i have a car at the shop that i cant get started this problem is not an issue with the s300 because it has the same symtoms with a stock ecu. when i make a log while cranking i get and iat.c reading of -100% and this is causing the injectors to stay closed. i have tryed everything i can think of and it is really bothering me... any input would be great. i can also provide any info that you would need to help me diagnose this issue.

 

Bump... Nobody has seen this before?

 

What temperature is your intake air temperature sensor reading with the key on and engine off?

Is the vehicle throwing any codes with the key on engine off?

 

no codes both sensors read correctly ect is roughly 50* and so is iat. it is about 50 * in the shop, when i unplug the iat it reads 123 but I have the tables zeroed out so it shouldnt be correcting anything. i assume the iat.c -100% is killing the injectors as i can add whatever to the overall trim and cranking trim and the duty cyle while cranking stays at 1%.

 

im trying to upload the log and cal but it says invalid file type i can email them to you though.

 

If it is -100%, you would not be getting injector pulse. This happens with almost every s300 I use, it is not your issue. In the first post, you said the problem is with the stock ECU too. It sounds like you are having another issue.

 

exactly im not getting injector pulse

 

it is an issue with the car i worded my post like i did because im using the s300 to diagnose

 

Make sure you are running the latest smanager from hondata.com's download section.
Try uploading a stock p28 calibration via the smanager to see what occurs.

 

Yes, you are. If you are not getting injector pulse, your duty cycle would be zero.

As john said, make sure you have the most recent version of Smanager. If not, call hondata. You only need 3 things to have the car start if the motor/injectors are healthy. Good distributor, good wiring, and good ECU. It is not like you are figuring out the trigger angles.

You can always email me a file, email is (myscreenname)@gmail.com