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Discussion Starter · #1 ·
ORIGNALLY POSTED IN POWER ADDER FORUM:

I recently finished my Vortech installation on my 2004 Z06.

The install included a the stock Vortech components, Kooks 1-7/8" headers, and a Vararam intake system. :jammin:

Overall all, the install went well with the exception of the PCM throwing a couple of codes.

The first and most bothersome is the P1637 relating to the Generator L-circuit. This is the one I need some help with.

I have browsed the previous threads on this and rechecked the installation, accordingly.

As of now, I have verified the continuity and ohm readings to be 0.8 ohms between the generator connector and the PCM connector. So, it appears that I don't have a bad connection.

Battery was fully charged, so I doubt it is an issue.

However, according to the service manual, I should be able to disconnect the generator conn., start the engine and read 5V from the PCM. Here is were it got interesting.

Instead of the expected 5V, I got a reading of approx. 10.8V with the ignition on (engine NOT running) and a fluctuating voltage (not to be confused with AC) that my Digital Volt Meter couldn't stabilize (with the engine running).

So, I thought maybe my PCM is bad OR maybe the Vortech program (via Superchips) may have caused the problem. :screwy:

I hooked up the Superchips programmer and reprogrammed my PCM back to stock (so I thought). I then went to reflash the PCM with my "back up copy" of the PCM that I had made with my HP Tuner program prior to any mod's.

What I discovered was upsetting. The Superchips programmer changed my OS and didn't return it to stock. So now I cannot reload my "back up copy" that I made with my HP Tuner program.

This makes me suspect that Superchips changed my OS which might be causing this P1637 error. :mah:

Anyhow, this is as far as I got today. I hope someone else that has some experience with the Vortech, and maybe even the 2004 Z06, might be able to help.

As always, thanks to all the members that contribute to this forum.

Viper1
 

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Discussion Starter · #4 ·
Well, after a whole lot of hassle, I finally got this fixed! :D

The P1637 code that my PCM was throwing did NOT have anything to do with the flash program that SuperChips provided.

As it turned out, one of the (3) wires that attach the alternator stator to the rectifier/voltage regulator loosened up causing a voltage spike that damaged my PCM! :mad:

The pisser of the whole thing is that these (3) connections are supposed to be crimped AND soldered, but not on my alternator ... Oh no ... that would have been too much to expect!!!

As for the wiring, absolutely no problems whatsoever!

Just dumn luck that the problem would happen during the Vortech install.

Anyhow, just wanted to share with the rest of members what came of this situation.

For my 2 cents, if you happen to have the alternator off for any reason, it wouldn't hurt to take-off the plastic shield on the back of the alternator and inspect the connections for a proper crimp and solder. It could same you some major cash!

The alternator retails for $510.00 and I was afraid to ask what the cost was on the PCM. Lucky for me, I was able to get this fixed under warranty. :yeadog:
 

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So how's it run since you got everything fixed?
 

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Discussion Starter · #6 ·
She's running great now.

If I knew she would be this much fun to drive (blown), I would have got the install done last summer when I originally purchased the parts!

For me, there is no looking back.

Now, if only I had a C5R block ... hmmm. :D
 

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Hey Viper1...your id says Electron Blue....for 04 ?? is that 03 or really Lemans Blue ? :z:
 

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Discussion Starter · #8 ·
Oops, I would say that I meant "ebony" as in black.

Sorry for the confusion, I'm not the best on abbreviation. :blush:


Thanks for the heads-up. :cheers:
 
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