Delco Gemini, head scratching ahoy

vlt304 · Post by **vlt304** » Mon Jan 26, 2015 10:00 pm

I am in Brisbane if you want it programmed on the north side

Javi · Post by **Javi** » Thu Feb 05, 2015 8:46 pm

Thank you to vlt304, my NVRAM is working now!

Now I've got a problem. My TPS in 'inverted'. That is to say, when my throttle is closed it's reading 100% in TP5, and when I'm at WOT it's reading 0%. Is there any way to fix this? It was working with my other TPS, but I changed plenum and TB because the old one was a bit big for my application.

vlt304 · Post by **vlt304** » Thu Feb 05, 2015 8:59 pm

ecotec tps is inverted compared to a buick 1

Javi · Post by **Javi** » Thu Feb 05, 2015 9:00 pm

Okay, but is there a way I can make it work? It's got the full range, just backward...

Post by **vlad01** » Thu Feb 05, 2015 9:06 pm

vlt304 wrote:ecotec tps is inverted compared to a buick 1

mechanically yes, but electrically should be the same. Pinout was the same one when I checked it on my custom harness.

in case it is, just unpin the 5V and output and swap them around leaving round as is?

Javi · Post by **Javi** » Thu Feb 05, 2015 9:10 pm

vlad01 wrote:
vlt304 wrote:ecotec tps is inverted compared to a buick 1

mechanically yes, but electrically should be the same. Pinout was the same one when I checked it on my custom harness.

in case it is, just unpin the 5V and output and swap them around leaving round as is?

Is the 5V the red wire on it? Sorry, I don't know exactly what TPS this is, but it's off a Rodeo and has a second plug, which is the plug with the linear output.

Post by **antus** » Thu Feb 05, 2015 9:17 pm

Ive just seen this thread. Im glad that programmer worked, the dallas 1245 nvram isnt listed in the supported chips. Did you need to pick another chip when you programmed it, or did it actually list the correct chip in the software once you got it?

Yes, for swapping polarity. Swap the blackest wire and the most red wire. Or if still not clear advise what colors you have.

Ive just had a report of an nvram arriving in Canada dead, so like the others, working when left here... I also suspect X-Rays but I dont know for sure. Its most certainly worth having an eprom programmer, you tend to need it sooner or later for something you want or need to do in this hobby.

Javi · Post by **Javi** » Thu Feb 05, 2015 9:18 pm

I haven't actually recieved my programmer yet! Vlt304 was kind enough to do it for me.

I'll go try that and report back with results!

EDIT: Success! TPS reads properly now. For those who are interested, I think it's an auto Rodeo TPS, as it seems somewhat similar to an auto TPS antus had.

Post by **Holden202T** » Sat Feb 07, 2015 3:09 pm

do you send the nvrams in anti-static bags antus ? just a thought.

Post by **Jayme** » Sat Feb 07, 2015 5:58 pm

Lead lined box required for posting haha

Delco Gemini, head scratching ahoy

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