Help! 1st Time Removing Plenum....now rough idle

[jon_d4]

Originally Posted by mike100

you can get the codes to display on the orange speedo lcd on the 90-up cars.

but my guess is that maybe a pin on the ignition module got bent trying to get that long connector on the back plugged in. Take off the map sensor bracket and get your 1/4" socket out...

So, after checking the MAP sensor vacuum, I pulled the plenum a third time to check the connector for the ignition module. I was having trouble getting to it without lifting the plenum up. All the pins on the connector look good. On the bright side, I'm getting a lot faster at removing/reinstalling the plenum....

[cvette98pacecar]

Originally Posted by jon_d4

So, after checking the MAP sensor vacuum, I pulled the plenum a third time to check the connector for the ignition module. I was having trouble getting to it without lifting the plenum up. All the pins on the connector look good. On the bright side, I'm getting a lot faster at removing/reinstalling the plenum....

Pull the water seal on the DIS plug back, I guarantee you one of the pins is pushing out when you install the plug, with the water seal pulled back you will be able to tell which pin it is within seconds. I don't remember if these pins are 100 series or not, They are easy to change if needed.
Don't cut or shorten the wire, Take your time and open the crimp connection. Sorry to tell you but the tool is special and a good GM terminal tool is going to cost you about $100.00.

[jon_d4]

Originally Posted by cvette98pacecar

Pull the water seal on the DIS plug back, I guarantee you one of the pins is pushing out when you install the plug, with the water seal pulled back you will be able to tell which pin it is within seconds. I don't remember if these pins are 100 series or not, They are easy to change if needed.
Don't cut or shorten the wire, Take your time and open the crimp connection. Sorry to tell you but the tool is special and a good GM terminal tool is going to cost you about $100.00.

Thanks for the help. My connector was okay. I checked that all the pins that had wires running to them were still present in the connector. I also checked the ignition module to make sure I didn't damage anything on that side. This is good advice, as I'll now pay extra attention to this connector each time I remove/install it.