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Old 07-07-2010, 05:42 PM   #1
greasmoky2
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3.8 Runs very rich

I have check coolant temp sender and air temp sender they are with 4 degrees of eachother. I have four codes p0172 ( rich code ) p0175 (rich code ) p0300 random misfire, and a p0135 but with scanner hooked up it is running with in paramiters, I checked for leaking injectors. none found. the thing is burning a ton of fuel and runs real rough.
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Old 07-08-2010, 07:19 AM   #2
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Re: 3.8 Runs very rich

Found the problem, it was a bad fuel presure regulater. it was filling up the intake with fuel, installed a new part and runs like a champ again
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Old 07-08-2010, 09:08 AM   #3
wrightz28
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Re: 3.8 Runs very rich

Nice catch.
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