Finaly 5AFE Swapped in EE90

[Vaqas1]

12 KM is very good :). Consumption is not a issue with my engine as well but idle is. I also raised RPM from the throtle body adjustment screw.

[ahsanonline]

there is no idle speed adjustment screw on my throttle body....ICSV is there for that purpose!

[Vaqas1]

Let me find a pic for you. Cant find one. Its under the place where the accelerator wire is connected.

[BootyBooter]

Guys what do think of this Replica Lamborghini marcielago on a volkswagon beatle chassis being built in F-11 opposite the PTCL exchange

[Xulfiqar]

^^ WHY did you touch that screw - its locked into place for a reason. its the calibration point for the throttle blade and TPS. if you fiddle with it too much you will end up with a twisted throttle blade and shaft in the throttle body. The throttle blade is set from the factory for proper MAP signal, TPS and throttle plate angle taking into consideration of engine temperature too.

There is actually no idle adjustment screw on this engine (if you look at the original cars bonnet sticker that had this engine it also says no idle speed adjustment)

Ive seen all CNG shops in Karachi fiddle with that screw - and I literally want to shoot them.

A proper idle speed adjustment screw is the brass bleed screw that you see on older Toyota throttles

[SER_GTR]

I finally set the tps using resistance method. at fully closed throttle it measures 0.31k ohms...Idling for the most part was very good today (mashallah!!!). but WOT resistance of the sensor was measuring at 2.7k ohms i think. Isnt that too low?

its ok....just make sure idle one is not that high and IDL get infinite after 15% throttle

[Xulfiqar]

its ok....just make sure idle one is not that high and IDL get infinite after 15% throttle

yep - just set IDL value correctly and your sensor will be perfectly aligned

[SER_GTR]

^^ Yea If There is manual adjustment....WTH ISCv is doing there
we Pakistani's always find our own ways of making things work.......!!

[Vaqas1]

^^ WHY did you touch that screw - its locked into place for a reason. its the calibration point for the throttle blade and TPS. if you fiddle with it too much you will end up with a twisted throttle blade and shaft in the throttle body. The throttle blade is set from the factory for proper MAP signal, TPS and throttle plate angle taking into consideration of engine temperature too.

There is actually no idle adjustment screw on this engine (if you look at the original cars bonnet sticker that had this engine it also says no idle speed adjustment)

Ive seen all CNG shops in Karachi fiddle with that screw - and I literally want to shoot them.

A proper idle speed adjustment screw is the brass bleed screw that you see on older Toyota throttles

Oh dont shoot me Well I didnt fiddle to much with it but yes i did to get the bloody rpm to be stable.

I kept asking people what the hell this screw is there for no one had any idea.

Today whole day RPM was stable at 900. Lets see what it does tom.

[Vaqas1]

^^ Yea If There is manual adjustment....WTH ISCv is doing there
we Pakistani's always find our own ways of making things work.......!!

When nothing works out than some way needs to be find

[Vaqas1]

BTW I set the TPS to original place where there is a paint mark as well of yellow color. Ohm showing around 50 though its behaving better.

[ahsanonline]

^^ WHY did you touch that screw - its locked into place for a reason. its the calibration point for the throttle blade and TPS. if you fiddle with it too much you will end up with a twisted throttle blade and shaft in the throttle body. The throttle blade is set from the factory for proper MAP signal, TPS and throttle plate angle taking into consideration of engine temperature too.

There is actually no idle adjustment screw on this engine (if you look at the original cars bonnet sticker that had this engine it also says no idle speed adjustment)

Ive seen all CNG shops in Karachi fiddle with that screw - and I literally want to shoot them.

A proper idle speed adjustment screw is the brass bleed screw that you see on older Toyota throttles

which screw is it that you're talking about? maybe mine is messed up already, il have to look for marks on it if any1 has previously opened it...

rpm comes down to just below the 750 mark when hot...im guessing its 700rpm. so far so good. there is some sort of misfire, gona have to diagnose that. Im gonna get new spark plugs. Any suggestion which ones to put in? Im thinking of going with the recommended 4afe plugs...need to set ignition timing too. dammit, too much work!

[Xulfiqar]

its the throttle stop screw the throttle cable pulley stops on. a small grub screw and a nut (6mm nut I think)

[Vaqas1]

Hmm not sure if its present in your engine 1st generation throttle body.

Its there in my engine 1st the idiot mechanic fiddle with it and than i did. Now I have to find its original position damn. 2E I misss uuuuu

[Vaqas1]

its the throttle stop screw the throttle cable pulley stops on. a small grub screw and a nut (6mm nut I think)

Any tips for its default setting?

[Xulfiqar]

^^ Yea If There is manual adjustment....WTH ISCv is doing there
we Pakistani's always find our own ways of making things work.......!!

e.g. as the plastic manifold Honda D engine does not have an idle adjustment like the TB on modern A series engines I had this car wheeled to me for high idle on petrol.

The CNG guys had drilled the the throttle plate - there was a HOLE in it.

I also had a 4 throttle towed to me as it was idling at 3500 rpms - (in all genius of the world someone had thought to service all 4 throttle bodies and messed up their calibration - one was sticking open about 10% and one was sticking at about 20% (causing the high idle) (they also had stuck a wooden piece into the ISCV port rubber pipe to block off the air supply.

The actual problem of idle speed adjustment and stumble on acceleration was because the person who wired it up forgot to connect the ISCV/O2 sensor/alternator switch positive circuit

[Vaqas1]

BTW why this screw has an effect on RPM? I mean little fiddle and you get different RPM some time 700 some time 800.

[Xulfiqar]

because it moves the throttle plate inside along with the TPS

[Vaqas1]

Should I leave it as it is or fiddle with it more. RPM on petrol is 900.

I would rather like this throtle plate stop screw to be at default position. How I dont kno.

[ahsanonline]

Oh that screw!
I remember that screw, its the screw I looked at for a good 15mins while servicing the throttle body, deciding the pros and cons of opening it or leaving it untouched
I decided to be minimally invasive, didnt touch it one bit.