• PLEASE READ >>> Accounts Security Locked

    The link above goes to a thread in the Announcements - Help - Testing section of the forum....you are welcome to follow normal menu structure and find it there. ~woody

Help! Lost #2 cylinder

Joined
Oct 31, 2003
Messages
419
Location
E. Washington
Guys at autozone threw the code reader on my rough riding '99LC today and said my #2 cylinder wasn't working. What could it be? Plug? Wires? How do I trouble shoot? He was talking about pulling the plug out and seeing if it would fire. I know you can do this with spark plugs, but my knowledge on these new fangled high tech rigs is limited at best. Is this something I can trouble shoot and fix or should I just bite the bullet and take it to the dealer?

Thanks,
Jeremy
 

MoJ

Proven source of misinformation
Moderator
Joined
Oct 24, 2003
Messages
4,327
Check that both ends of the plug wire is secure. How long/many miles has it been since you've replaced the plugs?
 
Joined
Oct 31, 2003
Messages
419
Location
E. Washington
I've had the rig for the last 10k or so and never replaced the plugs. I guess I'll go yank it off and see what it looks like. The #2 plug is the front passenger one right?
 
Joined
Nov 26, 2003
Messages
759
Location
Frankfort, KY
On my 80 the plug wires are numbered. I would assume they are the same on the 100 but I haven't even had the engine cover off of mine yet.
 
Joined
Jan 16, 2006
Messages
162
Location
Albuquerque, NM
Cyl 2

Herky said:
I've had the rig for the last 10k or so and never replaced the plugs. I guess I'll go yank it off and see what it looks like. The #2 plug is the front passenger one right?

Yes, front pass. side. How many miles on it? Could be a loose connector from previous starter contact job or coil removal. I broke a couple of the brittle plastic clips for the injector connectors when removing the intake manifold.

Fault code Cyl. #2. Was it "P0303" cylinder not firing? If it's not the sparkplug, then check to see if the coil has cracks or shows signs of tracking. Swap #2 coil with #4 coil, clear the CEL code by temporarily disconnecting the battery, and see if it throws another CEL, P0305 meaning the original #2 coil is bad.

Put a stethoscope on the injector while it's running and see if it's clicking or if the loudness of the clicking compares to the other injectors. A quiet injector is not healthy.

If none of the above, switch sparkplug #2 with #4 to see if the fault follows the sparkplug.
 
Joined
Jan 16, 2006
Messages
162
Location
Albuquerque, NM
more . . .

If the #2 coil is bad, the EMU will most likely automatically shut off the #2 injector to keep from washing the cylinder down with raw gas, so if #2 injector is quiet, it doesn't necessarily mean it is bad.
 
Joined
Oct 31, 2003
Messages
419
Location
E. Washington
A coil pack was the culprit. I need to get a manual for this thing so I can so some more work on it. I had them replace it and clean the throttle body but said no to the $215 spark plug job. I think I can manage that without a picture.
 
Joined
Feb 23, 2005
Messages
1,081
Herky said:
A coil pack was the culprit. I need to get a manual for this thing so I can so some more work on it. I had them replace it and clean the throttle body but said no to the $215 spark plug job. I think I can manage that without a picture.


...I hate it when I am right.... ;)
 

Users who are viewing this thread

Top Bottom