ignatz

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

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miles

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.

ignatz

GReat- will try that asap. bob

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ignatz

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 frighteningly
bad gas mileage- about 6 mpg! Also at 30 MPH or so its seems as tranny
gets confused about what gear to be in - likely because of engine
problems? The ox. sensor has recently been changed.. As usual , thanks
for any info. ignatz

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ignatz

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

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ignatz

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

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ignatz

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

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