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AUTO TO MANUAL ECU WONT START!! HELP

 
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Old 01-26-2015, 08:19 PM
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Icon5 AUTO TO MANUAL ECU WONT START!! HELP

OK, I WILL TRY TO PROVIDE AS MUCH INFO AS I CAN.

I RECENTLY HAD MY 1998 HONDA PRELUDE SWAPPED FROM AN AUTOMATIC TO A MANUAL.

DONE WITH AUTO ECU ( YES YES, I PLACED THE GEAR INDICATOR IN PARK SO IT WOULD START.

RUNS FINE AND CRANKS RIGHT UP WITH AUTO ECU IN IT.

BUT!!! IT HAS A LACK OF POWER AND....

NO VTECH AND A REV LIMITER AT AROUND 5-5500K RPMS.

SOOOO......I CALLED JDM OF ORLANDO FL AND THEY TOLD ME TO SWAP THE ECU FROM THE AUTO TO MANUAL ECU IN ORDER TO ELEMINATE THE REV LIMITER, AND TRANSMISSION CODES ALONG WITH THE NEED FOR THE PARK SENSOR. THEY TOLD ME I COULD USE THE AUTO WIREING HARNESS AND THAT IT WOULD JUST PLUG RIGHT IN AND CRANK RIGHT UP.


WELL THAT DOES NOT SEEM TO BE THE CASE. I ORDERED A NEW MANUAL ECU FOR AN EXACT FIT. OBD2 AND ALL. ECU NUMBER IS -37820-P5M-L03, AND THE LOWER LINE IS 092-205656.

I PLUG IN THE MANUAL ECU AND THE ENGINE TURNS OVER, THE FUEL PUMP SEEMS TO BE RUNNING( I CAN HEAR IT) AND IT WILL TURN OVER AS LONG AS YOU HOLD THE KEY FORWARD.

NO ENGINE CODES WITH MANUAL ECU, NO CHECK ENGINE LIGHT.

MY MAIN QUESTION I GUESS IS... IS THERE SOME SORT OF PINOUT OR JUMPER WIRE I NEED TO INSTALL ON THE ECU HARNESS CONECTORS, OR SOMETHING.

I HAVE BEEN READING FORUMS ALL DAY WITH NO ANSWERS.

PLEASE FEEL FREE TO COMMENT AND GIVE ME SOME IDEAS, OR MAYBE ONE OF YOU HAVE HAD THIS PROBLEM BEFORE......

THANK YOU.
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Old 01-26-2015, 09:24 PM
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Re: AUTO TO MANUAL ECU WONT START!! HELP

do you have Facebook? join up on the Florida Preludes page
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Old 01-27-2015, 12:33 AM
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Re: AUTO TO MANUAL ECU WONT START!! HELP

Yes I do, can you offer any help with my ecu problem?
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Old 01-27-2015, 12:59 AM
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Re: AUTO TO MANUAL ECU WONT START!! HELP

yea there are people who can help on there
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Old 01-27-2015, 12:09 PM
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Re: AUTO TO MANUAL ECU WONT START!! HELP

THANK YOU, BUT.... i thought that what this website was for.... i joined the page and posted my issue. PLEASE< ANYONE HAVE ANY IDEA WHAYS GOING ON HERE WITH MY CAR>> THANKS

SO, I GOT AN UPDATE FROM JDM, THEY SAID I MIGHT HAVE TO REPROGRAM OR REFLASH THE ECU??? SO WHO CAN DO THIS, ANY SHOP OR DO I HAVE TO GO TO SOMEONE SPECIFIC.

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Old 01-27-2015, 08:12 PM
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Re: AUTO TO MANUAL ECU WONT START!! HELP

Why don't you just modify your existing auto ecu, you just desolder a resistor and solder it somewhere else in the circuit board
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Old 01-29-2015, 02:19 AM
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Re: AUTO TO MANUAL ECU WONT START!! HELP

I own an older prelude and am not sure but could it be the immobilizer?
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Old 01-29-2015, 08:47 AM
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Re: AUTO TO MANUAL ECU WONT START!! HELP

doesnt the car go into limp mode like this if there is an oil pressure issue? a clogged vtec solenoid possibly.

edit: sorry missed the second part, half asleep. if there is a question about the ecu id try swapping for another if possible or if you feel confident double check all the connections yourself if possible. sorry not very experenced with ECU's i always tossed them in the trash if they didnt plug in and work

Last edited by Fryanb; 01-29-2015 at 08:56 AM.
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