Re: Over drive won't work

Posted by HH56 On 2012/4/17 13:36:48

Don't recall an R9 flow chart from Packard but will look in a couple of aftermarket books. Here is a training manualhttps://www.packardinfo.com/xoops/html/downloads/EconoDriveTrainingBook.pdf which has a troubleshooting section.

The governor would have two wires but one is unused with no Electromatic. Make sure the correct wire is connected. With car sitting, one will be shorted to ground and one not. The OD uses the one not shorted to ground.

Your solenoid should have 4 wires if an R9 and one completes the light circuit. If only two wires, then an R11 and no light. Many 22nd R9s were upgraded to R11s in a program Packard had after R11 introduction. Verify which you have for sure. Those upgrades would still have the light but just doesn't function any longer.

Easiest way to tell without crawling under is look at relay on firewall. R9 is about the size of a voltage regulator with 6 terminals, R11 about half that size with 4 wires and a fuse on the side.