tampa mike

iTrader: (2)

EDIT: FIXXED ISSUE, SWAPPED OUT THE NGK 6S, FOR SOME NGK 7S, AND GAPPED THE AT .025 AND SHE RIDES OUT LIKE A CHAMP!




Hello all, i need your help!

car is a 94 sc300 with an aristo swap. car has been running perfectly for me until today.

Car has sat in the garage for 2 weeks and I decided to drive it today.

Car idles just fine and will pull into boost just fine at low to medium throttle.

But at WOT it breaks up and misfires all the way to redline.

Car free revs beautifully and sounds great.


-Car has brand new OEM coilpacks on it which are about a month old
-Brank new NGK plugs, twice
-Car has FMIC, hard pipe kit, 3 inch exhaust

Car will boost 14psi(on my crappy autometer gauge)





ON A SIDE NOTE............I have noticed with my car that the Check engine light never comes on, well its not wired up so Im not sure if I even have any codes, anyone have any idea how to do it? I know which pin it is as the wire is about an inch long and not hooked to anything, just not sure on where it goes?


Alot of my supra buddies seem to think its a Crank angle sensor, or one of the camshaft position sensors


thanks in advance guys

RyanV

iTrader: (9)

Have you pulled back the coil pack wiring sheathing and check for cracked wires?

Also, check the coil pack connectors, make sure all the wires are snug into the clips.

The crank angle trigger wheel can seperate from the timing cog, but that would cause all kinds of havoc.

tampa mike

iTrader: (2)

just to make me feel good, im gonna swap on my buddies supra coilpacks and maybe his ignitor just to see what happens.

i may toss in some ngk 7s and see as well.

all my clips are brand new along with the coilpack sbut im game for any help riht now.

bodydrager

iTrader: (4)

Mine is doing the same thing. Runs perfect when I rev it in park it but when I put it in drive it misfires from half throttle all the way to wot. But my cel is connected and is giving me 3 codes. o2 sensor, TPS sensor and Map sensor. All three new sensors are due to arrive tomorrow, i'll try them one at a time to try to figure it out and let you know.

Dew23

iTrader: (1)

Check the gap on the plugs with out a dli gap them at about 28.

SHOLEXMAN

Do you have a high flow fuel pump? How long have you been running this setup before this happened or did you just finish the swap? Check the gap on the plugs.

tampa mike

iTrader: (2)

I have a walbro in the car, so i know fueling is okay.

I believe it is the MAP sensor, as Im not able to check my codes because the previous owner didnt wire it into the car, unless someone else knows a way to do it.

Car has been running fine for months now, just all of a sudden after being parked in the garage for a week or so, it ran like this

bodydrager

iTrader: (4)

Well I just tried all the parts and no change and i'm still getting the same CEL codes so I can't help ya out.

1sxyrxy

sounds like spark plugs are gapped to much,

tampa mike

iTrader: (2)

For reference I have an 800+hp turbo civic and am very intune to the plugs.

I replaced them with some new 6s, and gapped tham at .028 and still the same thing.

Since I am unable to view any of the codes via the diagnostic light I am gonna try a couple sensors and see how that turns out till I can either get it wired up or switch over to AEM and ditch some of the regular sensors

tampa mike

iTrader: (2)

update:

changed coil packs from a known good Mk4 supra
MAP sensor from same supra
Ignitor from same supra.

No difference whatsoever, same busting up


any other ideas?

I am also wondering if im feeling boost cut as my car has been converted to TTC mode and will hit 16psi by my gauge

F4A22

iTrader: (14)

Does it have a greddy bcc?

tampa mike

iTrader: (2)

No it does not, I orsered one yesterday just to make sure im not running up on the boost cut