(4AGE 20V Silvertop) what does this connect to?

[hiroshima_scream]

hi guys

my first post here at toymod, just got this AW11 with a silvertop 20v 4AGE as a project car. I don't know anything about these cars.

I have 2 pictures, and not sure what should be connected to these hose/pipes.

The car starts fine with these open but idles at about 2000-2100rpm

When I put block them off the car stalls. Also a small white puff of smoke comes out when the engine stalls.

The car has a different ECU and its got what looks like a barb to stick in a vacuum hose for maybe the MAP sensor? Car does not have an airflow meter...

So my question is...

what does into the open pipes...

And how do I get the car to idle a bit lower after its warmed up, currently it just sits at 2000rpm.

thanks in advance

[MR22ZZ]

really more of a silvertop problem than an AW11 4AGE issue, perhaps the title could be changed to better reflect this and you may get help from the right people.

Wish I could help more but I don't know 20Vs unfortunately,

[BLK_20v]

There is a bracket with all sorts of pipes that hang off it that involve..

Charcole canister
Powersteer idle up (2 hoses to power steer rack)
Purge Valve

Not sure wat it would connect to now that the stock bracket has been deleted... If you aren't worried about an erratic idle, unplug the 4 wire plug that is at the bottom of your pic... It'll delete the iscv , but may throw an engine code. I'm not going to run idle control with my haltech.

[MR22ZZ]

possibly vac line for brake booster? seems about the right size.

[hiroshima_scream]

Ecu in pic is a razorback and from research it has an internal map sensor

[BLK_20v]

Yeah looks like that is the case, but brake booster should be able to be blocked... 20v silvertop has two brake booster vacumes, one on each side of the engine.

That yellow line looks like the map sensor feed.

[hiroshima_scream]

Yeah it just stalls when I completely block it and if I partially block it off restricting the air Idle is affected . Do you know what's that bit with all the hoses coming off it called?

[wilbo666]

Not too up on it, but is that a Razorback ECU perhaps...?

I would have thought what looks to be the MAP sensor line on the ECU should be connected

Cheers
Wilbo

[hiroshima_scream]

yeah its a razorback ecu, do you think its the yellow line that should be connected? Currently it's just hanging there...

[Sam_Q]

it's not for the brake booster. Block it and tighen your throttle cable more. Also bypass you idle control valve if your not using it.

[toyoda]

Connect the yellow pipe up to the barb on the ECU.

Without a working PIM sensor it will stall out for sure.


Toyoda

[Sam_Q]

whats a PIM sensor?

[hiroshima_scream]

Thanks for all the responses guys.

Currently it drives but is underpowered with the hose just hanging there.

I will connect the yellow pipe to the bar on the ECU and block the open pipe.

Does anyone know what the pipe is meant to connect to before it was left open?


Will do this after work and report back.


PS. where is the idle controller?

Also I downloaded these 4age manuals 100mb+ each going to go through that thanks alot for your help

[toyoda]

SAM-Q

PIM is Pressure Induction Manifold

MAP is Manifold Absolute Pressure.

Depends which Manufacturer you work for but one sensor 2 names !

Toyoda

[70XIN]

That pipe that's currently "open" normally goes to an aircon idle-up valve. If you don't have one, you should be able to block it off.

You mentioned your idle is high - do you have a vacuum line going to the idle-up valve underneath the quads? If not, this could be your problem. From memory, that yellow vacuum line is the port they use for the idle-up valve (at least that's the case with my blacktop).