Mystery tubes

[nature noggins]

I am getting my plow truck (1007 F250) ready for the winter season and noticed something hanging below. Checking it out I discovered 2 tubes, one blue and one pink. I know a little about vehicle repair but not enough to figure out where these two guys are supposed to be connected. I traced the two back to the top of the engine compartment next to the firewall behind the battery. I've included a few pictures. Any help including pictures of where they should be connected would be of great help.

 

[F150]

Typo in the year? I'll guess you mean a 1987, and those could be to part of the EGR system.

 

[F150]

Typo in the year? I'll guess you mean a 1987, and those could be to part of the EGR system. Or if that's a 2007, then you should have a check engine code to be scanned...and that's pretty rusty for an'07.

 

[Alvin in AZ]

On the underside of your hood there should be a label
with the vacuum line routing diagram. I've got three of
them and none of them show a blue line. All three of
them are different too.

All three are 351w...
'90 F250 ZF
'91 Bronco E4OD July of '90
'91 F150 SC May of '91

The black doohickey is either a TAD or a TAB solenoid.
I bet you got a code for the "Thermactor" system too.

Alvin in AZ

 

[73F100Shortbed]

They look like wires to me not vacuum lines.

 

[nature noggins]

Typo in the year... It is a 1997

 

[lil_dq]

Vac lines. IIRC they are the 4x4 actuator lines to the front diff.

 

[Alvin in AZ]

Typo in the year... It is a 1997

Did you look under the hood for -its- vacuum routing diagram?
(it's a Ford, Ford changed stuff around daily

What codes did you get?

Alvin in AZ