Flex fuel sensor works on JS11, but not JS7

someguy2800 · Post by **someguy2800** » Wed Apr 13, 2016 1:03 am

Hi there,

I just added a late model GM flex fuel sensor to my MS2 V3.0. I am running 3.4 firmware. It is a continental sensor from a late model malibu. Anyway I wired it accoring to the manual with a 10K pullup resistor to v5, and a 10k resistor to the ECU pin. The problem however is that I get no input from the sensor in tuner studio when I have the sensor hooked up to JS7 and that input selected. If I change to JS11 and select that pin in tuner studio it works fine. Any idea what the problem could be here? I have two spare ms2 daughter cards on hand and tried them both with no luck. Problem is I want to use JS11 for boost control and I'm already using all the other available outputs.

Post by **jsmcortina** » Wed Apr 13, 2016 1:09 am

Have you modified the MS2 card as necessary to use JS7 ?

James

someguy2800 · Post by **someguy2800** » Wed Apr 13, 2016 1:17 am

no I wasn't aware any modification was needed. I just did some searching and couldn't find any info on that. Can you point me to where I might find it?

I really appreciate your help!

someguy2800 · Post by **someguy2800** » Wed Apr 13, 2016 1:20 am

nevermind, I just found it in the old ms2 manual. Thank you very much, I will give this a try!

http://www.msextra.com/doc/ms2extra/MS2 ... ms2options

Post by **jsmcortina** » Wed Apr 13, 2016 1:28 am

No need for obsolete manuals.
http://www.msextra.com/doc/pdf/html/MS2 ... .4-30.html

James

someguy2800 · Post by **someguy2800** » Wed Apr 13, 2016 1:50 am

Dang, I looked at the flex fuel page 15 times but didn't click to the next page to see that. I just installed the jumper and its working now, thank you for your help!

Post by **jsmcortina** » Wed Apr 13, 2016 2:13 am

Easily done it seems. It's best to download the PDF versions.

James

neongreen · Post by **neongreen** » Sun May 21, 2017 4:04 pm

Is the yellow wire (as shown in the manual) also necessary, or just the green wire? The manual isn't terribly clear on this point.

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Flex fuel sensor works on JS11, but not JS7

Flex fuel sensor works on JS11, but not JS7

Re: Flex fuel sensor works on JS11, but not JS7

Re: Flex fuel sensor works on JS11, but not JS7

Re: Flex fuel sensor works on JS11, but not JS7

Re: Flex fuel sensor works on JS11, but not JS7

Re: Flex fuel sensor works on JS11, but not JS7

Re: Flex fuel sensor works on JS11, but not JS7

Re: Flex fuel sensor works on JS11, but not JS7