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

i got it running there is a new problem

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Old 06-15-2010, 12:20 AM
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Default i got it running there is a new problem

Hey im new here and i just bought my 93 firebird
anyway i just wanted to see if anyone could tell me if or what u would think could b the problem with my car

soooo...... it will start and it only stays running for a few moments and dies u can start it back up it idles like crap and when u give it gas it feels like it wants to die???????????

Thanks

Last edited by 93FireBirD; 06-18-2010 at 12:31 AM. Reason: change title
Old 06-15-2010, 12:35 AM
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first of all, welcome

Sounds like that could be one of many things. Not to fear though, it usually turns out to be something simple, finding what it is the hard part


Can you give us a little more info on your car?

How many miles are on it?
When was the most recent tune-up(if you know)
Have you checked anything over yet? (Spark plugs, spark plug wires, fuel filter, ect.)
Are there any modifications done to the car, or is it a stock motor?
Have you had any work done on it?
Did the previous owner tell you anything that was "wrong" with the car?

every bit of information you'd be able to give us would be great and would multiply the chances of figuring out your problem.

again, welcome...get that thing running good and you'll never regret buying it...keep your head up
Old 06-15-2010, 12:41 AM
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Welcome my child,lol

Answer questions above and let us know.

how long will it run for before it dies out. Also when it dies out can you start it up immediately?
Old 06-15-2010, 12:46 AM
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well first of thank u

miles-about 118xxx
tune-up-- suposably what was done was plugs and wires
i have not got the chance to over look all that
car is stock
no work has bn done
the previous owner said the distributer cap needs to b done
that is about all i kno
Old 06-15-2010, 12:48 AM
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Welcome my child,lol

Answer questions above and let us know.

how long will it run for before it dies out. Also when it dies out can you start it up immediately?


to answer you the car runs for maybe a min. or two and yes it starts back up
Old 06-15-2010, 01:13 AM
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Originally Posted by 93FireBirD
well first of thank u

miles-about 118xxx
tune-up-- suposably what was done was plugs and wires
i have not got the chance to over look all that
car is stock
no work has bn done
the previous owner said the distributer cap needs to b done
that is about all i kno
The "distributor cap" comment definately throws up a red flag in my mind. You more than likely have an issue with your Optispark, which is a unique style of distributor to the LT1 motor. They are notorious for problems. It is untraditionally located at the front of your motor, under the water pump and crank hub. Many times these go bad due to moisture getting trapped in them. This is even more prone to the earlier model LT1's (like your '93) because they where unvented (newer models have vented optisparks, which allow them to last longer in many cases)

I would check over the plugs and wires, and make sure you don't have any fouled up plugs (take several of them out, and verify that they are new/in good condition). Also check for any burns or tears on your plug wires.

If it comes down to you needing a new distributor (which it very well may) get on here and let us know, we will help steer you down the right path on correctly replacing the optispark and what and what NOT to buy.
Old 06-15-2010, 01:52 AM
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might look into fuel pump too. u dont mind i ask how much you bought it for ?
Old 06-15-2010, 05:54 AM
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Welcome ! Like Master Tomos said I'd start with that opti.
Old 06-15-2010, 09:36 AM
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Originally Posted by MasterTomos
The "distributor cap" comment definately throws up a red flag in my mind. You more than likely have an issue with your Optispark, which is a unique style of distributor to the LT1 motor. They are notorious for problems. It is untraditionally located at the front of your motor, under the water pump and crank hub. Many times these go bad due to moisture getting trapped in them. This is even more prone to the earlier model LT1's (like your '93) because they where unvented (newer models have vented optisparks, which allow them to last longer in many cases)

I would check over the plugs and wires, and make sure you don't have any fouled up plugs (take several of them out, and verify that they are new/in good condition). Also check for any burns or tears on your plug wires.

If it comes down to you needing a new distributor (which it very well may) get on here and let us know, we will help steer you down the right path on correctly replacing the optispark and what and what NOT to buy.
Well thank you and i will do that all and i will get back to everyone and let u guys now what i find out
Old 06-15-2010, 09:39 AM
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Originally Posted by killagt
might look into fuel pump too. u dont mind i ask how much you bought it for ?

i will also look into the fuel pump thanks and i dont mind i got it for 1200
Old 06-15-2010, 09:45 AM
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i also for got to tell everyone....

there is no check engine light or nothing.....
Old 06-15-2010, 10:55 AM
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how long have you drive it ? the preview owner might reset the ECU. Keep driving you will get check engine light.
Old 06-15-2010, 01:46 PM
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Originally Posted by killagt
how long have you drive it ? the preview owner might reset the ECU. Keep driving you will get check engine light.
i cant drive it cuz like i said from the begining the car does not stay running for more than a few min. or less
Old 06-15-2010, 09:36 PM
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...............................
Old 06-15-2010, 09:41 PM
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Put a scanner on it, I bet you have code 16, and or 36. You can also look at your o2's to see if their working properly. If you don't have one and intend to keep your car you the scanning capabilities will help you out alot.
Old 06-15-2010, 09:45 PM
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Originally Posted by pro94lt
Put a scanner on it, I bet you have code 16, and or 36. You can also look at your o2's to see if their working properly. If you don't have one and intend to keep your car you the scanning capabilities will help you out alot.
i will check that as well thanks
Old 06-15-2010, 11:23 PM
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Apologies if I missed it, but nobody said fuel filter. A good $15.00 investment if its age isn't known... many good things have been brought up so far.
Old 06-16-2010, 09:37 AM
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Originally Posted by Gojira94
Apologies if I missed it, but nobody said fuel filter. A good $15.00 investment if its age isn't known... many good things have been brought up so far.
yes will check that to thanks...............
Old 06-17-2010, 12:25 AM
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^yea, fuel filter is something that's an easy do-it yourself thing too, completely forgot about that. I was recomended a WIX filter, it was right around $20...the filter itself is right behind the driver's side door under the car in the fuel line (obviously)...easy to do, also I'd reccomend taking a sharpie and writing the install date on it...just a good reference for everyone
Old 06-17-2010, 06:32 PM
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well guys after getting 5 gals. of gas the car started right up but still ran like crap so i went and got sum plugs it took a hour to vhange them out and now it runs good so i took it for a test drive and i went to slam the gas the car did not move????? i know it needs a trans mount but w.e else idk...............

here are sum pics of old plugs






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