Ignition wire test procedure? Misfire #1 PO301 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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.

Reply
 
 
 
Thread Tools Search this Thread
Old 06-15-2009, 01:40 PM   #1
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Feb 2009
Posts: 30
Thanks: 0
Thanked 0 Times in 0 Posts
96Bonne124 is on a distinguished road
Default Ignition wire test procedure? Misfire #1 PO301

96 Bonne SE Vin K
Codes
PO301 Cylinder #1 Misfire
PO140 02 Sensor CKT no activity bank1; sensor 2

Is this the correct way to test the ignition wire?

I'm testing resistance on the Cylinder #1 wire and get no change on the digital multimeter. Multi-meter reads OL (open).

I pulled #3 cylinder wire off also and tested it and I get the same reading OL. I thought I get resistance off the second wire as there were no codes for this cylinder.

My procedure was to place one end of test lead into the coil end of ignition wire and the other multimeter lead into the plug end of the wire. I've even take a piece of copper wire and placed it into the plug end as I thought the mult-meter test lead may not have bottomed out.

Are the mult meter leads supposed to just touch the bottom of the ignition wire and not the sides?

Thanks
96Bonne124 is offline   Reply With Quote
Old 06-15-2009, 02:41 PM   #2
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

You should be touching the metal connection inside the boot of the plug wire.

A code like this would send me to check the following. Ohm test the two posts of the coil to ensure one post did not go bad. The average reading is about 5.5 to 7.0 ohms when touching both posts of the same coil.

Checking the wire like you are

Check the plug. Plugs can crack, the end if screw on can come loose etc.

As for the O2, check the wirining to your rear O2 that is the one behind that catalytic converter.
BillBoost37 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
ignition misfire...codes? c0rsa180 1992-1999 13 06-04-2006 03:29 AM
Electrical Wire Wrap / Wire Looms Xac Xado Detailing & Appearance 3 07-28-2005 05:20 PM
ignition misfire (studdering) problem BonEvilSSEi General GM Chat 0 01-20-2005 08:00 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 12:22 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.