2004 Jeep Grand Cherokee jeep grand cherokee

2004 JEEP GRAND CHEROKEE
179 MILES • 4.0L • 6 CYL • 4WD • AUTOMATIC
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GREG BECK
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  • 3 POSTS
my 2004 jeep grand Cherokee run great when I get in it in the morning then I drive 4 a while & when I push the pedal 2 the floor it has now power it bogs down then I let up & it kicks in and runs rough & still has no power . can smell gas & white smoke comes out of the tail pipe thinking to much fuel ?? I drove 20 miles yesterday & then it really went bad & only could get it 2 go about 8 miles per hour :( it sat for 6 hours got in started it up was fine & it drove like new but didn't want to go 2 far in case in ran into the same problem ?? please help ???
Nov 3, 2015 at 10:04 AM
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HMAC300
  • CAR REPAIR CONTRIBUTOR
  • 48,601 POSTS
scan for codes and check fuel pressure with a gauge
Nov 4, 2015 at 6:42 AM
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GREG BECK
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  • 3 POSTS
well i diconnected my exguast from the manifold & it runs great no problems at all. i then re-hook the exhust back up & cant go even a block no power or anything :( thinking my catalytic converters are plugged up ??? what would u think ??
Nov 4, 2015 at 7:50 AM
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GREG BECK
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  • 3 POSTS
shows no codes !!
Nov 4, 2015 at 7:50 AM
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HMAC300
  • CAR REPAIR CONTRIBUTOR
  • 48,601 POSTS
disconnect it after the converter because normally a bad converter will throw a code. if it still does it check vacuum at intake if 15" or below then it may be the converter. they are covered for 80,000 miles by warranty
Nov 4, 2015 at 9:31 AM