Did I Fry my EVR plus 1 question
#1
04-05-2015, 05:56 PM
Did I Fry my EVR plus 1 question
My original EVR had 148.5 Ohms resistance, which was way too high per Haynes (20 to 70 Ohms per spec) and I could not get the EVR to hold a vacuum per the Haynes manual (which is wrong). So I bought a new EVR that is also no good.
My question is: Did I fry my original EVR and the new one too? I checked it according to the Haynes manual. First I checked for voltage to the EVR and got 10.12v. Next I checked resistance and got 148 Ohms. Then per Hayes I attached a 12v source ( I used jumper from the battery) then a ground jumper ( I used battery ground) With vacuum gauge attached to outlet port and vacuum pump attached to inlet port I attached the ground lead and quickly pulled vacuum. I got no vacuum at outlet. Did using battery voltage direct from battery allow too much amperage and I burned off the coil wire off at the pin? The time connected was about 4 seconds. When I did this on the bad unit that I took apart later it got really hot within 4 seconds. Should this test be done with a fuse inline? I’m just trying to figure out why the wire from the EVR pin to solenoid coil burned off on my original and I think the new one too, as a check it before install the same way and now it too has .9 Ohms (on digital meter or 0 on old analog type) resistance.
My question is: Did I fry my original EVR and the new one too? I checked it according to the Haynes manual. First I checked for voltage to the EVR and got 10.12v. Next I checked resistance and got 148 Ohms. Then per Hayes I attached a 12v source ( I used jumper from the battery) then a ground jumper ( I used battery ground) With vacuum gauge attached to outlet port and vacuum pump attached to inlet port I attached the ground lead and quickly pulled vacuum. I got no vacuum at outlet. Did using battery voltage direct from battery allow too much amperage and I burned off the coil wire off at the pin? The time connected was about 4 seconds. When I did this on the bad unit that I took apart later it got really hot within 4 seconds. Should this test be done with a fuse inline? I’m just trying to figure out why the wire from the EVR pin to solenoid coil burned off on my original and I think the new one too, as a check it before install the same way and now it too has .9 Ohms (on digital meter or 0 on old analog type) resistance.
Thread
Thread Starter
Forum
Replies
Last Post
Christof13T
1999 - 2003 7.3L Power Stroke Diesel
5
11-26-2012 09:55 AM
TOW II
1983 - 2012 Ranger & B-Series
12
06-02-2010 11:12 PM
