today started by putting more fuel in the car
(sometimes its the simple things...) nah still no good

so i got shorter bolts, maybe the longer bolts with the metal spacer
didn't have enough tesion on the throttle body and plenum. still no luck


swapped the fuel regs, because they had different part numbers,
and couldnt see the diff on
the net. spec wise.


jap was denso 1381 (black one)
aus was denso 1382 (gold one)
still no luck

removed the rubber that was shoved in the isc motor hole


not sure its supposed to be ther or not
the cars i got the other isc's off didnt have anything like that.
Still no luck

checked i had the 12v on the middle 2 pin on the isc connector with ignition on
and got my 5v on the tps Green/red wire to green/black wire (sensor ground pins 24,17 of ecu) with ignition on


idles at less than 500rpm real rough, gave it a little bit of a rev. then it held it at 2000rpm
but as soon as turned it off and back on it would still rev at 500rpm or less and stall itself ocassionally.
tried adjusting the screw on top while it was running had no effect.

vaccum hoses all seem to be ok

i got no other ideas

spose it doesn't matter which way the cooling hoses are? as long as coolants running through the
coolant passages?

do the solenoids need to be on there? have put vaccum cap block offs on all the emission pipes on throttle body
and put a vaccum hose loop through the two pipes on the egr also.

dunno why should all work haven't changed much, just the rail and throttle body
mechanic time i think. Will be interested in what they find.

_________________
*81 GH Sigma*
*85 GK GSR Sigma - 2.6L, 4G54, 71.6rwkw, NA pig, TR magna EFI conversion and computer, lumpy crow cam*
*85 AB GSR Cordia - 2.0L, Gen 1 DOHC 4G63, 116.33 fwkw, 13psi ,Stocker TD05H 14B Turbo, Stocker computer, needs work to slow*

Driving a Cordia is not a Crime

this is going to sound weird , but I just this problem with my 2nd evo 2 and it was spark plug for some reason , I cleaned them and it went perfect again , I also took the ISC out and cleaned it up etc , and nothing changed

_________________
AA Silver saved,4g62t SOHC,Td05,FMIC
AB Silver bullet in the build, 4G62T DOHC
AB Silver original unrestored 1 owner car
AC Wanted $$$(must have 4g62t, or I can swap it back)

last cordia:
Blue 88 GSR turbo AC with 62t, TD05 14B and FMIC
(I WOULD LIKE IT BACK IF POSSIBLE, OLD REG SYH354)

i'll try it, thanks. do you know if the rubber thing is spose to be in there?

are you on the 4g tuner forum?
if so do you know anyone who has a meeks 2.5" throttlebody elbow?
can't get em anymore apparently, keen to get one for later on. thanks

_________________
*81 GH Sigma*
*85 GK GSR Sigma - 2.6L, 4G54, 71.6rwkw, NA pig, TR magna EFI conversion and computer, lumpy crow cam*
*85 AB GSR Cordia - 2.0L, Gen 1 DOHC 4G63, 116.33 fwkw, 13psi ,Stocker TD05H 14B Turbo, Stocker computer, needs work to slow*

Driving a Cordia is not a Crime

Out of interest Marc, what throttle body gasket did you use?

Ummm I just used the gasket that was on
There. Hopefully is the right one. Prob not
The best idea should've used a new one
But seemed intact still. Just didn't think of
Replacing it cos I'm only borrowing the throttle body
Have to return it. Once I'm Passed hopefully. Thanks

_________________
*81 GH Sigma*
*85 GK GSR Sigma - 2.6L, 4G54, 71.6rwkw, NA pig, TR magna EFI conversion and computer, lumpy crow cam*
*85 AB GSR Cordia - 2.0L, Gen 1 DOHC 4G63, 116.33 fwkw, 13psi ,Stocker TD05H 14B Turbo, Stocker computer, needs work to slow*

