer every month and fix any problems that come up. It will save you some day, trust me.

Most problems nowadays with poor motor performance are electrical, not mechanical. Good luck, and email me if you have any specific questions. I have a really good book. deathblowbob@netzero.net

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87 GT
Full exhaust, K&N, KB Subs, BBK STB, homeade dumps...

87 Taurus
New York
Winters Bite!

03-30-2001, 04:47 PM	#1
bcinyuz Registered Member Join Date: Aug 2000 Location: lodi,ca,usa Posts: 86	Poor Acceleration These are my mods BBK cold air induction BBK 65mm throttle body Edlebrock performer 5.0 intake 24# injectors 190 litre per hour fuel pump fuel pressure regulator and gague dart Windsor Jr heads crane cams fulcrum roller tiped rocker arms Headmman 1-5/8 shorty headders Flowtech 2-1/2 off-road H-pipe Magnaflow mufflers 2-1/2 mandrel bent over the axle tubbing 3" turndowns 5-speed manual trans ford motorsports aluminum driveshaft 3.73 rear gears B&M ripper shifter Johnson Motorsports computer chip C&L 73mm mass air meter Mcleod Pressure plat Center Force 2 clutch disk Bosh platinum spark plugs 8mm wires Accel Coil The problem I'm having is when I accelerate does't matter what gear i'm in, kind of hard to explain but it seems to want to quit then a split second later it comes alive again. I hope you can help me solve this problem. [This message has been edited by bcinyuz (edited 03-30-2001).]

04-01-2001, 05:19 AM	#2
blueneonman1 Registered Member Join Date: Mar 2001 Location: Palm Harbor, FL Posts: 208	I had the same problem when i first put on my hi-flow cats. When I accelerated in mostly 2nd gear, the car would seem to stall, then pick up and go. Also, shortly after I installed the hi-flows, the check engine light came on for awhile and freaked me out, but then it went off. It doesnt do this anymore, so what i think it was was the computer trying to adjust to the new setup and adjusting timing. Have you recently installed and of your mods? However, i think it may be timing. ------------------ Blueneonman - '95 5.0L Mustang GT Convertible \| K&N Drop-in \| FMS 9mm Wires \| Hollow Cats \| Flowmaster 2 Chambers \| Subframes \| 6-pt Rollcage \| 14deg Timing \| Coolest Neon Lighting on a Mustang EVER!

04-01-2001, 03:00 PM	#3
dinomite The Dude Join Date: Feb 2001 Location: Arlington, VA Posts: 1,262	You can speed up the computer's re learing by disconnecting your neg battery cable for 30 min which will reset the computer. Then put it back on, start the car and let it idle for about a minute, then you should be set.

04-01-2001, 08:47 PM	#4
Godslayer Registered Member Join Date: Mar 1999 Location: Largo, FL USA Posts: 274	Back in the day, tip-in hesitation would lean toward bad accelerator pump, but now things are much more elctrical. Common causes of hesitation are an interruption in fuel, a fading IAB valve/motor, or TPS. Check those first. Also check the computer, it will provide tremendous help and steer you right to the root of the problem. In 2 years I've never had a problem I couldn't immediately identify and fix. Get into the habit of checking the computer every month and fix any problems that come up. It will save you some day, trust me. Most problems nowadays with poor motor performance are electrical, not mechanical. Good luck, and email me if you have any specific questions. I have a really good book. deathblowbob@netzero.net ------------------ 87 GT Full exhaust, K&N, KB Subs, BBK STB, homeade dumps... 87 Taurus New York Winters Bite!