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LTX and LSX Putting LT1's, LS1's, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects, including repairs, swap info, and performance upgrades.

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Old 09-30-2009, 02:52 PM   #1
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Join Date: Sep 2009
Location: SAN FRANCISCO
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Car: 87 GTA
Engine: L98 5.7 24#inj,World hds,MSD,nosmog
Transmission: 700R4 truck clutches,Trans go shift
Axle/Gears: 10 bolt chevy 3.73 limited slip

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LT1 no spark?

I have a issue maybe someone can help me with.I have no spark going to the dizzy and i get a "check gauge" on the cluster.The cars a 95 caprice and I just replaced the coil and still nothing.Is there anyway to check the control module to see if thats it or does anybody have any suggestions they will be highly appreciated thanks.
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Old 09-30-2009, 06:22 PM   #2
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Join Date: May 2004
Location: Kingsport Tenn
Posts: 977
Car: 1992 camaro
Engine: LT1
Transmission: 4L60E
Axle/Gears: 3:42

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Re: LT1 no spark?

I took my ICM to O'Reillys not sure if there is one near you but they can check them.
http://shbox.com/1/4th_gen_tech2.html#opti_test
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Old 09-30-2009, 10:45 PM   #3
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Join Date: Sep 2009
Location: SAN FRANCISCO
Posts: 40
Car: 87 GTA
Engine: L98 5.7 24#inj,World hds,MSD,nosmog
Transmission: 700R4 truck clutches,Trans go shift
Axle/Gears: 10 bolt chevy 3.73 limited slip

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Re: LT1 no spark?

Thanks for the site.Very helpful.I checked for power to the ICM and it was good then I checked the coil with the ICM hooked up and it was good so I'm ripping out the opti.Any suggestions on a different ign. system? cuz opti sucks.Thanks again.
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Old 10-01-2009, 03:53 PM   #4
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Join Date: May 2004
Location: Kingsport Tenn
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Car: 1992 camaro
Engine: LT1
Transmission: 4L60E
Axle/Gears: 3:42

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Re: LT1 no spark?

Befor you put the new opti on,take it apart and loctite the rotor screws and put some silicone where the opti where it gose together. I done and knock on wood I havent had any problems yet.
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Old 10-02-2009, 02:42 AM   #5
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Location: SAN FRANCISCO
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Car: 87 GTA
Engine: L98 5.7 24#inj,World hds,MSD,nosmog
Transmission: 700R4 truck clutches,Trans go shift
Axle/Gears: 10 bolt chevy 3.73 limited slip

Classifieds Rating: (0)
Re: LT1 no spark?

Yeah I did that about six months ago.This time I think the opti's done fore. Thanks for the input though.Oh and I bought a ICM before I got that thread to the sight on how to test it so now I'm stuck with it.It keeps gettin better and better.But at least the Birds runnin strong.(Knock on wood)Thanks again.
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Old 10-02-2009, 02:42 AM
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