944Hybrids: 924/944/968 and 928 V8 Conversions
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HOW TO DO AN ADVANCED SEARCH.

Mon Jul 08, 2013 3:56 pm by Admin


For the benefit of 944Hybrids users there are two search functions available for you to use.
The purpose of this sticky is to explain the "Advanced Search" function because it is much more powerful and is the best choice when researching information.

When you log on to the site a list of options is shown in a line at the top of the page. One option is labelled "Search", use this option (NOT the search box lower down on the right).

After you click on the upper search option, a drop down box appears. At the bottom of this box is a radio button marked "Advanced …

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Tachometer Issues

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Tachometer Issues Empty Tachometer Issues

Post  superman22x Mon Apr 09, 2018 7:20 pm

I am struggling to get my tachometer to work with my LS3. I have swapped to a late interior in my car, and I believe everything is wired properly. I ran a new wire for the tach signal and have it wired directly into the instrument panel connector 2. I tested this wire, and the 12V input for the Tach with an aftermarket unit, and it reads just fine. But the Porsche tach will not budge. I am using a 1k ohm resistor as a 12V pull-up resistor. What has everyone else done for wiring the tach? Is this resistor too large?

Thanks!

superman22x

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Post  sharkey Mon Apr 09, 2018 10:13 pm

has the tach output been turned on in the ecm? some cars run the tach signal through the data bus and as a result the tach output isnt enabled and needs to be turned on with a tuning program.

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Post  superman22x Tue Apr 10, 2018 8:09 pm

Yeah, I did double check that, good there.

I put in a different resistor (480ohm) between the 12V pin and signal pin on the back of the tach, and it worked now... I guess it just needs a stronger signal. The GM performance parts instructions just recommend a 5,000 Ohm resistor. Oh well, I think it is good now... The other two Porsche tachs I had must have actually been bad. Guess the Porsche tachs are a little sensitive?

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Post  948 Sat Apr 14, 2018 4:15 pm

I used the Dakota Digital signal converter. Simple and accurate. The cost is small, in the grand scheme of things.
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Post  superman22x Wed Apr 18, 2018 9:20 pm

948 wrote:I used the Dakota Digital signal converter. Simple and accurate.  The cost is small, in the grand scheme of things.

Both the LS and Porsche use a 4 cylinder signal, I guess I'm not sure what the Dakota signal converter does other than add 12V pullup to the LS signal.

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Post  948 Wed Apr 18, 2018 10:22 pm

LOL, don't mind me. I have an LT1, totally forgot that the LS is a 4 cylinder pluse. LT is an 8 cylinder pluse.
superman22x wrote:
948 wrote:I used the Dakota Digital signal converter. Simple and accurate.  The cost is small, in the grand scheme of things.

Both the LS and Porsche use a 4 cylinder signal, I guess I'm not sure what the Dakota signal converter does other than add 12V pullup to the LS signal.  
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