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1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 06-22-2005, 01:52 PM   #1
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I was having issues with some sparatic loss of power with the engine light coming on then going off and then the car would run normal, better anyways. I whined about it a couple of times http://www.bonnevilleclub.com/forum/...031&highlight=
http://www.bonnevilleclub.com/forum/...420&highlight=

Well it started acting up BAD while the misses and I were out on a date saturday night. It was time to put this problem on lock down. In fear of running into the same punk arse who couldnt pull codes for me at autozone I went to advance auto. Still no codes and the scan tool was not connecting to the pcm? This went as far as a few advance auto guys giving it a whirl. One guy noticed my aftermarket hu and asked if I grounded it right? This did get me thinking about drilling those holes next to the engine wire harness under the maxi fuse panel. And I did use the maxi fuse connection for my power for the HU.

I looked up the obd diagnosis in my fsm and it has some steps with a test light to see if the plug is getting power. I'm going to try this tonight after work. If I somehow shorted out the connection would it blow some fuse? If the check engine light is working the pcm must be working right? I'm clueless with the whole obd system. The only thing I've looked at so far is corrosion on the plug and there isnt a speck of it. Any input would be cool.

Now for the good news . When I was pulling in my driveway from advance auto all depressed my car started acting up again . So I pulled into my garage and left it running . When I popped the hood it sounded like a bunch of kids playing with bubble wrapping. I pinpointed the noise from behind the engine and SPARKS were shooting out of the middle back plug. After letting the engine cool I reached back there and grabbed the plug and that damn wire was looser then my first girlfriend. I put in on, quadrupled checked it and the others.
Its running fine now My fault. What the hell is the purpose of those little metal shield things with the springs anyways? Should I check that sparkplug?

The pcm connection is really a huge problem for me in NY. To pass inspection they hook up to this. This started in 05 and the car was inspected in march (when I got her). The dealer is reputable so I'm sure the data link worked then. The car is running effortlessly now. I guess I have 9 months to tinker with this before inspection is due.
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Old 06-22-2005, 02:01 PM   #2
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Congrats on your plug wire problem. Glad to hear that.

They can't connect to your PCM? I'm assuming this is the 98 that you have as your member name. Do you have an FSM so you can check to see what diagnosis is available for the connector?
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Old 06-22-2005, 02:17 PM   #3
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I have the FSM. It has a blowup of the connector. It also tells me what to test with a test light, using chassis ground and using a power source. going to do that tonight. Yes it is a 98se
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Old 06-22-2005, 02:21 PM   #4
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Great, sounds like you are off and running. Best of luck.
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