dodge SUV 2003 4.7 liter

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ignatz - 14 Sep 2008 16:49 GMT

Just got this in - engine sounds OK with slight hissing noise - (vacuu
leak?) but runs very rich, black smoke out tailpipe, and check engin
light on. Do these motors have history of this kind of problem? Any hel
is appreciated - am considering buying this no not able to dig too far int
problem yet. thanx, ignat

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Miles - 14 Sep 2008 19:00 GMT

> Just got this in - engine sounds OK with slight hissing noise - (vacuum
> leak?) but runs very rich, black smoke out tailpipe, and check engine
> light on. Do these motors have history of this kind of problem? Any help
> is appreciated - am considering buying this no not able to dig too far into
> problem yet. thanx, ignatz

Don't know of any history of major problems. The 4.7L is a good
dependable engine. You need to read the error code using the
on-off-on-off-on key trick or stop by an AutoZone and have them read it
for free.

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ignatz - 15 Sep 2008 03:42 GMT

GReat- will try that asap. bo

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ignatz - 15 Sep 2008 16:00 GMT

Hi! Got to read the codes - has 6 reading-P0131,P0133,P0171,P0442,P0455
and P1195. 3 are for ox. sensor ckt, then 2 are for evap. system leak
and fuel trim sys. leak (?) . This truck runs OK but gets frighteningl
bad gas mileage- about 6 mpg! Also at 30 MPH or so its seems as trann
gets confused about what gear to be in - likely because of engin
problems? The ox. sensor has recently been changed.. As usual , thank
for any info. ignat

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ignatz - 16 Sep 2008 19:07 GMT

Check my last comment - the fuel trim system code was fuel trim system ban
1 lean - not leak - I guess the computer thinks there is way too much ai
into bank 1 (drivers side?) so its dumping gas in - not sure why. Thanx,
ignat

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ignatz - 18 Sep 2008 21:57 GMT

Also, how do you ID the 2002 NZC or NZD body to get the proper o2 sensor
thanx, ignat

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ignatz - 29 Sep 2008 19:03 GMT

Hi! Found that the new o2 sensor put in was not adequate - and when I put
Bosch in the problem was resolved. It was the O2 sensor before th
catalytic convertor. thanx, ignat

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