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why does this happen?

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Old Aug 31, 2006 | 08:57 PM
  #1  
johnnyboy's Avatar
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From: western ny
Car: '82 formula clone, 95 saab 900se
Engine: 350 vortec'd tbi, 2.0L turbo
Transmission: 700r4, 5 spd
Axle/Gears: 10 bolt 2.77 open
why does this happen?

i have an '89 formula w/ 305 tbi. if driving at idle i stomp on the gas the engine seems to cut out and then a second later it will just take off, is this a timing problem? or maybe transmission? what do you think?
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Old Aug 31, 2006 | 10:21 PM
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From: Hamilton
Car: 1990 IROCZ Camaro
Engine: 350 4bbl, 200cc Heads, 270hr Cam
Transmission: 700R4 w/ Trans-Go shift kit.
Axle/Gears: GM 10 bolt Posi
Originally Posted by johnnyboy
i have an '89 formula w/ 305 tbi. if driving at idle i stomp on the gas the engine seems to cut out and then a second later it will just take off, is this a timing problem? or maybe transmission? what do you think?

Well, the shift lag on the 700R4 is pretty bad, I mean, you get bucked foreward for a good full second before your transmission downshifts. It's supposed to happen. Shift kits will fix this.
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Old Sep 1, 2006 | 08:12 PM
  #3  
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From: western ny
Car: '82 formula clone, 95 saab 900se
Engine: 350 vortec'd tbi, 2.0L turbo
Transmission: 700r4, 5 spd
Axle/Gears: 10 bolt 2.77 open
what kind of shift kit would be the best for the money?
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Old Sep 1, 2006 | 09:37 PM
  #4  
Coach Hawk's Avatar
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From: Evansville, Wisconsin
Car: 91' Pontiac Firebird
Engine: LT1
Transmission: 4L60E
Trans-Go. Don't waste your money on a B&M or other "cheap" shift kits.
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Old Sep 1, 2006 | 11:27 PM
  #5  
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From: Hamilton
Car: 1990 IROCZ Camaro
Engine: 350 4bbl, 200cc Heads, 270hr Cam
Transmission: 700R4 w/ Trans-Go shift kit.
Axle/Gears: GM 10 bolt Posi
Agreed. TransGo makes your shifts faster and harder the right way...others give a somewhat Jerry-rigged approach.
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Old Sep 1, 2006 | 11:41 PM
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From: Montana
Car: 85 IROC
Engine: L-69 305
Transmission: T-5 manual
from what you describe it has nothing ot do with the tranny, the tranny doesnt downshift from idle for one, and it wouldnt make the engine cut out

just noticed that you said driving at idle, not sitting. so it could be the tranny lag, but that still wouldnt make the engine cut out

sounds to me like its flooding for a second before it starts to rev up
mine does it a little bit to

when your at idle dont mash it to the floor, go halfway for a split second then go to the floor, see fo that works better

Last edited by irocbarry; Sep 1, 2006 at 11:45 PM.
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Old Sep 2, 2006 | 03:18 AM
  #7  
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From: Casselberry, FLA
Car: 88 V6 'bird/89TBI bird/85 T/A
Engine: 2.8/TBI/TPI
Transmission: V8 T-5/700R4 x2
Axle/Gears: 3.42 open/2.73 open/ 3.27 9 bolt
Check your tune-up again, man. Especially the cap and rotor button...
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Old Sep 2, 2006 | 03:22 AM
  #8  
Xophertony's Avatar
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From: Or-eh-gun
Car: 2012 Nissan Leaf
Engine: 80-kW AC synchronous electric motor
Transmission: Automatic
Axle/Gears: n/a
coulld also be your fuel pump is on it's way out. my car did this for a few months before it's fuel pump went out, new pump and the problem was gone.
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