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04-03-2010, 08:52 PM
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#1 | |
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AF Regular
Join Date: Mar 2009
Location: Phoenix, Arizona
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Name the parts
1985 Caprice 305 4BBL Carb
Hi all, I have searched the forums as well as my shop manual without success. In the first image I am pointing to something that connects to a port on my EGR (this whole assembly attaches to the engine near the distributor by the EGR valve). Is this some kind of servo that activates/deactivates the EGR? Or a sensor? Also (in the same image) What sensor is above where I am pointing? Is this the MAP (manifold vacuum) sensor? -- There is also another sensor like this that looks to be the exact same that sits on my passenger-side wheel well. Is the wheel-well mounted one the engine vacuum sensor? Does "manifold vacuum" mean "engine vacuum"? -- I am very confused... And of course the BARO sensor is in the car near the glove box I believe. Why are there three sensors total that can sense vacuum or air pressure? I thought only Barometric pressure and an Engine Vacuum sensor were needed for the ECM. The next image shows some component that attaches near the heater core I think. Is this the fast-idle relay? (this is driving me crazy). (The big circle shows the component and the small shows a couple of the wires that go to it). I'm pretty sure that the A/C cut-off switch does not go to this component (which leads me to believe it is something else). I know a big-gauge red wire goes to it, a blue wire, brown wire, and two black wires and another color that I do not recall. The large red wire looks like it may lead to the firewall (then to the steering column I would guess?). I appreciate your help and sorry for the long post.
__________________
1985 Chevy Caprice small-block V8 305ci (5.0L) - 4-Barrel Q-Jet (E4ME) - 700R4 - 115k+ mi. - resonator and A/C components deleted. Driven in severe weather most of the year (Arizona 100+ degrees during summer heat or in wet weather especially in harsh monsoons). About 30/70 highway/city driving. |
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04-03-2010, 09:50 PM
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#2 | |
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Confoundingly Lucid
Join Date: Oct 2005
Location: Mesa, Arizona
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Re: Name the parts
#1. EGR solenoid.
#2. Blower motor relay. The one on the wheel well is the BARO sensor, the one on the bracket in the picture is the MAP sensor.
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1988 9C1 - Modified LM1 @ 275HP/350TQ - TH700R4 - 3.08 8.5" Disc Rear - see it at http://www.silicon212.org/9c1! 2005 Crown Vic P71 - former AZ DPS - 4.6 liters of pure creamy slothness! 1967 El Camino L79/M20 old school asphalt raper Remember - a government that is strong enough to give you everything you need, is also strong enough to take everything you have. |
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04-07-2010, 05:50 PM
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#3 | |
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AF Regular
Thread starter
Join Date: Mar 2009
Location: Phoenix, Arizona
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Re: Name the parts
Thanks silicon, would you happen to know where the fast-idle relay is?
Also, the one on the wheel well takes its reading from the lowest part on my carb. And the one (1st picture) with the EGR solenoid attached takes vacuum from the same bottom-part but the back side of the carb.
__________________
1985 Chevy Caprice small-block V8 305ci (5.0L) - 4-Barrel Q-Jet (E4ME) - 700R4 - 115k+ mi. - resonator and A/C components deleted. Driven in severe weather most of the year (Arizona 100+ degrees during summer heat or in wet weather especially in harsh monsoons). About 30/70 highway/city driving. |
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