 AAR revisited |
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| lsintampa |
 Sep 28 2013, 07:32 AM
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#1
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Senior Member  Group: Members Posts: 520 Joined: 28-January 13 From: Tampa, FL Member No.: 15,441 Region Association: South East States  |
A while ago, I fried my ignition wiring. At that time, I thought that my AAR valve was shorted, but in hind site, I'm not totally sure that was the case.
Is there some way to test the AAR valve for shorts? Thanks, Len |
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Replies(1 - 4)
| Java2570 |
Sep 28 2013, 08:14 AM
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#2
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Senior Member Group: Members Posts: 649 Joined: 7-May 11 From: Fishers, IN Member No.: 13,035 Region Association: Upper MidWest |
Len - I believe that taking a resistance reading you should get approx. 14 ohms....
thats + lead to AAR connector and - grounding on case of AAR. If you have a problem in the wire you should have a higher ohm reading. I know I fritzed out my old one in a similar way and testing it got a reading of about 36 ohms. Plus, my reading varied quite a lot when I moved the wire around during testing. You should also verify that you are getting 12 V from the wiring harness.... |
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| lsintampa |
Sep 28 2013, 08:20 AM
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#3
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Senior Member Group: Members Posts: 520 Joined: 28-January 13 From: Tampa, FL Member No.: 15,441 Region Association: South East States |
QUOTE(Java2570 @ Sep 28 2013, 10:14 AM)  Len - I believe that taking a resistance reading you should get approx. 14 ohms.... thats + lead to AAR connector and - grounding on case of AAR. If you have a problem in the wire you should have a higher ohm reading. I know I fritzed out my old one in a similar way and testing it got a reading of about 36 ohms. Plus, my reading varied quite a lot when I moved the wire around during testing. You should also verify that you are getting 12 V from the wiring harness.... I think what happened to me was that the +12 going to the AAR went right to ground via the case. Should there be continuity between the + lead and the case? (reveal - I know nothing about electronics) (IMG:style_emoticons/default/unsure.gif) |
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| 76-914 |
Sep 28 2013, 08:32 AM
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#4
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Repeat Offender & Resident Subaru Antagonist Group: Members Posts: 13,505 Joined: 23-January 09 From: Temecula, CA Member No.: 9,964 Region Association: Southern California 
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but you already know this one. voltage is always looking for a ground. you've got +power to it. it's going somewhere. it's on a path to ............
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| TheCabinetmaker |
Sep 28 2013, 09:08 AM
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#5
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I drive my car everyday Group: Members Posts: 8,300 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
remove the unit and stick it in the freeze for 15 minutes.
can you blow thru it? If so, its open. Hook the lead to 12V, and ground the case. I use a batterycharger. If it heats up and closes,its good. Normally, the lead shorting to ground will just blow the fuse on the relay board and render it and the fuel pump inoperative. |
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