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Unread 01-09-2013, 08:09 PM   #16
RedJeepWhiteTop
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1997 TJ Wrangler 
 
Join Date: Aug 2012
Location: CC, Texas
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OMG, i didn't think the on off on off on trick would work after trying it a few times, then i tried it real fast and sure enough it worked, it gave me a check engine light 12!
Now i just have to research what that means.
Thanks everyone!

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Unread 01-09-2013, 08:15 PM   #17
RedJeepWhiteTop
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1997 TJ Wrangler 
 
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So it says that a code 12 is just letting me know that the battery has been disconnected within the last 50 cycles...which i did to do the tune up and ignition coil installs
I guess I will check out the TPS when there is some daylight.
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Unread 01-09-2013, 11:17 PM   #18
mukluk
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The TPS was what I was thinking of as well; sometimes the problem can be caused by carbon fouling in the sensor, you can try quickly running the TPS through its range of motion multiple times to see if that helps any (pump the hell out of the accelerator pedal a bunch of times, then start it up and take it for a drive - see if things are improved).
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Unread 01-10-2013, 05:16 PM   #19
JPNinPA
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2005 LJ Wrangler 
 
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If it isn't not the TPS I'd verify the restricted intake or exhaust. Clogged CAT, rotting pipes, any debris in the exhaust will do it.
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Unread 01-12-2013, 04:13 PM   #20
RedJeepWhiteTop
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Well I went ahead and replaced the TPS and there was a big improvement! But, the misfire is still there just faintly. Im going to let my wife drive it around for the next week and see how it goes. Thanks everyone!
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Unread 01-12-2013, 05:51 PM   #21
JPNinPA
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If its a true misfire you will throw a code. Is it a low pum, pum, pum noise at idle?
What kind of plugs did you use? Gap and tighten them correctly?
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Unread 01-13-2013, 08:39 AM   #22
RedJeepWhiteTop
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At idle it runs super smooth, it just when you get going the engine hesitates a little. I just used the plugs that it calls for underneath the hood.
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Unread 01-20-2013, 09:24 PM   #23
RedJeepWhiteTop
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Well the problem has come back again, still the same symptoms i guess ill check the exhaust?
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Unread 01-21-2013, 06:03 AM   #24
JPNinPA
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Quote:
Originally Posted by RedJeepWhiteTop View Post
Well the problem has come back again, still the same symptoms i guess ill check the exhaust?
Where did you buy the TPS from? Sometimes they are bad or go bad quickly right out of the box.
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