HELP - EVR / EGR Problems ?
Freshman User
Joined: Sep 2003
Posts: 30
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From: Texas
Originally posted by dbuck50
anybody got a picture of that black box, I still can't see it. Could it be missing and still plug in?
anybody got a picture of that black box, I still can't see it. Could it be missing and still plug in?
Freshman User
Joined: Sep 2003
Posts: 30
Likes: 0
From: Texas
Originally posted by HardScrabble
My 1990 Mitchell manual give the following resistances for the EVR solenoid:
4.9 and 5.8 under 8500 GVW - 20-45 ohms
7.5L 100-135 ohms
All others 30-70 ohms
It just says disconnect the EVR connector, doesn't mention the black box. I wonder if the solenoids are the same and the variation in resistance comes from different black boxes.
My 1990 Mitchell manual give the following resistances for the EVR solenoid:
4.9 and 5.8 under 8500 GVW - 20-45 ohms
7.5L 100-135 ohms
All others 30-70 ohms
It just says disconnect the EVR connector, doesn't mention the black box. I wonder if the solenoids are the same and the variation in resistance comes from different black boxes.
Postmaster
Joined: Aug 2000
Posts: 3,312
Likes: 1
From: Eldorado Ca. USA
Out of curiosity, when you guys say you check your vacuum lines, do you check them by applying vacuum to them and blocking off the other end, making sure the line holds vacuum? I used to do this only, till I found out that one of the lines was acutally plugged (It p****d me off too, cost me $$$ at the stealership for a "I dunno whats wrong with it" diagnosis, "But I will be happy to keep looking at it for you, but it will bring your bill to $666")
Anyways, make sure the lines arent plugged and that your can of peaches holds vacuum too.
Anyways, make sure the lines arent plugged and that your can of peaches holds vacuum too.
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New User
Joined: Sep 2003
Posts: 13
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For those of you who bought this at your Dealer, did you have the same experience I am having ?
The folks in the Dealer Parts Department have no idea what this thing is. I even faxed one of Dealers I called a picture of it out of my manual and they couldn't find it in their books.
When I get a minute I'm going to pull the EVR off the truck and see if I can get a part number from it.
pain in the A@#
The folks in the Dealer Parts Department have no idea what this thing is. I even faxed one of Dealers I called a picture of it out of my manual and they couldn't find it in their books.
When I get a minute I'm going to pull the EVR off the truck and see if I can get a part number from it.
pain in the A@#
Senior User
Joined: Dec 2000
Posts: 100
Likes: 0
From: Sacramento, CA
Hardscrabble;
does that Mitchell manual have vacuum diagrams too? Whats the full name of the manual-where's it available?
MGiven:
EVR # E63Z-9J459-A
"CONTROL VALVE" FoMoCo Part
does that Mitchell manual have vacuum diagrams too? Whats the full name of the manual-where's it available?
MGiven:
EVR # E63Z-9J459-A
"CONTROL VALVE" FoMoCo Part
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My symptoms of a bad EVR were poor Idle, stumbling off-idle, stalling when put into gear, and a CEL light. My EVR soleniod was stuck open, the EGR is fine itself. Disconnected the vacuum to the EGR, Everything returned to normal.
Senior User
Joined: Dec 2000
Posts: 100
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From: Sacramento, CA
Im gonna try and post a picture of the EVR- is this what you have joeychuck?
EVR Control Valve - Sends vacuum to EGR Valve per the computer. Note vacuum conections at bottom of EVR - Red source vacuum, green to EGR Valve. Big Orange wire is from coil. Located near driver side firewall next to valve cover.
https://www.ford-trucks.com/user_gal...oid=25058&.jpg
EVR Control Valve - Sends vacuum to EGR Valve per the computer. Note vacuum conections at bottom of EVR - Red source vacuum, green to EGR Valve. Big Orange wire is from coil. Located near driver side firewall next to valve cover.
https://www.ford-trucks.com/user_gal...oid=25058&.jpg
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New User
Joined: Sep 2003
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Chrisbeery,
Thanks for the pic. Funny, mine is mounted the other way (with the gray valve pointing down) and my vacuum lines are green and white (white source / Green EGR positon sensor).
It also looks like you do not have the "black box" in between your EVR and the wiring harness connector. That is odd.......
Thanks for the pic. Funny, mine is mounted the other way (with the gray valve pointing down) and my vacuum lines are green and white (white source / Green EGR positon sensor).
It also looks like you do not have the "black box" in between your EVR and the wiring harness connector. That is odd.......
Temporarily Deactivated
Joined: Aug 2003
Posts: 1,859
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I am not sure where you can get a manual like this, I got it from eBay for $10 - a steal. It is named:
Chrysler Motors
Ford Motor Co.
General Motors
Jeep
1990 Domestic Light Trucks & Vans Service & Repair
Engine Performance
Electrical
Engine
Chassis
ISBN 0-8470-0403-1
This book has wiring and vacuum diagrams. What I find most valuable are the Tests and Flowcharts of how to pursue the trouble codes. This is a big book, probably well over 1000 pages. If I had to buy it new I am sure I would choke on the price.
Chrysler Motors
Ford Motor Co.
General Motors
Jeep
1990 Domestic Light Trucks & Vans Service & Repair
Engine Performance
Electrical
Engine
Chassis
ISBN 0-8470-0403-1
This book has wiring and vacuum diagrams. What I find most valuable are the Tests and Flowcharts of how to pursue the trouble codes. This is a big book, probably well over 1000 pages. If I had to buy it new I am sure I would choke on the price.
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New User
Joined: Sep 2003
Posts: 13
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chrisbeery,
Thanks for the part #..... !
I ran out at lunch and picked one up at the Ford Dealer. Ran home, threw it in and there is definately a differance ! You can tell it is working because now when I pull the vacuum off the EGR and hold my finger over it, I can feel the vacuum pulse. Where as before I had nothing at all...
Now I just need to replace the rear main seal and check for a head gasket leak..... hopefully that will hold me over for a while !
Thanks for the part #..... !
I ran out at lunch and picked one up at the Ford Dealer. Ran home, threw it in and there is definately a differance ! You can tell it is working because now when I pull the vacuum off the EGR and hold my finger over it, I can feel the vacuum pulse. Where as before I had nothing at all...
Now I just need to replace the rear main seal and check for a head gasket leak..... hopefully that will hold me over for a while !
