car wont start(think its optispark)
04-24-2004, 08:56 PM
#1
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Join Date: Jun 2003
Posts: 273
car wont start(help fast please)
ok the other day i bought a 93 trans am with an lt4, with (436 hp i am so happy
) the car has 96k miles and the engine/tranny have around 10k
but the other day i had my first problem, when my car had troubles starting it was turning, but not firing up. then the next couple days it seems as if i had to turn it and turn it longer before it would finally start, one time i was driving and i rpms dropped and i couldnt get accelerate... today i couldnt start it at all, it turns good, and their is fuel getting to the engine the engine just wont fire up...ive heard of the optispark but am not to smart about lt1/4s*seeing as this is my first* so please give me info on what exactly this optispark is/does, where it's at, and how much it costs from various manufactures...
my dad seems to think its the coil is this a possiblity
if you can think of anything else it could be please tell me
any help is greatly appreciated
thanks
jp
) the car has 96k miles and the engine/tranny have around 10kbut the other day i had my first problem, when my car had troubles starting it was turning, but not firing up. then the next couple days it seems as if i had to turn it and turn it longer before it would finally start, one time i was driving and i rpms dropped and i couldnt get accelerate... today i couldnt start it at all, it turns good, and their is fuel getting to the engine the engine just wont fire up...ive heard of the optispark but am not to smart about lt1/4s*seeing as this is my first* so please give me info on what exactly this optispark is/does, where it's at, and how much it costs from various manufactures...
my dad seems to think its the coil is this a possiblity
if you can think of anything else it could be please tell me
any help is greatly appreciated
thanks
jp
Last edited by JP2005; 04-24-2004 at 09:28 PM.
04-24-2004, 09:09 PM
#2
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Join Date: Apr 2003
Location: Land O Lakes, FL
Posts: 880
The optispark is the distributor for the LTx engines and it is located behind the water pump. And yes, from the symptoms, it sounds like your opti is gone bad.
The best person to get one from is Jason Cromer, do a search under his name and you will find his contact information. I think it is about $230 for a new one. Good luck.
The best person to get one from is Jason Cromer, do a search under his name and you will find his contact information. I think it is about $230 for a new one. Good luck.
04-25-2004, 04:51 PM
#5
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Join Date: May 1999
Location: St.Louis.Mo,USA
Posts: 215
That is the exact same thing that happened to my 94 T/A. It was the opti. I replaced the waterpump a few months before, cause it was leaking out of the weephole. I am guessing the coolant killed te opti also.
Mike
Mike
04-25-2004, 08:17 PM
#6
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Join Date: Feb 2003
Location: Statesville NC
Posts: 1,109
this should help you diagnose the problem as well as get you familiar with teh LT1 ignition and fuel system
http://mainstreamtopics.com/forum/in...p?showtopic=78
http://mainstreamtopics.com/forum/in...p?showtopic=78
04-26-2004, 08:37 AM
#7
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Join Date: Dec 2002
Location: Gloucester-Spfld Mass
Posts: 966
When you turn it over does it want to start but only diesels or sounds like it is popping or running at 150 rpms? it is the opti and it needs replacing, unplug the coil wire to the opti and turn it over, do you see spark?? Unplug the number one plug wire from the spark plug and turn it over. Do you see spark?? otherwise opti time
04-26-2004, 02:40 PM
#8
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Join Date: Sep 1998
Location: Oakville, Ontario
Posts: 679
A couple of weeks ago I thought for sure my opti was toast. It took me at least 30 tries to get the car started, then a few days later it would just not rev beyond 5000 without major misfiring. It was idling like crap too.
Turns out my coil wire was burnt. Got it replaced, along with a fresh coil for good measure, and she's good as new now. So don't always assume the worst.
Turns out my coil wire was burnt. Got it replaced, along with a fresh coil for good measure, and she's good as new now. So don't always assume the worst.
04-26-2004, 04:17 PM
#9
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Location: Brunswick, Maine 04011
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Originally posted by grygst76
When you turn it over does it want to start but only diesels or sounds like it is popping or running at 150 rpms? it is the opti and it needs replacing, unplug the coil wire to the opti and turn it over, do you see spark?? Unplug the number one plug wire from the spark plug and turn it over. Do you see spark?? otherwise opti time
When you turn it over does it want to start but only diesels or sounds like it is popping or running at 150 rpms? it is the opti and it needs replacing, unplug the coil wire to the opti and turn it over, do you see spark?? Unplug the number one plug wire from the spark plug and turn it over. Do you see spark?? otherwise opti time
But I have a brand new opti, wires, coil, ICM, starter, battery, alternator, plugs, and PCM...... Hmmmmmm.
04-26-2004, 10:03 PM
#10
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Join Date: Dec 2002
Location: Gloucester-Spfld Mass
Posts: 966
Originally posted by tnthub
That sounds like what is happening on my car.....
But I have a brand new opti, wires, coil, ICM, starter, battery, alternator, plugs, and PCM...... Hmmmmmm.
That sounds like what is happening on my car.....
But I have a brand new opti, wires, coil, ICM, starter, battery, alternator, plugs, and PCM...... Hmmmmmm.
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