Vacum pipe help

[Leytrico]

Can someone tell me were this vacum pipe goes connected

 

[nocfn]

My assumption that is on the transmission. That would go to the modulator, the other end is on the rear intake near the firewall.

 

[gerryvz]

Correct. It goes to the rear part of the intake manifold.

 

[Leytrico]

Can u show me exatly were can seem to fine it

 

[Leytrico]

We're does it go here

 

[gerryvz]

The line from the transmission modulator goes on the rear-most vacuum nipple on the passenger side, as shown below.

 

[Oldcar]

Is this the trans modulator line?

 

[gsxr]

Is this the trans modulator line?

Yup.

 

[Oldcar]

Is there any vacum line that goes to or is used by the base module

 

[gsxr]

Is there any vacum line that goes to or is used by the base module

Absolutely not.

The only vacuum line that connects to ANY of the powertrain modules/computers is to the EZL. The manifold vacuum data is transferred via CAN bus to other modules.

The Basic Module / General Module (BM/GM) is a fancy power supply for the other modules, along with the function of the OVP and KLIMA relays which were eliminated. The OVP, KLIMA, and power supply functions are all combined into the BM/GM.

 

[Oldcar]

So vacum leaks cause BM and LH to adjust for a lean condition and screw things up correct?

Can BM/ LH get vacum data from any other source

 

[gsxr]

So vacum leaks cause BM and LH to adjust for a lean condition and screw things up correct?

A large vacuum leak could cause the LH to adjust the mixture slightly, which over time would affect adaptation values. A small leak probably would do nothing.

The BM has nothing to do with mixture formation.

Can BM/ LH get vacum data from any other source

Nope. Only the EZL receives a vacuum signal, and will adjust ignition timing slightly.

 

[Oldcar]

That's good news ! There are so many other old lines that are hard to access.

Thanks!