you have air leaks. for sure.
where takes hard work.
Isc (electric) is on right side of TB
THE IAC thermal is in base of TB.
the iSC has and end screw. (factory set for gentle close)
THE IAC adjustment is very very hard reach in the base. under that 3 screw cover.
the ISC has spring and is always closed, with no power, or plugged.
the Iac only closes above 150F.
the IAC can not be removed, So how did you prove its closed? the clay trick>? (OR off those tiny screws on cover?)
I will assume isc and iac are closed, and the TV and the bleed (PO gave up) are all closed
so will say you have a leak , in the intake or some other TB Hidden link,
pinced all hoses.?
PCV hose cracked.?
brake booster hose removed and plugged?
what else>? map hose cracked.?
3 speed vacuum line to its modulator cracked? or mod itself cracked in inside, if 3 speed, pinch hose in 1min flat. idle not drop.?
EGR main BASE GASKET CRACKED.
egr main body cracked,.
egr main guide pin worn so bad it sucks air?
by the process of elimination, we find this
one guy, all ways were checked and we found the TB HAD FREEZE DAMAGE IN SIDE, WERE no man can see. (behind IAC guts)
this was found by making a special TB base gasket, that blocks off holes. (normally open) see my slide show for the 3/8" hole.
also he mid Tb GASKET CAN CRACK AND SUCK IN AND RENDER THE BLEED USELESS.
where takes hard work.
Isc (electric) is on right side of TB
THE IAC thermal is in base of TB.
the iSC has and end screw. (factory set for gentle close)
THE IAC adjustment is very very hard reach in the base. under that 3 screw cover.
the ISC has spring and is always closed, with no power, or plugged.
the Iac only closes above 150F.
the IAC can not be removed, So how did you prove its closed? the clay trick>? (OR off those tiny screws on cover?)
I will assume isc and iac are closed, and the TV and the bleed (PO gave up) are all closed
so will say you have a leak , in the intake or some other TB Hidden link,
pinced all hoses.?
PCV hose cracked.?
brake booster hose removed and plugged?
what else>? map hose cracked.?
3 speed vacuum line to its modulator cracked? or mod itself cracked in inside, if 3 speed, pinch hose in 1min flat. idle not drop.?
EGR main BASE GASKET CRACKED.
egr main body cracked,.
egr main guide pin worn so bad it sucks air?
by the process of elimination, we find this
one guy, all ways were checked and we found the TB HAD FREEZE DAMAGE IN SIDE, WERE no man can see. (behind IAC guts)
this was found by making a special TB base gasket, that blocks off holes. (normally open) see my slide show for the 3/8" hole.
also he mid Tb GASKET CAN CRACK AND SUCK IN AND RENDER THE BLEED USELESS.
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