Driving a Cordia is not a Crime

Ok so the other week got some new plugs.
Haven't had much time to work on it. After what s1vart said

Pulled the plugs out. Black and sooty as hell
Whacked the new plugs in. Gapped em to
0.8mm like the ones I pulled out. It had BPR6ES in it
The store gave me BP6EY look the same except
For the v cut out in the electrode. Hopefully there
Right. Tried starting didn't idle at all just turned over
Wound the throttle body screw out a bit tried again
Have a lil gas then was idling nice. For few mins
Then all of a sudden revved itself to 2k(guess when it warmed up a tad) and was violently going
Up and down in revs. Something ain't right. Hope haven't buggered
The ecu :/

_________________
*81 GH Sigma*
*85 GK GSR Sigma - 2.6L, 4G54, 71.6rwkw, NA pig, TR magna EFI conversion and computer, lumpy crow cam*
*85 AB GSR Cordia - 2.0L, Gen 1 DOHC 4G63, 116.33 fwkw, 13psi ,Stocker TD05H 14B Turbo, Stocker computer, needs work to slow*

Driving a Cordia is not a Crime

Sounds like the ECU is looking for idle.......does the throttle body have an idle switch?

Erratic idle with also ensure the TPOS is not correctly set.

Idle switch. Is that same as the throttle
Closed switch?

Tps seemed to meter the same resistance
Wise to the jap one. At closed throttle and full. What's the best way to
Set it? If was full of oil would that be a problem?
The isc was full of oil so tips prob is too. Should
I try to get another one? How's ur ac going?

_________________
*81 GH Sigma*
*85 GK GSR Sigma - 2.6L, 4G54, 71.6rwkw, NA pig, TR magna EFI conversion and computer, lumpy crow cam*
*85 AB GSR Cordia - 2.0L, Gen 1 DOHC 4G63, 116.33 fwkw, 13psi ,Stocker TD05H 14B Turbo, Stocker computer, needs work to slow*

Driving a Cordia is not a Crime

The idle switch or closed switch allows the ECU to read the throttle is closed........I don't have any detail on the TPOS voltages but I would treat them as the same as cordia......a correctly set TPOS makes all the difference.

The throttle close switch appears to be working shorts
To ground when closed. Black wire pin 6 of ecu
Measured it that end also. Seems ok

I'll try fiddling with the tps then thanks

_________________
*81 GH Sigma*
*85 GK GSR Sigma - 2.6L, 4G54, 71.6rwkw, NA pig, TR magna EFI conversion and computer, lumpy crow cam*
*85 AB GSR Cordia - 2.0L, Gen 1 DOHC 4G63, 116.33 fwkw, 13psi ,Stocker TD05H 14B Turbo, Stocker computer, needs work to slow*

Driving a Cordia is not a Crime

Umm did a lot of reading on tps setup
On the us 4g63 lot of people saying should
Set it to 10percent of the 5v supply when throttle closed
So 0.5v when throttle closed on the green/white
Wire that goes to pin 19 of ecu. Mines measuring
0.662v this should be close enough, shouldn't it?. Cos
I have to strip the rail again to get to the tps. And
Don't wanna do that if gonna be still the same, after adjustment
Would that cause idle fluctuations?

_________________
*81 GH Sigma*
*85 GK GSR Sigma - 2.6L, 4G54, 71.6rwkw, NA pig, TR magna EFI conversion and computer, lumpy crow cam*
*85 AB GSR Cordia - 2.0L, Gen 1 DOHC 4G63, 116.33 fwkw, 13psi ,Stocker TD05H 14B Turbo, Stocker computer, needs work to slow*

Driving a Cordia is not a Crime

Done more reading faulty fiav maybe?
No matter what looks like I gotta strip down again
:/

_________________
*81 GH Sigma*
*85 GK GSR Sigma - 2.6L, 4G54, 71.6rwkw, NA pig, TR magna EFI conversion and computer, lumpy crow cam*
*85 AB GSR Cordia - 2.0L, Gen 1 DOHC 4G63, 116.33 fwkw, 13psi ,Stocker TD05H 14B Turbo, Stocker computer, needs work to slow*

Driving a Cordia is not a Crime

I got sick of the idle prob.

emissions time

Just started plumbing vac lines for the pcv and purge
Solenoid. Hooked up the egr lines to the tvv and hooked up
The lines back to the throttle body ports.
Now just have to put waste gate solenoid in. And the
The fuel pressure solenoid.

