01-04-2007, 03:43 AM
meaning a random or unspecificed misfire with no cyl in particular ID'd.
Got that one this evening after a rough start (weathers been weird the past week or so). Engine eventually smoothed out then the CEL came on.
Everything runs fine, accelleration and 'smoothness' is as usual.
Since I don't have any other codes, and in particular no cyl-specific codes, can I write this one off to bad karma and just clear the codes out next chance I get?
Last edited by '98-ESer; 01-04-2007 at
01-04-2007, 03:54 AM
Sorry bro, all I can recomend is coils/dist./plugs. :(
P.S - 300 = Random/Multiple Cylinder Misfire Detected
As much as I hate it, try a stealership?
01-04-2007, 10:32 AM
clear the code and give it a shot,, if it pops back up try the plugs etc,, but if its running smooth and the light is not flashing you got nothing to loose
01-04-2007, 10:40 AM
Multiple misfires, not indicating any specific cylinders and I'm thinking something central, that would affect all cylinders, like a fuel system problem.
Dr. Dodge is right I think. Clear the codes and see if it happens again. maybe it was a fluke thing, something wet under the hood perhaps.
01-04-2007, 11:22 AM
When you try to clear the codes I think you may want to pull the computer fuse from the main fuse box under the hood instead of disconnecting the neg battery cable. I think I read that here recently that it is not preferred to pull the cable to reset the codes but do the comp fuse for same effect
01-04-2007, 04:47 PM
Join Date: Oct 2006
Kansas City Metro
Model: Motorsports Edition
Try clearing the codes, if it pops back up start cheap and just go from there.....
01-04-2007, 05:13 PM
On a 98, which of the underhood fuses is for the PCM? There is a 40 amp fuse labelled IGN RUN, another 40 for IGN/RUN, and a 20 for INJ/COIL.
01-04-2007, 06:03 PM
For the fused B+ to the PCM it's Fuse "N"(30a) in the PDC.
For the fused B+ to the TCM it's Fuse "Q"(20a) in the PDC
01-04-2007, 06:09 PM
Yah, I saw your earlier posts on the letters Ronbo.
How do I tell which fuse is Q, N, or even W??
01-04-2007, 06:51 PM
Isn't there a diagram on the inside of the PDC cover? I beleive they're all labeled under there. I'll go look at my 2000 R/T one
01-04-2007, 07:01 PM
Just looked...the fuses aren't labeled by letter under the PDC cover. The TCM fuse is labeled and I believe the PCM one might be labeled ASR as it feeds that relay also. The ASR fuse N will be one of the square ones and the TCM is one of the rectangular ones closest to the passengers fender.
01-05-2007, 06:13 PM
Yup, that was the one. Many thanks!
And just to collect all the key words into one post....
BCM codes clear pull fuse ASR ASD relay PDC
may not post new threads
may not post replies
may not post attachments
may not edit your posts
HTML code is
Powered by vBulletin® Copyright ©2000 - 2014, vBulletin Solutions, Inc.