well guy's this isn't my first rodeo,
but i've come across a problem i do need some brain storming power for.
The Issue is the car will fire up, idle smooth, and will idle stoich for about a min or less, and then richen up till it's running rough. and 9/10 afr im guesing pegged.
Also when you apply throttle out of gear it will rev to 1500/2000 and loop back and forth between the rpm range, and doesn't matter how much throttle you give it.
most quick blips would kill it.
i found the map sensor was reading off, it would rear 60-70kpa with key on, dissconnected from any vac source. when you start the car it would jump to 85/90, im roughly at 1100 feet in elevation. so from research i've learned you lose 4% of the pressure for every 1000 feet. i brought my map from my maft pro up and tested it, showed very similar results and ran the exact same way.
so 101kpa sea level i should see 96kpa
i've made attemps to pull as much as -55% on the main scale. and have also adjusted the ve table to a point which should have shut the car off. with vaules of 1/2 in the first 24 cell's. so there was a big flat spot in the map.....
from what i have seen the maft pro was soldered in correctly. just the hac mod wasn't done for the 89 ecu. which was pretty simple, use a razor balde to sratch a line through the R505 trace, and solder a wire to the ecu input
http://forums.celicasupra.com/showthread.php?t=32695&highlight=hac+mod
when i first installed the motor and was setting the timming, i checked the code's. 21, 51
intake air temp sensor(21) and open switch, tps or a/c and im guessing since the a/c button is disconnected must have opened the tps while testing, but i re-set the tps any ways.it was @ .54 and i've backed it down to .38
Now the car spec's are:
maft pro
780cc Rc's
fordged pistons
eagle rods
mhg
fresh valve grind
new rings & bearings
boss series turbo 67mm.
i've recently have done the 89+ hac mod to the ecu. which through the code 35 for the hac mod sensor...
i also have flashed the maft pro w/ 5.0 files.
the codes atm are 21air temp sensor 24 o2 heater circuit 31-rich condition for to long. 35 hac sensor
the J tube has been drilled and still on stock fpr and im not sure if it's a ture walbro that should be in the car or if it's a stock pump .
but i've come across a problem i do need some brain storming power for.
The Issue is the car will fire up, idle smooth, and will idle stoich for about a min or less, and then richen up till it's running rough. and 9/10 afr im guesing pegged.
Also when you apply throttle out of gear it will rev to 1500/2000 and loop back and forth between the rpm range, and doesn't matter how much throttle you give it.
most quick blips would kill it.
i found the map sensor was reading off, it would rear 60-70kpa with key on, dissconnected from any vac source. when you start the car it would jump to 85/90, im roughly at 1100 feet in elevation. so from research i've learned you lose 4% of the pressure for every 1000 feet. i brought my map from my maft pro up and tested it, showed very similar results and ran the exact same way.
so 101kpa sea level i should see 96kpa
i've made attemps to pull as much as -55% on the main scale. and have also adjusted the ve table to a point which should have shut the car off. with vaules of 1/2 in the first 24 cell's. so there was a big flat spot in the map.....
from what i have seen the maft pro was soldered in correctly. just the hac mod wasn't done for the 89 ecu. which was pretty simple, use a razor balde to sratch a line through the R505 trace, and solder a wire to the ecu input
http://forums.celicasupra.com/showthread.php?t=32695&highlight=hac+mod
when i first installed the motor and was setting the timming, i checked the code's. 21, 51
intake air temp sensor(21) and open switch, tps or a/c and im guessing since the a/c button is disconnected must have opened the tps while testing, but i re-set the tps any ways.it was @ .54 and i've backed it down to .38
Now the car spec's are:
maft pro
780cc Rc's
fordged pistons
eagle rods
mhg
fresh valve grind
new rings & bearings
boss series turbo 67mm.
i've recently have done the 89+ hac mod to the ecu. which through the code 35 for the hac mod sensor...
i also have flashed the maft pro w/ 5.0 files.
the codes atm are 21air temp sensor 24 o2 heater circuit 31-rich condition for to long. 35 hac sensor
the J tube has been drilled and still on stock fpr and im not sure if it's a ture walbro that should be in the car or if it's a stock pump .
