98 computer problems

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Dec 11, 2006 | 03:51 PM

dedge

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98 computer problems

I have had it with my 98s CPU and I need to know how to convert a 98Z28 to a later model CPU. Do I need to buy an aftermarket wiring harness? Or do I just need to set down and figure out the pin outs and modify them? Whatever would be the easiest way to do this.

Dec 11, 2006 | 04:02 PM

datboibrad

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repin the 98 harness to the 99 ecu pinout and swap to a 99+ coolant temp sensor. plug the repinned harness to the 99+ pcm and call it a day. the FAQ sticky has a several spreadsheets on how to do this.

Dec 11, 2006 | 04:15 PM

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Quote:

Originally Posted by datboibrad

The problem I'm having is with the CPUs control of the 4l60E's shift points. Is a 99 computer going to be fast enough?

Dec 11, 2006 | 04:23 PM

bczee

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Yes.. it should be as the 99+ are the same for M6 or A4's.. just pin'd and wired for the A4.

Also the Alternator is different. 98 uses Idiot light setup and 99+ uses PCM to excite the Alternator (not sure what is needed to change since I have a 99, but the FAQ and Sticky out line it). Carefull, if not done correctly, will blow the Alternator and you will have to replace.

Dec 11, 2006 | 10:13 PM

jsconiers

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Uhm.....Can you point me to the sticky....I went to the PCM tuning section and didn't see it.....I have a 98 LS1 and might want to use a 99 PCM as well....seems they are cheaper / more available...for some reason...

Dec 11, 2006 | 11:08 PM

bczee

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The Sticky or FAQ is at the top/start of the section, along with other threads.

https://ls1tech.com/forums/conversions-swaps/312119-ls1-swap-faqs.html

Dec 11, 2006 | 11:08 PM

dnm12

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can i see one of these sticky's and spreadsheats I have been looking as well and cannot find them

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Dec 12, 2006 | 09:41 AM

bczee

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The Sticky/FAQ are at the top of the "Conversions & Hybrids" Forum (or any of the forums if there are some) and are in Yellow. Open the Thread and then if there is a link (as there is for the PIN out of the PCM's) and follow the link(s).

What specify information are you looking for ? Pin out for the 98 vs 99 ? or are you looking for step by step information on what/how to do something? The information may or may not be in these Sticky/FAQ but are generally a good starting point to research or follow other threads/links.