IHADAV8.com - Turbo Buick Tech, and Nonsense
Tech Area => General Buick Tech => Topic started by: Scoobum on July 28 2016, 07:28:53 PM
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Please tell me this is the problem...just noticed it swapping it in.
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The epoxy is breaking down.
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That would be my guess.
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I went with the other Delco unit I have here. I'm bringing along another aftermarket unit to try as well.
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Doesn't Dan have one you can try?
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Steve i have a Type II ignition.
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I don't like that the wire looks like something was pressing on it and right in that area it look like little deposits of metal or metal breaking thu the encapsulement?
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Looks to me that the gasket has failed as well as the epoxy starting to break down.
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If you've ever seen the insides of a module without the potting material its just a circuit board similar to the insides of a transistor radio. The potting material is there to protect the electronic components. A crack in the potting material alone should not be a problem UNLESS the crack is letting moisture get to the board, which to me looks to be a little damp. Or the board or soldered joint is somehow cracked and is telegraphing through the potting material.
daveismissing brought up a great point about the kinked wire and what looks like metal breaking the surface of the potting material. Any metal to metal contact there would certainly be a problem. Normally you would see evidence of arcing on the potting material.
Heat is the number one cause of module failure. If its a heat related issue the potting material usually tends to get tackey.
Nevertheless, I'm glad you found the problem Brad. Look me up if you ever get down this way :cheers:
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to add to what he said, we also know that the module can short out when the terminal blade is bent such that it gets pushed into the potting compound when the pack is assembled and it kinda looks like it might be close to doing that at the funny looking wire :)
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Always wondered what was under the potting material...tha nks. Next question I have is this. So what's the difference between the NA module that's in the car now...and it's turbo counterpart?
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I'm starting to wonder about this as well. The type II coil/CCCI we use come out of normally aspirated- do they not?
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I thought there were some on centuries and some of those body style in olds Ciera maybe
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http://www.gnttype.org/techarea/ignition/type2coils.html (http://www.gnttype.org/techarea/ignition/type2coils.html)
:)
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One thing we know is that the turbo module is the only module that will work with the caspers coil tester. The others do not fire at all when connected to the tester
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Why do I get stuck track testing all this junk. :) :rock: :cheers:
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My suspicion is that the NA parts may work out OK too.
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Testing in race conditions next weekend. :)
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The NA module lasted till tonite. Same shit. Fell on it's face in high gear.
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Time for another option: https://www.google.ca/search?safe=off&site=&source=hp&q=megasquirt+wasted+spark+cop+buick&oq=megasquirt+wasted+spark+cop+buick&gs_l=hp.3...35247.46134.0.46459.28.27.0.0.0.0.315.3945.0j7j10j1.18.0....0...1.1.64.hp..10.17.3645.0..0j0i131k1j0i10k1j0i22i30k1j33i21k1.O9LL3t0rxWo (https://www.google.ca/search?safe=off&site=&source=hp&q=megasquirt+wasted+spark+cop+buick&oq=megasquirt+wasted+spark+cop+buick&gs_l=hp.3...35247.46134.0.46459.28.27.0.0.0.0.315.3945.0j7j10j1.18.0....0...1.1.64.hp..10.17.3645.0..0j0i131k1j0i10k1j0i22i30k1j33i21k1.O9LL3t0rxWo)
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Napa brand...165 bucks...done.
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Are you using a volt booster?
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Are you using a volt booster?
Yes sir. Caspers V Plus...and it's working. You can see it jump 2.1 volts at WOT on PL. It's crossed my mind too.
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My theory is the NA modules can't handle the extra load from our boosted engines. Got home from work too late today to get a correct module from NAPA here in town. I'll get one Monday morning. I have another NA one here that Steve deciphered to be from a NA 1989 Ciera. Wonder if I should swap it in and make it puke...just to prove my theory. I could swap the correct one in at the track when I nuke it.
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What about a module from the supercharged 3800's? I don't know the years or models maybe someone else knows
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I suspect the volt booster shortens the life of them. Anyone remember which mfg didn't have the tach lead working?
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I suspect the volt booster shortens the life of them. Anyone remember which mfg didn't have the tach lead working?
Reading tells me the VDO tach won't work with them. I have a an Autometer. John Spina has a writeup on the other board how to wire the aftermarket module to work with an external tach.
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Seems we are down to the Delco, the BWD/Wells part (via NAPA?) or the Standard Auto LX338T.
+Whoever "True-Tech" are- they use the same part numbers as Standard.
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BWD can be had through Parts Source...which I think is an arm of Canadian Tire.
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Wells often has a very bad reputation for this kinda stuff. I would stick to Delco or Standard, myself
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Wells often has a very bad reputation for this kinda stuff. I would stick to Delco or Standard, myself
^^^ This. AC Delco 24503624 module is what you need. Works very well.
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The AC is triple the price up here.
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The AC is triple the price up here.
And that is if you know someone! :(
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The AC is triple the price up here.
I see... Well if you get desperate let me know. I got a couple extra here.
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Thanks so much!
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I talked to Julio from Razors alky a while back when he called about some oil pump info. He told me that he buys the $19 ECMs off Ebay and has perfect success with them. Only 'issue' is that aftermarket tachs don't work all of the time.
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Neither does Caspers coil tester