 Mystery Part on 73 914 with 2.0, What is it? |
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| Jesco Reient |
 Jul 23 2012, 12:34 PM
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#1
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Member  Group: Members Posts: 135 Joined: 18-July 12 From: Western Washington Member No.: 14,690 Region Association: Pacific Northwest  |
While getting my head back into the 914 I have found something I have no idea what it does, or where it really wants to be attached to. The one end went to the air distribution box as is shown in the second picture. The other two ends were just floating around the engine compartment. Could someone tell me what it is and where it goes?
(IMG:http://www.914world.com/bbs2/uploads_offsite/carphotos4.cardomain.com-14690-1343068443.1.jpg) This is the mystery part. (IMG:http://www.914world.com/bbs2/uploads_offsite/carphotos.cardomain.com-14690-1343068444.2.jpg) This is where it was hooked up. Thank you in advance John |
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| Jesco Reient |
Jul 23 2012, 12:36 PM
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#2
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Member Group: Members Posts: 135 Joined: 18-July 12 From: Western Washington Member No.: 14,690 Region Association: Pacific Northwest |
also there is another wire in the second picture that I need information on. Thanks in advance.
John |
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| SLITS |
Jul 23 2012, 12:38 PM
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#3
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None  |
It's a thermotime switch. Activates the cold start injector when the temperature is below 20 degrees F or somewhere around that area.
The "mystery" part is the deacceleration valve. Adds extra air to the intake under closed throttle operation for emission control. Also may alleviate backfiring on closed throttle operation. It also appears that the wire colors are wrong .. Solid green is auxillary heater blower Green w/ red trace is oil pressure sender wire (to gauge) Solid white is to thermotime sensor |
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| SUNAB914 |
Jul 23 2012, 01:04 PM
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#4
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Senior Member Group: Members Posts: 698 Joined: 29-December 08 From: Fredericksburg VA Member No.: 9,880 Region Association: South East States |
Its a decel valve!
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| Porschef |
Jul 23 2012, 01:11 PM
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#5
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How you doin' Group: Members Posts: 2,168 Joined: 7-September 10 From: LawnGuyland Member No.: 12,152 Region Association: North East States 
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2.0 fuel pressure regulator?
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| type47 |
Jul 23 2012, 01:27 PM
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#6
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Viermeister Group: Members Posts: 4,254 Joined: 7-August 03 From: Vienna, VA Member No.: 994 Region Association: MidAtlantic Region |
delete
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| SirAndy |
Jul 23 2012, 01:40 PM
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#7
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Resident German Group: Admin Posts: 41,688 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
QUOTE(Porschef @ Jul 23 2012, 12:11 PM)  2.0 fuel pressure regulator? No. Decel valve using air, not fuel!!! (IMG:style_emoticons/default/popcorn[1].gif) |
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| bembry |
Jul 23 2012, 04:24 PM
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#8
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Senior Member Group: Members Posts: 529 Joined: 29-July 05 From: Bakersfield, CA Member No.: 4,499 Region Association: MidAtlantic Region |
Flux Capacator?
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| JamesM |
Jul 23 2012, 04:31 PM
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#9
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Senior Member Group: Members Posts: 1,922 Joined: 6-April 06 From: Kearns, UT Member No.: 5,834 Region Association: Intermountain Region |
Mounts by the MPS, one end hooks to the air filter housing the other to the plenum. Looks like you are missing the special 90deg connector at the plenum. Allows extra air to the engine on decel, you can run without it if you have to.
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| TheCabinetmaker |
Jul 23 2012, 06:48 PM
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#10
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I drive my car everyday Group: Members Posts: 8,304 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
The decel valve mounts on the top screw for the MPS. The green wire goes to the oil pressure sender. There should also be I think a red wire to the auxiliary air regulator, and a white wire to the thermo tine switch which should activate around 39 degrees F.
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| Jesco Reient |
Jul 23 2012, 07:01 PM
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#11
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Member Group: Members Posts: 135 Joined: 18-July 12 From: Western Washington Member No.: 14,690 Region Association: Pacific Northwest |
Thanks everybody in addition to having let this car sit for 9 years, (because it had Fuel Injection issues) I had not done the prior repairs so I was very frustrated with the car. But we seem to be getting along with each other now.
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| Jesco Reient |
Jul 23 2012, 07:49 PM
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#12
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Member Group: Members Posts: 135 Joined: 18-July 12 From: Western Washington Member No.: 14,690 Region Association: Pacific Northwest |
Thanks for the heads up, I traced the wire back and found out the green wire turned into a white wire (IMG:style_emoticons/default/blink.gif) I hope the previous owner isn't an electrician.
John (IMG:http://www.914world.com/bbs2/uploads_offsite/carphotos.cardomain.com-14690-1343094560.1.jpg) |
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| TheCabinetmaker |
Jul 23 2012, 07:55 PM
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#13
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I drive my car everyday Group: Members Posts: 8,304 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
Holy crap! did that at least have a wire nut on it?
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| Jesco Reient |
Jul 23 2012, 10:51 PM
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#14
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Member Group: Members Posts: 135 Joined: 18-July 12 From: Western Washington Member No.: 14,690 Region Association: Pacific Northwest |
Nope, Just black tape, more inspecting now!! |
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