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Engine Specific Info and Questions => IDI Engine => Topic started by: stewardc on May 04, 2007, 01:50:25 pm

Title: Pump question.
Post by: stewardc on May 04, 2007, 01:50:25 pm

I really don't know what that diaphram thing does  up by the aneroid housing?. The engine/pump are from a Passat. Here are detail pics, can anyone tell me what it does? (NOTE: Giles Pump now in stealth semigloss black)

(http://img.photobucket.com/albums/v648/stewardc/Truck/100_4704.jpg)
(http://img.photobucket.com/albums/v648/stewardc/Truck/100_4707.jpg)
(http://img.photobucket.com/albums/v648/stewardc/Truck/100_4705.jpg)

Title: Pump question.
Post by: lyeinyoureye on May 04, 2007, 02:02:13 pm

Isn't that the cold start advance?  :?

Title: Pump question.
Post by: stewardc on May 04, 2007, 02:20:08 pm

Quote from: lyeinyoureye

Isn't that the cold start advance?  :?

I think cold start is below that.

Title: Pump question.
Post by: zukgod1 on May 04, 2007, 02:21:16 pm

Is it a turbo engine?

By aneroid are you referring to the top of the pump?

It's either a boost compensator if a turbo engine or a high alt compensator if NA.


dan

Title: Pump question.
Post by: jtanguay on May 04, 2007, 02:27:12 pm

it almost looks like something for cruise control... can't really tell what it is connected to though...

tell us what part it is connected to and we might be able to find out :)

Title: Pump question.
Post by: stewardc on May 04, 2007, 02:48:21 pm

The cable from it goes through the arm pictured and has a "collar" bolted to the cable to allow the diaphram to pull on the lever....I think. It can only pull the lever a little over 1/4 inch.

Title: Pump question.
Post by: foxracer1 on May 04, 2007, 05:00:43 pm

Looks like something to up the idle. Maybe somethin for A/C?

Title: Pump question.
Post by: 935racer on May 04, 2007, 05:25:31 pm

Thats a mechanical cold start accelerator. I think it keeps the timing plunger from from advancing before a certain engine speed. That one appears to be vacuum actuated.

Title: Pump question.
Post by: stewardc on May 05, 2007, 04:02:06 am

Quote from: 935racer

Thats a mechanical cold start accelerator. I think it keeps the timing plunger from from advancing before a certain engine speed. That one appears to be vacuum actuated.

So it is independant of the normal cold start lever at the bottom of the pump???

Title: Pump question.
Post by: foxracer1 on May 05, 2007, 07:34:03 am

It looks like it is hooked up to the same place the cold fast idle linkage is on some pumps. All the timming stuff is down low in the pump.

Title: Pump question.
Post by: ricosuave on May 05, 2007, 08:30:25 am

looks good painted like that! :lol:

Title: thingy
Post by: soryu2222 on May 08, 2007, 05:06:27 pm

i am pretty sure that is idle speed boost for a/c