 Relay board, Doesn't look right |
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| Coondog |
 Jun 6 2016, 11:17 AM
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Advanced Member  Group: Members Posts: 2,089 Joined: 24-September 15 From: Apple Valley Calif Member No.: 19,195 Region Association: Southern California 
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Still trying to figure out barely running 75 1.8 L jet blues
Looked at relay board and found missing rear window defogger fuse which is no big deal but also saw missing power supply relay fuse ???? Unknown what this is for. Then unknown yellow wire.  |
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| Jason74914 |
Jun 6 2016, 07:41 PM
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Member Group: Members Posts: 76 Joined: 9-January 16 From: Dallas Member No.: 19,544 Region Association: None |
Timothy,
I know you are the FI guru, but my 18.L L-Jet has the Power Relay. It is one of the items to check on Bowlby's fuel pump diagnostic checklist. Mostly, to check for Relay Board operation. If it is not needed for L-jet, why is it there? Jason |
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| ClayPerrine |
Jun 6 2016, 08:05 PM
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Life's been good to me so far..... Group: Admin Posts: 16,089 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille
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QUOTE(Jason74914 @ Jun 6 2016, 08:41 PM)  Timothy, I know you are the FI guru, but my 18.L L-Jet has the Power Relay. It is one of the items to check on Bowlby's fuel pump diagnostic checklist. Mostly, to check for Relay Board operation. If it is not needed for L-jet, why is it there? Jason The 914 was designed with the D-Jet system in mind. When they started using the L-Jet, they adapted the setup from the one on VWs. It had the double relay, so they continued to use it. The L-Jet system evolved into Motronic, and the double relay became the DME relay. The yellow wire in the picture is to tell the double relay that the starter is engaged. It appears to be hooked up correctly. On the L-jet 914, you do not need any of the relays or fuses on the relay board to get the engine to run. |
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Posts in this topic
Coondog Relay board Jun 6 2016, 11:17 AM
timothy_nd28 Yellow wire goes to the starter Jun 6 2016, 11:21 AM Coondog Thanks, tach bounces when I get can get it to rev ... Jun 6 2016, 11:37 AM timothy_nd28 most of them do, the dielectric in the 40 year old... Jun 6 2016, 11:53 AM Coondog What is the power relay fuse used for ?? Jun 6 2016, 01:09 PM timothy_nd28 not used in your application. Ljet systems have t... Jun 6 2016, 03:12 PM Coondog Thanks again Jun 6 2016, 04:59 PM timothy_nd28 It's good to question, let me show you the pat... Jun 6 2016, 09:17 PM Jason74914 Huh, very interesting! Sure makes diagnosis m... Jun 6 2016, 09:28 PM timothy_nd28 Electrically, the two rear ports are the same. Lo... Jun 6 2016, 09:33 PM Jason74914 I may have answered my own question. Looks like o... Jun 6 2016, 09:34 PM
Jason74914
I may have answered my own question. Looks like ... Jun 6 2016, 09:35 PM timothy_nd28 Coondog: I would concentrate on the ignition side... Jun 6 2016, 10:14 PM malcolm2
Consider installing a [b]electronic ignition modu... Aug 10 2016, 08:42 AM Jason74914 Timothy,
Car sat for a few years. After draining ... Jun 7 2016, 05:35 PM Dave_Darling Try unplugging the black/purple wire that goes fro... Aug 10 2016, 02:50 PM oakdalecurtis Not sure if you fixed your electrical issues yet, ... Aug 10 2016, 04:45 PM |
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