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failed emisions

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Since: Nov 17, 2006
Posts: 1

(Msg. 1) Posted: Fri Nov 17, 2006 9:37 pm
Post subject: failed emisions
Archived from groups: alt>trucks>ford (more info?)

I recently failed the emisions test. its an 88' ranger 2.9
my hc was about 18. and co passed but was high about 33
I did a complete tune up before the test (cap, roter, plugs, wires and
fuel filter)
I replaced the o2 sensor after the test and the exhaust smells better
now not just
pure gas. but the idle is still surging a few hundred rpm ans has some
Need some advice could this be egr or maf or map?

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