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Error Code 43
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alex d
Oct 28, 2002, 7:09:27 PM10/28/02
to
Anyone have any explanation on an error code 43 from a 97 TJ. My Haynes
Manual says its a cylinder misfiring. It seems to be running fine, no
obvious power loss. Is a spark plug, or wire thing or is it a hint of
something worse? Just looking for some tips before i take it in to the
mechanic. The plugs aren't even that old, 3-4 months maybe at most. I
haven't pulled the plugs to check yet though what they look like. Anyway,
thought i'd post to see what everyone says.
Thanks
Alex
Manual says its a cylinder misfiring. It seems to be running fine, no
obvious power loss. Is a spark plug, or wire thing or is it a hint of
something worse? Just looking for some tips before i take it in to the
mechanic. The plugs aren't even that old, 3-4 months maybe at most. I
haven't pulled the plugs to check yet though what they look like. Anyway,
thought i'd post to see what everyone says.
Thanks
Alex
Mike Romain
Oct 28, 2002, 7:21:21 PM10/28/02
to
My guess is one of the plug wires is loose either at the plug or in the
distributor cap.
distributor cap.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail
88 Cherokee 235 BFG AT's
Jerry Bransford
Oct 28, 2002, 10:13:33 PM10/28/02
to
I have, but not by choice, become the guru of the difficult to diagnose
43 codes after chasing it for probably 3+ years. To cut to the chase,
it's very likely that you need to replace your valve springs as directed
by a TSB. The TSB is for this exact problem that after several years of
troubleshooting multiple 43 codes in my '97 TJ, a friend finally pointed
it out to me. In a futile attempt to fix it, I had replaced the spark
plugs, plug wires, distributor cap, rotor, fuel injectors, ignition
coil, and PCM (engine computer). The TSB describes a bad batch of weak
valve springs that cause the valves to not close completely, as well as
deposit carbon deposits around the valve seats. Your dealer is very
aware of this TSB that is described as for misfires, not '43' codes.
I'm about to replace my valve springs, I just need to get around to
doing the job. The friend of mine that told me about the TSB says his
43 codes finally went away permanently after performing the TSB on his
own, as I will be doing. It's TSB 18-22-98 and covers the "OBD II
Misfire Monitor" dated 6/12/98.
43 codes after chasing it for probably 3+ years. To cut to the chase,
it's very likely that you need to replace your valve springs as directed
by a TSB. The TSB is for this exact problem that after several years of
troubleshooting multiple 43 codes in my '97 TJ, a friend finally pointed
it out to me. In a futile attempt to fix it, I had replaced the spark
plugs, plug wires, distributor cap, rotor, fuel injectors, ignition
coil, and PCM (engine computer). The TSB describes a bad batch of weak
valve springs that cause the valves to not close completely, as well as
deposit carbon deposits around the valve seats. Your dealer is very
aware of this TSB that is described as for misfires, not '43' codes.
I'm about to replace my valve springs, I just need to get around to
doing the job. The friend of mine that told me about the TSB says his
43 codes finally went away permanently after performing the TSB on his
own, as I will be doing. It's TSB 18-22-98 and covers the "OBD II
Misfire Monitor" dated 6/12/98.
Jerry
--
Jerry Bransford
PP-ASEL KC6TAY
The Zen Hotdog... make me one with everything!
Geezer Jeep: http://www.jjournal.net/jeep/gallery/JBransfordsTJ/
David C. Moller
Oct 29, 2002, 1:41:57 AM10/29/02
to
Is it only one instance of code 43? Wife's 98 Dodge Neon had the check
engine light come on once about 8 months ago.... code showed misfire, but
only one. Apparently it will store multiple codes if it is happening
repetedly. A single misfire didn't seem like all that much to me, so I just
disconnected the battery for about 10 minutes, connected it back up, and
voilla.... no more check engine light and no more misfires since then.
--
Dave
http://home1.gte.net/res0p2es/david/
engine light come on once about 8 months ago.... code showed misfire, but
only one. Apparently it will store multiple codes if it is happening
repetedly. A single misfire didn't seem like all that much to me, so I just
disconnected the battery for about 10 minutes, connected it back up, and
voilla.... no more check engine light and no more misfires since then.
--
Dave
http://home1.gte.net/res0p2es/david/
"alex d" <redbrd19...@yahoo.com> wrote in message
news:apkjjp$2gevj$1...@ID-151000.news.dfncis.de...
aduran29
Oct 30, 2002, 12:12:34 AM10/30/02
to
interesting. i haven't gotten around to checking out if it's just a loose
connection. Is replacing the valve springs hard for someone who has little
experience past replacing plugs and wires and an occasional broken sway bar
link? If it is i'll just take it to my mechanic with the TSB you mentioned.
Thanks for your help guys
connection. Is replacing the valve springs hard for someone who has little
experience past replacing plugs and wires and an occasional broken sway bar
link? If it is i'll just take it to my mechanic with the TSB you mentioned.
Thanks for your help guys
Alex
"Jerry Bransford" <jer...@cox.net> wrote in message
news:3DBDFCEA...@cox.net...
alex d
Oct 30, 2002, 10:29:39 AM10/30/02
to
yeah, it seems that way. the light actually went off last night on my drive
home. I guess i'll just keep an eye on it.
home. I guess i'll just keep an eye on it.
"David C. Moller" <david_...@msn.com> wrote in message
news:V4qv9.29978$iV1....@nwrddc02.gnilink.net...
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