I just put a new engine into a 03 Explorer and.

GAVINMOSHER

MEMBER
2003 FORD EXPLORER

I just put a new engine into a 03 explorer and have ran into a couple of issues. First off I am having troubles finding where the red and black vacuum lines on the passenger side plug into. Second off ontop of the throttle body is a idle air control valve. Where does the vacuum line go off of it? And finally There is a small coolant line coming off of the top heater core hose that goes by the oil filler and I have no idea where it goes from there because someone cut it. Can anyone please help me

7 Replies

HMAC300

MECHANIC
48,601 POSTS

What engine?All we can do is send a vacuum diagram if we have it

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Friday, December 7th, 2012 AT 2:27 PM

GAVINMOSHER

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Sorry about that I totally forgot! Its a 4.0 SOHC idk if it makes a differance or not because I know there are different intakes for it but this one has the throttlebody pointing toward the passenger fender

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Friday, December 7th, 2012 AT 4:59 PM

HMAC300

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Ok here is the diagram hope it helps you out. It says flex fuel bu tit is same without flex fuel.

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Friday, December 7th, 2012 AT 5:34 PM

GAVINMOSHER

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Thanks so much! Okay looking at the diagram where is the IAC located on that picture? Also is there any ideas on that small coolant line that comes out of the heater core cutting off near the oil filler neck?

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Friday, December 7th, 2012 AT 6:16 PM

HMAC300

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The iac draws it vacuum form throttle body shouldn't be aline ther I dont think. The small coolant line may go to throttle body with n in an dout next time ptake apic so you can remember where lines go. Hav eyou hooked up line to degas bottle?