6G Celicas Forums

The other day I was driving up a big looong hill, and decided it give er a bit. I was boosting around 10-11 that night, got up to about 5500-6000 rpm and then she TOTALLY bogged down. It felt like someone slammed on the brakes. This is the first time its done this. I have a hks fcd installed. is there any way to "test" it to see if it working properly?

I also noticed my EGT's were high (1400+) and as soon as I let up they started to drop back down.


Any input?




This post has been edited by 6gsillyca: Oct 15, 2006 - 9:06 PM

It could possibly be a boost leak, it feels like fuel cut. I assume you're running an ST185 3SGTE?

-Doc

Yes its a 2nd gen 3's.

As far as leaking boost it didnt seem like a boosting issue that happened that night. It didnt just get "slow" it felt like someone slammed on the brakes (jerked me so much my hand accidentally flicked on signal) but was gone in a split second.

check your ecu for codes. if you got fuel cut, it will show up as a code.

what kind of intercooler do you have on the car? it could also be the ecu going into safe mode because it detected detonation.

Fitting an FCD is suicide, pure & simple.

The fuel cut is there for a reason, the reason is it stops the car leaning out, want to know what leaning out is… you probably just did it!!

Your fuel leaned out, the intake temps went sky high, EGT’s go through the roof, loadsa knock, ecu retards timing & brings in the VSV you feel a sudden slam & car runs like a 3 legged dog.

So many owners have killed their engines over here because of the FCD’s… no one uses them anymore

what you said is only true for the 3rd gen 3sgte. he has a 2nd gen 3sgte that uses the afm to measure air. the map sensor on that motor is ONLY used for fuel cut and for the factory boost gauge. its totally safe to install an fcd on a 2nd gen motor.

Will try and get to a parts store today and see if they can check for codes. Intercooler is from an isuzu diesel i believe.

Why would a car lean out so much all of a sudden though? If it did then there would be something wrong with fuel delivery/ignition system (injectors, rail, pump etc) Otherwise it shouldnt happen. Or it should be happening all the time, not just once in a while.

Boost was set to around 10 but had creeped up to as high as 13 a few times previously that night.

This post has been edited by 6gsillyca: Oct 16, 2006 - 1:25 PM

you can check your own codes. you dont need a parts store or a mechanic.
http://celicatech.com/forums/showthread.php?t=10155

post some pics of your intercooler setup . it sounds small.

I need to get it connected to a reader.

Intercooler is 19x14x3.

no you don't. only obd2 motors like the 3rd gen need a reader. 2nd gen is obd1, all u need is a paper clip.

Where would I check it? Ive read that for obd1 cars you can just connect the T1/TE1 on the diag under the dash. Which diag in the hood do I need to jump/ what do I jump?

read that link i posted. it gives you a step by step.

I did that but got nothing. I tried it in the other diagnositc connector on the pass side of the bay (smaller and grey) and still got nothing. Although I DID notice that when I put it to "on" the engine light does not come on (w/o any thing connected) anyways so I could have a burnt bulb...

you use the diagnostic box in the engine bay. bridge te and e1. turn they key to ON, and count the flashes. then look up the code in the list.

if you take out the paper clip, and just turn your key to ON, all of your diagnostic lights should come on for a few seconds. if the engine one doesn't then your bulb needs to be replaced.

I know that I was just wondering which diagnostic box (there is a bigger black one on drivers side, and a smaller grey one on pass side, both have the T1 connections.

Im guessing there a more bulbs burnt out in the cluster too. The only thing that lights up on ON are brake, abs, batt and seatbelt. I know there should be a few more bulbs (airbag, oil, engine) that dont light up so i guess i will have some bulbs to change. Does anyone know if these bulbs are the same size as the cluster (194)?

who did your swap?

you should only have one gray diagnostic box in the engine bay.

The later part of what I said goes for all versions, I was talking about fuel starvation/leaning.
Granted an FCD on a GEN III is a complete no no, but the same goes for the other versions unless you have supporting mods, there was no mention of supporting mods when I posted.

Why I stand by FCD's being suicide is because on teh GEN II teh stock fuel maps only go to 12PSi, teh later ones including cs/rc are set to 17PSi, if you go above the set values teh injectors will be working at 100% duty (Fuel starvation/leaning, det, timing retarded, VSV kicks in blah, blah, blah) (How old are the injectors?? When was teh last time they were flow tested?? etc etc, all these elements add to teh soup so to speak)…
IIRC to determine if you have a 17PSi ECU it has a B in teh 2nd part of the part number.
If you have teh 17PSi version ECU you will then have to work out if the FCD is a raised limit version or teh version that just removes teh fuel cut all together… loose wire?? Limit set too low??
Reading about teh intercooker doesn’t sound healthy at all