Vacuum leak somewhere after heater core hose replacement

[Brax93]

OK i just replaced my leaky heater core hoses and when I get done there is a vacuum leak....probably from working behind the intake manifold (420a BTW).... I tried carb cleaner not really working... also tried smoke which helped some... had smoke come through the TB spring and IAC so swapped the TB and still the problem .... i capped the 3 vaccum ports on the left still leaking... then for the PVC port and the port on the TB on top.... so im kinda confused also injectors seem fine sprayed with carb and no diffrence in idle..... no egr... and i got the code evap leak (large leak) which im assuming is tied in but still cant find the leak.... trying to give all the info i can...... its very rough idle...like going to die then back up again so im assuming it pretty decent leak just idk i feel like i looked and tried everything..... so any ideas greatly appreciated!

 

[1G Eclipse94928]

OK i just replaced my leaky heater core hoses and when I get done there is a vacuum leak....probably from working behind the intake manifold (420a BTW).... I tried carb cleaner not really working... also tried smoke which helped some... had smoke come through the TB spring and IAC so swapped the TB and still the problem .... i capped the 3 vaccum ports on the left still leaking... then for the PVC port and the port on the TB on top.... so im kinda confused also injectors seem fine sprayed with carb and no diffrence in idle..... no egr... and i got the code evap leak (large leak) which im assuming is tied in but still cant find the leak.... trying to give all the info i can...... its very rough idle...like going to die then back up again so im assuming it pretty decent leak just idk i feel like i looked and tried everything..... so any ideas greatly appreciated!

the manual should have the diagrams if you can get your hands on it.

 

[Brax93]

Also got the coolant sensor voltage low so that might have to be something and also the fan turns on as soon as i turn the car on and i dont think its suppose to do that......


Update: well i just unplugged my coolant sensor and one wire was broke and the other broke when i was lookn at the connection so im going to try and wire the connection up and see if that was my problem...

Question: what side of the coolant temp. sensor (ECT) is positive left or right so i can wire the connector right?

 

[eclipserst96]

It depends on which way you're looking at it(the wires on the plug).

 

[BoostforBreakfast]

you purge the air out of your coolant?

 

[Brax93]

yeah I let the air out of the coolant... it was the coolant temp sensor... I wired it up again and the problem quit but when i was trying to wire it the connector broke so just the 2 pins are on until i got get a pigtail for it at the junkyard or something.