Spaghettios

_________________
*81 GH Sigma*
*85 GK GSR Sigma - 2.6L, 4G54, 71.6rwkw, NA pig, TR magna EFI conversion and computer, lumpy crow cam*
*85 AB GSR Cordia - 2.0L, Gen 1 DOHC 4G63, 116.33 fwkw, 13psi ,Stocker TD05H 14B Turbo, Stocker computer, needs work to slow*

Driving a Cordia is not a Crime

on the original SOHC setup a difference of 0.1 was huge

_________________
"hahhahahhaa its good its got straw for a pipe frontn.... the bigger that hole gets the more money falls out of ur wallet... "



Epic i must say.

Oh ok kool. One last thing I can try before
Giving to mechanic. If the closed voltage is too high
Would that cause rough idle or just to high idle
Also plugs were covered in black sooty carbon. (brand new plugs done no work what so ever)

_________________
*81 GH Sigma*
*85 GK GSR Sigma - 2.6L, 4G54, 71.6rwkw, NA pig, TR magna EFI conversion and computer, lumpy crow cam*
*85 AB GSR Cordia - 2.0L, Gen 1 DOHC 4G63, 116.33 fwkw, 13psi ,Stocker TD05H 14B Turbo, Stocker computer, needs work to slow*

Driving a Cordia is not a Crime

i cant remember what high/low does i just know if i don't have mine set to 0.48 or with in 0.05 of that it ran like a pig but thats a sohc cordia i dont know anything about VR4's bitza is defiantly the man to ask or a work shop manual maybe

_________________
"hahhahahhaa its good its got straw for a pipe frontn.... the bigger that hole gets the more money falls out of ur wallet... "



Epic i must say.

oh ok kool thanks again for the info

_________________
*81 GH Sigma*
*85 GK GSR Sigma - 2.6L, 4G54, 71.6rwkw, NA pig, TR magna EFI conversion and computer, lumpy crow cam*
*85 AB GSR Cordia - 2.0L, Gen 1 DOHC 4G63, 116.33 fwkw, 13psi ,Stocker TD05H 14B Turbo, Stocker computer, needs work to slow*

Driving a Cordia is not a Crime

got some custom stickers made up for later on

_________________
*81 GH Sigma*
*85 GK GSR Sigma - 2.6L, 4G54, 71.6rwkw, NA pig, TR magna EFI conversion and computer, lumpy crow cam*
*85 AB GSR Cordia - 2.0L, Gen 1 DOHC 4G63, 116.33 fwkw, 13psi ,Stocker TD05H 14B Turbo, Stocker computer, needs work to slow*

Driving a Cordia is not a Crime

today whacked the fuel pressure solenoid in


pulled the existing line off


whacked the lines into and out the solenoid etc


then did the wastegate solenoid

_________________
*81 GH Sigma*
*85 GK GSR Sigma - 2.6L, 4G54, 71.6rwkw, NA pig, TR magna EFI conversion and computer, lumpy crow cam*
*85 AB GSR Cordia - 2.0L, Gen 1 DOHC 4G63, 116.33 fwkw, 13psi ,Stocker TD05H 14B Turbo, Stocker computer, needs work to slow*

Driving a Cordia is not a Crime

is it running better?

_________________
"hahhahahhaa its good its got straw for a pipe frontn.... the bigger that hole gets the more money falls out of ur wallet... "



Epic i must say.