97 tj 2.5, engine code p0171 - JeepForum.com
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post #1 of 3 Old 08-16-2012, 11:52 AM Thread Starter
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1997 TJ Wrangler 
Join Date: Aug 2011
Location: San diego
Posts: 11
97 tj 2.5, engine code p0171

My jeep keeps throwing the CEL for a p0171. This happens on the freeway in 4th or 5th gear and is usually while going up a hill. The exhaust also has a gassy smell and there is a huge loss of power / gas mileage. So far I've changed out both o2 sensors, injectors, plugs, wires, cap and rotor, and reset the comp by holding the battery wires together. Any ideas?

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post #2 of 3 Old 08-16-2012, 03:01 PM Thread Starter
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1997 TJ Wrangler 
Join Date: Aug 2011
Location: San diego
Posts: 11
Also my jeep just turned over 105,000 miles, I'm planning to clean the throttle body today and maybe follow with a new TPS
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post #3 of 3 Old 07-03-2013, 02:12 PM
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1998 TJ Wrangler 
Join Date: Jun 2013
Posts: 27
Check your intake system, maybe its getting too much air.

edit: Oops! didn't realize this was such an old thread

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