1987 88spl

[wt van metre]

Hey guys got a 1987 88spl.. when i turn key off engine keeps running.. i know could be switch or power pack.. question is when i turn key to off rpm's drop off..when i turn key back to on they rpm picks up. My engine has two power packs can one power pack cause this problem.. and when i turn it to off and the rpm drops.. i think one pack is grounded off and the other is not.. does this sound right.. before i order a switch .. thanks for any input..

 

[wt van metre]

Bump

 

[interalian]

Check the 4 pin connector on each power pack's engine-side connector. One wire (BK/Y) should be grounded when the key is off. If you have ground on both, suspect the pack, but make sure the pack ground is intact too.

You can use a timing light to see which side stays sparking when you have the key off. If true, you can swap the packs to see if the problem follows.

 

[wt van metre]

Just checked power packs port side good.. starboard side show open circuit with key off at ...396 ohms. And 1.963 with key on. Ground wire in excellent shape. So I just ordered power pack. Thanks Interalian. For your help..

 

[interalian]

Did you make your measurement with the pack plugged in? Or at the connector on the motor side with the pack unplugged? If so, check the wiring to the connector.

 

[wt van metre]

Checked it with it unplugged on the motor side..and I just did a visual on wires going to timer base they look good.. is that what u were talking about.. thanks for your time

 

[wt van metre]

Question sir. With power pack completely off and disconnect . And the key off I still show .183 and with the key on 1.123 ohms.. I would think that it should show a complete circuit on the engine side of the plug.. when the key is in off position.. since the power pack isn't in play.. does that sound right.. thanks

 

[interalian]

What I'm saying is you would be measuring for ground at the motor side of the connector. The BK/Y wire should be grounded only when the key is off, otherwise open circuit. This should be the same exact reading for both connections since they both come from the same terminal on the big red plug.

 

[wt van metre]

I do not have that. Port side shows grounded. In key off position but the starboard side show open. So I am thinking bad wire between plug and big red plug. My question is where does to 2 sides tie together. I am guessing big red pulg.. thanks for all your help.. what sucks motor runs great on a fresh rebuild got about 15 hrs on it..