alfa mr2

hi
we have just finished rebuilding my drag car, alfa mr2

all is good except, that the car is massively overfueling on idle,

i have been over everything completely time and time again,

one problem is i have a completely aftermarket engine loom that spl built for my car, when it was in japan , so no colours correspond too diagrams, fuel pressure is fine at 3 bar on idle, injectors are working properly,

i have a reworked stock ecu by spl
and also from that a piggy backed hks f con v-pro

a mistake was made when an earth was accidently connected to a live on the alternator and it blew the 7.5 amp ecu ignition fuse in the engine bay fuse box( not good)) hmmm

i think that the ecu's have been backfed

i have changed the typical sensors and all seems fine now except for the overfuelling anyone know of anyway of clearing this,or anythng that may make this happen.

its probably something stupid,

short of no luck here, im going to send the ecu's first off to a specialist to check the curcuit boards, and thento a hks pro writer garage to have the ecu looked at and see if the map still in there, the car was off the road for a fair while about 6 monthes, but all i have spoke to said the hks ecu will still have its map in it as e-prom ecus very reliable ..

please help totb is looming and its about time the car made a point in the uk?????

ac427cpe

what engine are you running? with the amount of custom stuff you have goin on... it could be any number of problems. I would start by making sure the injectors flow the correct amount of fuel.

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hello, i am Dan

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alfa mr2

hi yeah thanks for the help, erm im running a custom engine that was commissioned by three companys , spl , jun, and speed house alfa,

it was typically designed for drag , spec is quite comprehensive , and a custom made block for all the internals to go into, plus sleeved .

hence its power output 754bhp , that was the old spec so its just going to dyno soon now it has new spec should be good,and everyones is sure of more,

i had checked all the injectors etc,, i finally found out what the problem was fuel vapour has killed the throttle position sensor and was basically on wide open throttle , so ecu was fuelling accordingly,

nice to meet you the names adam , drop me a mail at addmr2@hotmail.com
or send add me to yourt msn!!