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- From: bill@hood.tandem.com (Bill Norcott)
- Subject: Re: EGR and EVP on Mercury Grand Marquis
- Message-ID: <1992Sep15.182940.9005@tandem.com>
- Sender: news@tandem.com
- Nntp-Posting-Host: hood.tsg.tandem.com
- Reply-To: norcott_bill@tandem.com (Bill Norcott)
- Organization: Tandem Computers, Inc.
- References: <1992Sep15.131348.17021@cactus.org>
- Distribution: na
- Date: Tue, 15 Sep 1992 18:29:40 GMT
- Lines: 25
-
- In article <1992Sep15.131348.17021@cactus.org>, ninke@cactus.org (Don A. Ninke) writes:
- |> I have a 1985 Mercury Grand Marquis with the 5.0L engine.
-
- <lots of stuff deleted>
- |> 1. What does EVP stand for? Maybe "EGR Valve Position" sensor?
- |> 2. What role does the EVP perform?
- |> 3. Is the EVP a passive device, like a variable resistor?
-
-
- The EVP is the EGR valve position sensor. It is a white plastic
- cap which sits on top the EGR. The EVP contains a spring loaded
- plunger that presses against the EGR diaphragm. The EGR is a
- switch not a resistor. Depending on how far the plunger is compressed
- it will touch one of the contacts spaced along the body of the EGR.
- I can't rememver if there is just one contact for wide open or maybe
- another one for partway open. The signal from the EVP is fed back
- into the EEC-IV computer as one of its inputs.
- --
- ---------------------------------------------------------------------|
- Bill Norcott GUARDIAN POSIX project
- Tandem Computers, Inc.
- 10600 N. Tantau Avenue PHONE: (408) 285-3253
- Cupertino, CA 95014 EMAIL: norcott_bill@tandem.com
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