LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Challenge to all you real mechanics out there....figure this out

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Old 10-02-2010, 06:49 PM
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Default Challenge to all you real mechanics out there....figure this out

ALTERNATOR IS FINE, BRAND NEW BATTERY, FUSSES ARE ALL GOOD, NO CODES BEING THROWN...WHAT COULD BE WRONG WITH MY CAR..HERES A VIDEO OF WHAT THE CAR IS DOING AND NOT DOING (STARTING) CAN SOME ONE HELP ME OUT. THANKS

CLICK ON ENGINE TO VIEW VIDEO

Old 10-02-2010, 06:55 PM
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Are you getting spark to the plugs? Are you getting the pulse to the injectors. We need to know those two things
Old 10-02-2010, 06:58 PM
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^x2. Need to know those 2 things first.. Have you checked fuel pressure?
Old 10-02-2010, 07:01 PM
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Make sure you keep typing in all caps. That definitely makes people want to help you out even more mane
Old 10-02-2010, 07:10 PM
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Check spark first then fuel, is pump priming when you roll the key to run without the motor running? Do you have pressure in the lines, if you don't have these two things then there is no way it will start. Its probably ignition related, check you coil and block grounds as well. When was the last time it was running?
Old 10-02-2010, 07:29 PM
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We can confirm that the battery and starter is good in the video.

Beyond that, you'll need to test the usual, fuel & spark. When you turn the ignition key to "run" without cranking, do you hear the fuel pump run for about two seconds?

And +1 on killing the capslock
Old 10-02-2010, 07:39 PM
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fuel pump is in working condition.. friend of mines said theres no spark to plugs...car just died on me while i was driving 50 mph in town a week ago. (dont know if that helps any)
Old 10-02-2010, 07:50 PM
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Now you're narrowing it down. Is there spark at the coil?
Old 10-02-2010, 07:54 PM
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We need a picture of the UH Hum girl, good luck.
Old 10-02-2010, 07:57 PM
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how do i check spark to coil?
Old 10-02-2010, 09:36 PM
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Get a standard spark plug wire and an extra plug. Plug it onto the coil and then ground the plug on a header bolt and get someone to crank it. If the plug fires good and bright and almost a solid spark that means the coil is good.

If no spark then test the icm at autozone. It's more than likely gonna be coil, icm, or opti but may be some sort of burnt wire like I recently had. You can easily check all grounds and connections yourself.
Old 10-03-2010, 12:20 AM
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anyone else want to get in on the conversation? i need to get this car running again. thanks to everyone
Old 10-03-2010, 12:26 AM
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As stated already test the coil

Old 10-03-2010, 01:36 AM
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Sounds like the icm, that happened to me while going down the freeway, take the coil and the icm to autozone, they can test them both.
Old 10-03-2010, 11:11 AM
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x2 i believe he has an icm problem!
Old 10-03-2010, 02:39 PM
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If it shut right off like a lightswitch with zero warning, it very well could be a coil. I had that happen to me.
Old 10-03-2010, 02:47 PM
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TRy to push the pedal to the floor and see if it will start.

Also check to make sure you maf sensor, all injectors and other sensors are plugged in.

YOu will need to check fuel pressure, It definitely primes but you need to know if there is constant pressure.
Old 10-03-2010, 02:51 PM
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Forget the meter. Do you get spark out of the coil? If yes, do you get spark at the spark plug ends of the spark plug wires?

After all this cramking with no start, do you smell raw fuel?
Old 10-03-2010, 06:38 PM
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any updates?
Old 10-03-2010, 10:48 PM
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not yet...checking coil and icm tomorrow afternoon after work. hopefully i can figure it out soon.

list of ruled out possible problems..right?

battery
starter
fuel pump
alternator


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