Problem With Microtech

[mad082]

ok i'm posting this up for a mate.

he has just wired a microtech (not sure on number but it is a LT, not LTX) into his ceffy (turbo rb25) and isn't getting spark... sort of. when it does all the self test it comes up fine. now i'll start the story from the start....

when he first bought it it was wired up for wasted spark but when he hooked it up it fried the drivers in the ecu. so he sent it away to microtech and got it fixed and was supposedly bench tested and worked fine. he has now got it back and wired up for normal spark. when he uses th stock s2 coils he gets no spark. when he uses rb20 coils with an ignitor he gets no spark, but when he uses rb20 coils and no ignitor he gets spark (he only has 1 rb20 coil though). he has gone over the wiring with a multimeter and test light and everything is getting enough voltage to fire but it won't. anyone got any ideas on why it won't run with the s2 coils. he was under the impression that the LTX had a built in ignitor but the LT didn't.

pretty much been over everything we could think of so throw out any ideas you have

[mad082]

ok just double checked the model number. it's a LT12S. he also rang up a tuning company this morning to double check the compatiability of using the stock coils and they agreed it should work fine.

he has wired up and tuned a few microtechs in the past so it isn't a lack of knowledge issue.

[The Dan]

ok just double checked the model number. it's a LT12S. he also rang up a tuning company this morning to double check the compatiability of using the stock coils and they agreed it should work fine.

he has wired up and tuned a few microtechs in the past so it isn't a lack of knowledge issue.

RB20 (S1 33 coils) and S2 33 coils are wired differently.

Can you please post up a MSPAINT wiring diagram of how they are wired ie. which wires (colours or output numbers from ECU) are going to which wires on the coilpack

[mad082]

ummm, i will go and have a look tonight and find out. but i think he may have tried swapping them around. but would that explain why the rb20 coil will fire without an ignitor and not with an ignitor?

[FAT_3L]

dude jump on microtechefi.com and get in contact with RX ENG. his name is jon, he will sort u out, def knows his stuff when it comes to these computers.

[mad082]

yeah he has emailed microtechefi.com (and not microtech-efi.com which is actually mazfix which i think was who fixed the board last time) and has sent the ecu away to them. they suspect the ecu may have had a LTX board put in it and not had the sticker changed when it was fixed last time because of the fact that it will spark without an ignitor but not with an ignitor.

[FAT_3L]

yeah jon is good, quick getting the comp back to. sounds like he will sort u out. good luck