Megasquirt searched lost sync reason 17 help
08-25-15, 10:49 PM
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searched lost sync reason 17 help
so im turing my car seams ok but now and then i get lost sync 17 last short data log i got 9. i can hear the engine pinging now and then as well but i think that might be due to being to rich (working on that)
is that sync code due to lost of cas signal? i have used the stock cas, i started out not ground the shielding wire to the squirt but i did today and no change. swapped out alternators same thing. could the positive wire of the alt case noise as its close to the cas? should i shield it with some Bx sheeting (seams to block out lots of EMI lol) heres my data log in get a composite log tomorrow
is that sync code due to lost of cas signal? i have used the stock cas, i started out not ground the shielding wire to the squirt but i did today and no change. swapped out alternators same thing. could the positive wire of the alt case noise as its close to the cas? should i shield it with some Bx sheeting (seams to block out lots of EMI lol) heres my data log in get a composite log tomorrow
08-29-15, 10:26 AM
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17 is second trigger missing when expected.
Yay for memory of obscure things!
Posts adjusted?
CAS tooth gap tight?
CAS wire shield grounded well only at ECU end?
Yay for memory of obscure things!
Posts adjusted?
CAS tooth gap tight?
CAS wire shield grounded well only at ECU end?
08-30-15, 09:04 PM
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CAS wire shield grounded well only at ECU end?
yes wire is shield is grounded to the ecu only.
under trigger wheel settings i have tooth #1 angle deg set for 5.0 ur setting page shows that as zero... could be my problem??
Posts adjusted?( il crack open the squirt and have a look should be as i have not opened up the box since my fb was running but who knows what gremlins do on there spare time)
yes wire is shield is grounded to the ecu only.
under trigger wheel settings i have tooth #1 angle deg set for 5.0 ur setting page shows that as zero... could be my problem??
Posts adjusted?( il crack open the squirt and have a look should be as i have not opened up the box since my fb was running but who knows what gremlins do on there spare time)
08-31-15, 06:56 AM
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MegaSquirt Mod
CAS wire shield grounded well only at ECU end? yes wire is shield is grounded to the ecu only. under trigger wheel settings i have tooth #1 angle deg set for 5.0 ur setting page shows that as zero... could be my problem?? Posts adjusted?( il crack open the squirt and have a look should be as i have not opened up the box since my fb was running but who knows what gremlins do on there spare time)
Typically this is caused by bad grounds, bad shielding, or mechainical problems.
08-31-15, 07:07 PM
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i did use the some of the stock shielding cable with stock connection, back to the squirt then i taped my new section of shielded wire on it... could be there il see if i can make my new wire reach and make my old cas work with push on connectors. thanks guys
08-31-15, 11:12 PM
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ok cut the stock shielding cable from the new one. installed it to a proper cas connector. soldered all connected routed wire away from any source of noise like alt or motors as much as i could. went for a drive seamed ok but once sync lost started they keep happening once after an other.
got home car stalled and would not fire. seamed like timing was off. i compared the gap in the cas pickups, and my old cas i had been using for my FB TII setup had less gap. so i swapped out an other cas pickup feller gauged the gap like my old cas was and re stabbed this cas car fire up. il try once more after work il let you guys know thanks
got home car stalled and would not fire. seamed like timing was off. i compared the gap in the cas pickups, and my old cas i had been using for my FB TII setup had less gap. so i swapped out an other cas pickup feller gauged the gap like my old cas was and re stabbed this cas car fire up. il try once more after work il let you guys know thanks
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09-01-15, 11:15 PM
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Ok took the car for a drive. same problem seams like the car runs much smoother now but im still losing sync 17. the noise filter map. how do i use that the higher up i go in the map the more filter it adds? if this will even fix my problem. i remember a when i first squirted my fb we had to add some noise filter as the car was fueling the turbo and id hit instant 20psi boost but car was not moving that fast lol.
il double check the grounding to the ecu once more, when i installed the good shielding wire i extended some of the shielding up the the connector to shield as much as i can. here is a composite log as well at point 14 you can see the lost of sync. also notice the "blue" logs sign wave i guess they are. have some bigger gaps now and then. must be from the noise
i have to fix this problem before i blow this bad girl up. i think the only thing keeping it from going south is the Ra supper seals. housing might be toast tho.
il double check the grounding to the ecu once more, when i installed the good shielding wire i extended some of the shielding up the the connector to shield as much as i can. here is a composite log as well at point 14 you can see the lost of sync. also notice the "blue" logs sign wave i guess they are. have some bigger gaps now and then. must be from the noise
i have to fix this problem before i blow this bad girl up. i think the only thing keeping it from going south is the Ra supper seals. housing might be toast tho.
09-02-15, 06:57 AM
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MegaSquirt Mod
Ok took the car for a drive. same problem seams like the car runs much smoother now but im still losing sync 17. the noise filter map. how do i use that the higher up i go in the map the more filter it adds? if this will even fix my problem. i remember a when i first squirted my fb we had to add some noise filter as the car was fueling the turbo and id hit instant 20psi boost but car was not moving that fast lol. il double check the grounding to the ecu once more, when i installed the good shielding wire i extended some of the shielding up the the connector to shield as much as i can. here is a composite log as well at point 14 you can see the lost of sync. also notice the "blue" logs sign wave i guess they are. have some bigger gaps now and then. must be from the noise i have to fix this problem before i blow this bad girl up. i think the only thing keeping it from going south is the Ra supper seals. housing might be toast tho.
09-02-15, 08:07 PM
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i doubled checked i removed the squirt cable and opened it up. its grounded to the same ground as the squirts shielding wire. i did find some soldered wires that were exposed and could have came in contact with the shielding as the shrink wrapping shrunk with time.... so i fixed that up went for a dive. now i get lost sync 17 on start up using falling edge settings, swaped both to raising edge and its better. but still get sync lost. i have yet to look at the post mind you. i turn them ccw? then just turn back a tad? i forgot how to do this part>?
also using the noise filter settings will going up on the map make it filter more noise ? or the lower i got will reduce noise?
can a squeaking alternator belt cause odd noise lol im at a loss here haha.
also using the noise filter settings will going up on the map make it filter more noise ? or the lower i got will reduce noise?
can a squeaking alternator belt cause odd noise lol im at a loss here haha.
09-03-15, 06:08 AM
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i doubled checked i removed the squirt cable and opened it up. its grounded to the same ground as the squirts shielding wire. i did find some soldered wires that were exposed and could have came in contact with the shielding as the shrink wrapping shrunk with time.... so i fixed that up went for a dive. now i get lost sync 17 on start up using falling edge settings, swaped both to raising edge and its better. but still get sync lost. i have yet to look at the post mind you. i turn them ccw? then just turn back a tad? i forgot how to do this part>? also using the noise filter settings will going up on the map make it filter more noise ? or the lower i got will reduce noise? can a squeaking alternator belt cause odd noise lol im at a loss here haha.
09-04-15, 08:29 PM
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09-05-15, 07:55 AM
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09-07-15, 07:25 PM
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i just came back form a weekend way. took an other look. i had the ground at the fire when i first installed the squirt. but i have moved it back to the rear iron. and thats where it is now. but with the painted block... i might not have a good ground il take some sand cloth to the block and ground and il see if can get a better connection. thanks
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