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07-21-2014
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#1 |
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Join Date: Dec 2012
Location: NC
Posts: 1,783
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Why don't they start right up?
Does any one know with certainty why LT5 doesn't start right up immediately?
Was it the same way on the showroom floor?  This is the first electronically FI car I've owned that didn't do so instantly. Even the first one I owned, an L-98 that was in a poor state of tune when I got it, would start immediately. Foreign, domestic, 4's, 6's, etc. On RARE occasions, it WILL fire almost instantly. But most of the time, it's 2 - 3 seconds. And I'll let off the starter then, and re-try. I thought I read once on the boards here that ECM had to see some crankshaft position first, before issuing fire @ the plugs; this would mean, if correct, that it WOULD have exhibited the same behavior at the dealer, when new. Does anyone know DEFINITIVELY the answer here?
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07-21-2014
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#2 | |
  
Join Date: Jun 2005
Location: pittsburgh
Posts: 4,624
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Re: Why don't they start right up?
Quote:
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It's not the car, it's the people - Doug Johnson 90 r/r "KEYS ON" nick named "T.L.B" |
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07-21-2014
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#3 |
 
Join Date: Feb 2012
Location: Ledyard,CT
Posts: 8,301
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Re: Why don't they start right up?
Never noticed!
Mine starts right up with a good battery. |
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07-21-2014
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#4 |
 
Join Date: May 2007
Location: Westminster, Maryland
Posts: 3,684
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Re: Why don't they start right up?
It could be because the Crankshaft has to rotate until the Ignition Module gets a signal from the Crankshaft Position Sensor so it can determine the correct ignition timing.
Jim |
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07-21-2014
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#5 |
 Join Date: Aug 2012
Location: Boone County, Indiana
Posts: 132
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My lo-mile '91
with new Accel injectors and a good (batt-tender maintained)charge, has to crank a couple seconds to fire...and I'm always thrilled it did...
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07-21-2014
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#6 | |
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Join Date: Apr 2004
Location: Atlanta, GA
Posts: 2,169
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Re: Why don't they start right up?
Quote:
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Steve 1990 Steel Blue/Black #2355 1990 Red/Red #1473 1991 Quasar /Black #118 Sold 1991 Turquoise/Black #766 Parted Out 1993 Yellow/White #179 Sold 1990 Black/Gray #1361 Headers/4:10s Sold |
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07-21-2014
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#7 |
Join Date: Sep 2012
Location: Rockwall, Tx
Posts: 1,504
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Re: Why don't they start right up?
It could just be in my head but I've noticed it seems to fire quicker when I turn on the ignition and wait a couple of secs before engaging the starter.
__________________
_________________ 1994 AB/Grey #141 430 RWHP/392 RWTQ FBI Lyposuction / Secondaries relieved of duty / SW Long Tube Headers / Corsa Exhaust / FIC SS Injectors / MSD Coils / Lightweight Pulleys / Corey tuned B & M Shifter / Aluminum Flywheel / Samco Hoses / Shelby Series One's / C4 No Flex Frame Stiffener BBC - Bling By Carter: Custom ZR-1 Center Caps / Custom Plenum Plate / Air Box Knobs / TB Cover / Oil Filter Cover |
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07-21-2014
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#8 | |
Join Date: Oct 2013
Location: Wichita Falls,Tx
Posts: 594
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Re: Why don't they start right up?
Quote:
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07-21-2014
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#9 |
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Join Date: Feb 2012
Location: Ledyard,CT
Posts: 8,301
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Re: Why don't they start right up?
Try starting my 32!
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07-21-2014
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#10 |
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Join Date: Sep 2012
Location: Rockwall, Tx
Posts: 1,504
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Re: Why don't they start right up?
My Dad's '31 Model A starts so fast we had a standing challenge: If you can engage the starter at all and it not start he would buy dinner.
He never bought dinner....
__________________
_________________ 1994 AB/Grey #141 430 RWHP/392 RWTQ FBI Lyposuction / Secondaries relieved of duty / SW Long Tube Headers / Corsa Exhaust / FIC SS Injectors / MSD Coils / Lightweight Pulleys / Corey tuned B & M Shifter / Aluminum Flywheel / Samco Hoses / Shelby Series One's / C4 No Flex Frame Stiffener BBC - Bling By Carter: Custom ZR-1 Center Caps / Custom Plenum Plate / Air Box Knobs / TB Cover / Oil Filter Cover |
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