TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

cranks a few seconds before starting

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Old Jan 21, 2005 | 04:23 PM
  #1  
my 82 trans am's Avatar
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Car: 1990 Camaro RS
Engine: 5.0 liter TBI
Transmission: Borg Warner T-5
cranks a few seconds before starting

is this normal it turns over about 5 times before it starts. its running great now. i didnt know if i maybe needed to replace my ignition coil, dist. cap, and rotor button. how much would a new ignition coil be and how hard is it to change?
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Old Jan 21, 2005 | 06:50 PM
  #2  
90Formula305's Avatar
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From: Modesto, Killmefornia
Car: 1990 Pontiac Firebird Formula
Engine: 305
Transmission: 700 R4
Axle/Gears: peg leg
theres really nothing wrong with it cranking over a few times mine does too and it runs fine theres nothing to really worry about.
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Old Jan 21, 2005 | 10:20 PM
  #3  
Trickster's Avatar
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From: conway, s.c.
Car: 1989 Iroc-Z
Engine: 5.7L TPI
Transmission: 700R4
Mine does that also and it runs fine.
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Old Jan 21, 2005 | 10:31 PM
  #4  
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From: Moorestown, NJ
Car: 88 Camaro SC
Engine: SFI'd 350
Transmission: TKO 500
Axle/Gears: 9-bolt w/ 3.23's
Thats par for the course... Takes some time for the fuel to make its way down into the cylinders.
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Old Jan 21, 2005 | 11:29 PM
  #5  
GOY's Avatar
GOY
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Joined: Oct 2004
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From: Cleveland Ohio
Car: Formula, a big red brick.
Engine: A Ford 351 Windsor... ?
Transmission: Dodge 727
Welcome to the world of wet-flow intakes.
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Old Jan 22, 2005 | 10:55 PM
  #6  
dr1's Avatar
dr1
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From: Connecticut
Car: '89 Firebird Formula
Engine: 305 TBI
Transmission: T5
my carburated car cranks once or twice and its going..

I have the same problem with my formula its just getting downright annoying, id also like to figure out why its taking so long

but its gonna be in many peices in my garage in another couple weeks, and I may not ever getting it running right again if tuning is as hard as everyone claims, so lemme know what you find out :P
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Old Jan 22, 2005 | 10:58 PM
  #7  
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From: southeast Tennessee
might be wrong here but I have heard these cars wont start unless the ecm see's oil pressure so cranking a little before it hits
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Old Jan 23, 2005 | 02:44 AM
  #8  
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Car: Turbo Buick
Engine: 3.8 V6
Thats wrong


if that were the case you would be cranking a long time.

There is a fail safe for the priming and "fuel in crank" function in the ecm which is based upon seeing oil pressure. If the priming and "fuel in crank" goes out then youll have to crank till you see oil pressure in order for the fuel pump to see any power.
This used to happen to me way back when I had a faulty ECM, forget about starting it when hot. Youll crank till the battery is dead.
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