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Ignition Module

Old May 4, 2009 | 04:59 PM
  #1  
GadeXTrigger's Avatar
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From: North Charleston
Car: 91 Camaro
Engine: 5.7Fl V8 350 tpi
Transmission: 700R4 Automatic
Ignition Module

I took off the ignition module off my 91 camaro how do i check if it's Good? the reason i took it off is because my camaro won't start and i got a new ignition coil and still no new results but i researched it on the forums and stuff and people with my kinda problem got a new ignition module and it fixed it. But i dont want to drop 40 bucks on a new one (high schooler going paycheck to paycheck) and wanted to know if there is any test to see if it's good or not?
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Old May 5, 2009 | 12:05 AM
  #2  
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From: Delta, BC
Car: '91 S10 Blazer
Engine: TBI 350
Transmission: 700R4
Axle/Gears: 3.73 posi
Re: Ignition Module

There are many modules in your module (ie, it does several things!).

You can't just meter it or something if that's what you're asking.

Most places like NAPA have module testers (well, so do I, but...) and will check stuff out for you. One thing to remember though, is that they'll be testing it at room temperature, and not under load. It's still possible for it to check out OK, but to fail in a real world situation.

Shall we assume you checked for spark during cranking, got none, and that's why you targeted your module for your no-start?
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Old May 5, 2009 | 05:13 AM
  #3  
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From: North Charleston
Car: 91 Camaro
Engine: 5.7Fl V8 350 tpi
Transmission: 700R4 Automatic
Re: Ignition Module

yes you shall assume that and be correct. so like autozone would have something to test it but it won't test it under load? which means....
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Old May 5, 2009 | 09:53 AM
  #4  
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From: Delta, BC
Car: '91 S10 Blazer
Engine: TBI 350
Transmission: 700R4
Axle/Gears: 3.73 posi
Re: Ignition Module

They'll test it, but as I said... it's on a bench.

It's different when it's heat soaked from the engine, and it's actually switching the coil (the worst part of it's life).

It'll give you a start though. It might just show up as bad! It IS a high failure rate part. You could also just get a junkyard one and try it.

Make sure you use a THIN layer of heat sink compound on it (just like a CPU) after cleaning the two mating surfaces.
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Old May 5, 2009 | 01:33 PM
  #5  
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From: MA
Car: '87 IROC/'68 SS
Engine: 5.7L/350
Transmission: 700R4/Muncie 4-spd
Axle/Gears: 3.27 9 bolt / 3.31 12 bolt
Re: Ignition Module

Whenever I get in one of those, I always change the module and the pickup coil. They should both be <$20 each. Clean the shaft while you have it apart and make sure there is no wobble in it. Don't forget the heatsink compound under the module.
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Old May 5, 2009 | 10:04 PM
  #6  
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From: North Charleston
Car: 91 Camaro
Engine: 5.7Fl V8 350 tpi
Transmission: 700R4 Automatic
Re: Ignition Module

ok how do i change the pickup coil?
and the heat sink compound?
suck it stinks being a newb lol
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Old May 6, 2009 | 06:57 AM
  #7  
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From: MA
Car: '87 IROC/'68 SS
Engine: 5.7L/350
Transmission: 700R4/Muncie 4-spd
Axle/Gears: 3.27 9 bolt / 3.31 12 bolt
Re: Ignition Module

Originally Posted by GadeXTrigger
ok how do i change the pickup coil?
and the heat sink compound?
suck it stinks being a newb lol
Take the dist out. Drive the rollpin out of the gear and remove it. Pull the shaft out of the dist. The rest is obvious. The new module should some with compound to put under it.
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Old May 9, 2009 | 07:38 AM
  #8  
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From: Eglin AFB/Hurlburt Field
Car: 91 Z28
Engine: 350 TPI
Transmission: Stock
Axle/Gears: Stock
Re: Ignition Module

Posing to do the same thing shortly, let us know how it went and if it fixed it......

Jay B
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Old May 9, 2009 | 10:33 AM
  #9  
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From: North Charleston
Car: 91 Camaro
Engine: 5.7Fl V8 350 tpi
Transmission: 700R4 Automatic
Re: Ignition Module

ok i got the dist sitting right next to me but im totally stumped on how to switch it i do not understand your directions jv9999 please break it down more plox
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Old May 9, 2009 | 04:41 PM
  #10  
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From: GTA Canada
Car: 1991 Z28
Engine: 5.7L 350
Re: Ignition Module

Here is a great write-up with pics that helped me out in a similar situation.


http://syty.net/forums/showthread.ph...382#post573382
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Old May 10, 2009 | 07:23 PM
  #11  
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From: North Charleston
Car: 91 Camaro
Engine: 5.7Fl V8 350 tpi
Transmission: 700R4 Automatic
Re: Ignition Module

OKAY major fail on my part. I get the pick up coil on there no problems you know and i get everything ready to put back on and then i dont know the way the spark plugs get plugged in :*( so please if anyone knows the order please tell me
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Old May 10, 2009 | 09:25 PM
  #12  
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From: MA
Car: '87 IROC/'68 SS
Engine: 5.7L/350
Transmission: 700R4/Muncie 4-spd
Axle/Gears: 3.27 9 bolt / 3.31 12 bolt
Re: Ignition Module

Originally Posted by GadeXTrigger
OKAY major fail on my part. I get the pick up coil on there no problems you know and i get everything ready to put back on and then i dont know the way the spark plugs get plugged in :*( so please if anyone knows the order please tell me
1-8-4-3-6-5-7-2 CW

Last edited by jv9999; May 10, 2009 at 09:28 PM.
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Old May 12, 2009 | 11:55 AM
  #13  
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From: North Charleston
Car: 91 Camaro
Engine: 5.7Fl V8 350 tpi
Transmission: 700R4 Automatic
Re: Ignition Module

I am now missing wires. one of the wires that plugs into the Ignition coil is like totally destroyed and then there a wire that goes into another part under the ignition coil that is missing a wire totally and then lastly two vaccum pipes just kinda fell out of under the header/ Dist area....any help on where to find/fix these wires?
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