ms2 v3 no rpm

The forum to discuss:
- V2.2, V3 assembly,
- V2.2, V3 troubleshooting, and
- Connection troubleshooting
Forum rules
Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.

If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).

If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days

The full forum rules are here: Forum Rules, be sure to read them all regularly.
Post Reply
84tpivette
MegaSquirt Newbie
Posts: 14
Joined: Sat Nov 09, 2013 10:14 pm

ms2 v3 no rpm

Post by 84tpivette »

running ms2 v3 board sbc 350 TPI injection wired up to specs.board set up to hei. dont get any rpm during cranking and tunerstudio goes off line. dist is in at 10 btdc rotor line up with tower and the vr is lined up. But i get spark to plugs when its turning over but dont see it in TS. what will it take to do fuel only. i a have vac advance 4 pin hei dist i can put back in car. i know it works cause used on carb setup
1984 Corvette TPI(no longer cease fire) ms2 v3 in the works
84tpivette
MegaSquirt Newbie
Posts: 14
Joined: Sat Nov 09, 2013 10:14 pm

Re: ms2 v3 no rpm

Post by 84tpivette »

Board is soldered like the following
D1 jumped
D2 jumped
XG1 jumped to XG2
OPTOUT jumped to TSEL
S12C jumped to JS9(+12c) for IAC
JS10 jumped to IGN
TACHSELECT jumped to OPTOIN
no C30 or C12
1984 Corvette TPI(no longer cease fire) ms2 v3 in the works
Matt Cramer
Super Squirter
Posts: 2951
Joined: Sat Jul 03, 2004 11:35 am

Re: ms2 v3 no rpm

Post by Matt Cramer »

Does it get RPM correctly on a Stim?

Any chance the 12 volt power is from a source that's hot in Start but not Run?
84tpivette
MegaSquirt Newbie
Posts: 14
Joined: Sat Nov 09, 2013 10:14 pm

Re: ms2 v3 no rpm

Post by 84tpivette »

No on the stim did the same turn the rpm knob and made ecu go offline. Power is on to ecu in all key locations. If I unplug in input pin #24 and the spark output A ecu don't go offline
1984 Corvette TPI(no longer cease fire) ms2 v3 in the works
84tpivette
MegaSquirt Newbie
Posts: 14
Joined: Sat Nov 09, 2013 10:14 pm

Re: ms2 v3 no rpm

Post by 84tpivette »

Going to add the following mods to see if help

V3.0 board

http://www.msextra.com/doc/ms2extra/MS2 ... htm#wiring
1984 Corvette TPI(no longer cease fire) ms2 v3 in the works
Post Reply