Joined: Apr 2018

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Ive been looking for an answer every where but I can’t seem to find someone with the same issue I’m having. I have a fully built sleeved LS-VTec set up and a OBD2a EK. My Injectors are SFI Bosch 2200cc and they all ohm out to 9.4ohms. I don’t have a resistor box in the system because they are supposedly saturated injectors. The issues I’m have is the car will turn on and idle fine for 1 - 2 minutes and slow and progressive it starts to misfire. More and more it’s starts to misfire until it idles so rough that it wants to die and by that time it is at operating temps. I had the more time check and it was dead in time with my obd1 dizzy jumper adaptor to my Obd2a harness. I switch to a Obd2a dizzy and it does the same thing. I check continuity from the injector grounds to the ecu and all have zero resistance as well as 12v in the 2nd key position. I’m starting to think my ecu is bad and my injector drivers are fried. Is there anything else I can test and did any one have this same issue with a solution? Below I’m posting a data log from when my car would progressively





INJ ms is very wavy and rpm and Ing degree is fluctuating

Joined: Apr 2018

Posts: 12

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Any1?? Help

Joined: Mar 2005

Posts: 2,428

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From: CT, US

Joined: Apr 2018

Posts: 12

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Thank you for replying but I tested the injectors all good. I now realized when I have it more fuel turn in hondata it idled alittle longer but still wanted to die when the rpm drops when warmed up. I’m gonna try to throw alittle more fuel to compensation for the rpm decrease at warm up but idk. I have no idea about tuning anything but I try. I guess I’ll try to set up another dyno appointment. I doubt it anything mechanical tho either this is a great rebuild for block. The head was used but it was resurfaced and the valves reseated and valve lash was done before full assembly. I’m open to more testing or ideas tho.

Joined: Mar 2005

Posts: 2,428

Likes: 11

From: CT, US

Joined: Apr 2018

Posts: 12

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Yeah I got one. Turns out after replacing my ecu and wiring my Injectors connectors directly into my harness instead of using adaptors I turn still had the issue but it ran alittle better. I added more fuel at my idle rpm which is around 1k and it idles fine now. It like to be in the 13.2 range rather than 14.7 maybe of e85 but it’s a lot better than it was.