map sensor or something else?

[Apsogos]

hello guys

the bad luck is chasing me!
i need help....
yesterday my car was at my mechanic...i replaced some water hoses (the small ones near the thermostat and one small corner hose of the heater valve.....my mechanic drained some water fluid in a bottle from the radiator to do the work and he finished the work refill.
He changed the brake hoses with perfomance hoses and new brake fluid too.
I changed the starter with a reduction starter too.thats all the work that did.
He had tested the car yesterday..today i took the car after 5 minutes when i press the brake to a slope to decrease the speed and stop , the engine shuts down ...i thought it was my fault but the engine cranking but not firing!i called my mechaning with check the connections everything seemed to be fine.He remove a cable from the plug...the car fired worked with 3 cyl and after he connected the 4trh...
the fauld on the ecu was 2 i think is vacuum sensor - vacuum sensor circuit...
the line are all new ...
we removed the battery pole to eraze the fault...
everything seemed fine ...
i got home fine...

Today at noon i got down at my car to check....cause i didnt like that she shutted down in the morning....
I turn her on and and unsteable idle (i check the faults and fault 2 again) .Not hunting but unstable...pap pap pap ...

I measure the volts of the map source 4.92V (the manual says 4-6 v if i remember right.

i have check the hose of the map...again ... i replace it ..the same...

i removed the map....
I test it to a friend celica 4age 16v 1989 the same engine with me 2nd gen tvis.I install the map we turn her on(celica)
it work fine for the moment....
any thoughts?


ps ae92 corolla gti hatch sec gen tvis

[Apsogos]

I tryied other map the same thing unstable idle(not hunting) and the thing is that the engine from cold not choking to 2000rpms eg but to 1500 max 1200rpms when hot 700rpms and feeling unstable...
on the street seems to me no loss of power

no ecu faults after testing

[Apsogos]

a video to help you understand

http://youtu.be/A5pqax1fMBU

[totta Crolla]

Please block off the breather pipe that goes into the inlet plenum
from the rocker cover and report back.
(the easiest way to block it off is to screw a bolt into the rubber pipe)

Also see here:
http://www.hachiroku.net/forums/showthread.php?t=30643

[Apsogos]

totta Crolla Wrote:Please block off the breather pipe that goes into the inlet plenum
from the rocker cover and report back.
(the easiest way to block it off is to screw a bolt into the rubber pipe)

Also see here:
http://www.hachiroku.net/forums/showthread.php?t=30643

you this pipe?right?







i ll do it after work and report back!thank you very much

[totta Crolla]

Apsogos, sorry I got with you and the other chap on Club4age,
disconnecting that pipe will not help you I'm afraid !

[Apsogos]

[Apsogos]

a look at my engine

http://www.youtube.com/watch?v=9h37r0rpE...e=youtu.be

[Apsogos]

Unstable idle and i hear , i dont know if you can hear it too a pop pop from the exhaust behind
yesterday afternoon

http://youtu.be/fq0T1x1umJI

yesterday night

http://youtu.be/XCp_VT9gn1w

Today morning
http://youtu.be/R9r1PT3WQ1w

[totta Crolla]

The high idle when cold is perfectly normal.
950rpm when warm is perhaps a little high and the FSM suggests
+/- 50rpm @ 850rpm