Unknown plug located at intake manifold

[PROJECT N00b]

I found a black plug that was disconnected at the intake manifold, right where the accordion hose plugs into the manifold. I connected it back to its appropriate plug, I just wanted to know what it's for...Ill get some pictures up later.

p.s. I accidentally posted in the wrong sect. earlier.

 

[CRE]

?? TPS sensor? Sorry, your description is a bit vague.

http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?Section=FI&P=100

 

[PROJECT N00b]

Ok, I got pictures uploading right now...I got pictures of the plugs and pictures of the foaming coolant.

Pictures of the plug.

1st picture is the over view, 2nd is the inset.

here are the pictures of the coolant

1. the hose

2. the foaming coolant dripping out

3 the pool of the coolant that spewed out.

 

[CRE]

The collant is getting blown out of the overflow tank because: a) it was simply too full b) your radiator cap is venting at too low of a pressure and need to be replaced c) you've got extra pressure getting into the coolant system (exhaust gas or oil)

The plug is the cold start injector.

 

[PROJECT N00b]

so that would explain why i had to step on the gas this morning to get it going.

 

[CRE]

You have to give it gas to start the car when that's plugged in?

 

[Projectmk3]

if the over flow tank bubbles (kinda sounds like boiling water) after you turn off the engine from a long drive or after running the car hard its most likely a BHG, my old motor did the same thing after i would run, the cause was exhaust gases leaking into the coolant gallies and causing more pressure...if your coolant smells like old fuel or just plain exhaust change the head gasket

 

[PROJECT N00b]

CRE: i had to do that before i plugged in the thing back.

PMK3: ill make sure the mechanic fixes it, ill even tell him to use a MHG and ARP bolts.

 

[PROJECT N00b]

UPDATES:::::

I found out why the stupid car wouldnt downshift, the TPS was unlugged. And the coolant still foams out of the overflow tank...so i figured that i have to get a rad cap that holds more the 13lbs of pressure...any suggestions?

 

[tlo86]

UPDATES:::::

I found out why the stupid car wouldnt downshift, the TPS was unlugged. And the coolant still foams out of the overflow tank...so i figured that i have to get a rad cap that holds more the 13lbs of pressure...any suggestions?

heh a new toyota one?

 

[CRE]

Nope, if the caps is holding 13lbs, then leave it alone and find the real source of the problem. Is the car over heating at all? It's time to pressure test the system. If the system holds pressure fine then try flushing the cooling system and replacing the coolant. It's possible you're looking at the symptoms of contamination.

 

[PROJECT N00b]

Yeah, maybe it is contaminated because the coolant looks kinda dirty. I wanna know the rundown.

 

[Stretch]

If it's milky then you have problems like oil in it. Coolant should be translucent with colour. your problem is as stated before; bhg pushing exhaust gases into your coolant, causing it to push out of your overflow tank. I hope you get it fixed well and don't have to deal with it afterwards as it's a real pain in the ass trust me
eric

 

[PROJECT N00b]

UPDATE!!!

Got a new rad cap that has a lever to release pressure. Also, the mechanic did a test with some turkey baster tool and there was no exhaust gases in the coolant.