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Unread 05-24-2012, 11:07 PM   #1
25greenwrangler
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1997 TJ Wrangler 
 
Join Date: Aug 2011
Location: Hull, Iowa
Posts: 154
air temp sensor

so I did the whole lack and ats cleaning and what a difference!! but after about an hour it went back to the way it was. anny ideas on what to do next? the ats was covered in this black sludge if that helps

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Unread 05-26-2012, 01:01 PM   #2
25greenwrangler
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1997 TJ Wrangler 
 
Join Date: Aug 2011
Location: Hull, Iowa
Posts: 154
idle air control and manifold temperature sensor called it the wrong thing
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Unread 05-26-2012, 10:33 PM   #3
jnicewan
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Location: Norman, OK
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What kind of problem are you having? If I understand correctly you cleaned the IAC and IAT (idle air control valve, intake air temp sensor)? did you clean the passage for the IAC and did you clean the throttle body too? After doing that did you reset the PCM, or unplug the battery for a couple mins? Resetting PCM is usually a good idea because it lets the PCM relearn idle strategy.
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Unread 05-28-2012, 09:59 PM   #4
25greenwrangler
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1997 TJ Wrangler 
 
Join Date: Aug 2011
Location: Hull, Iowa
Posts: 154
pour fuel economy hesitation and whenever I start kt after the first ten declines of running it almost stalls then comes back, cleaned the passages and reset the ecu by disconnecting the battery.plugs, wires are all good checked the D'OH! items. so far some of my interntet research seems to go with my theft
also did a test using a vom and it failed horebly
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Unread 05-28-2012, 10:00 PM   #5
25greenwrangler
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1997 TJ Wrangler 
 
Join Date: Aug 2011
Location: Hull, Iowa
Posts: 154
pour fuel economy hesitation and whenever I start kt after the first ten declines of running it almost stalls then comes back, cleaned the passages and reset the ecu by disconnecting the battery.plugs, wires are all good checked the D'OH! items. so far some of my interntet research seems to go with my theft
also did a test using a vom and it failed horebly
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Unread 06-03-2012, 07:16 PM   #6
25greenwrangler
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1997 TJ Wrangler 
 
Join Date: Aug 2011
Location: Hull, Iowa
Posts: 154
update:replaced the air temp sensor at a cost of 18 bucks, engine runs smoother but still lacks power,although power seems to come back the more I drive it(I only drove it 3 miles) oh and I unhooked the negative battery terminal for 10 minutes to reset the pcm andmy question is this since iv had this problem for 4 years, does it take pcm a long time to relearn with the right signals? or should it do that instantly? and as a bonus somehow the engine ticking is quieter.
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