Question about 1996 Ford Explorer

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Check Engine light

I have a code P0171. Any suggestions on how to fix this? I have a 96 Ford Explorer XLT V8. Rough idle, no loss of power while accelerating, slight hesitation while driving but no drag to accelerate and if the gas is floored I get black smoke and soot from the tail pipe.

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  • Ford Master
  • 5,537 Answers

This is a lean Code. What is happening is too much air is entering the engine and the O2 sensor is making the engine run rich to rebalance the fuel ratio.

You need to find the leak. Use a spray bottle of water while the engine is running. When you spray over the leak, the rpm will change or the engine may even stall. This is where repair is needed.

Posted on Mar 29, 2014

Testimonial: "When I spray the water, Am I spraying along all hoses from the top of my engine or somewhere below? I'm not too sure where to start/look. All the hoses look the same to me lol."

  • fordexpert Mar 29, 2014

    These would be the lines going to electric switches and along the seams of the intake manifold. Best to look up subjects of "Intake manifold gasket" and "vacuum hoses" for your year and model vehicle. Just google it.

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Posted on Jan 02, 2017

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  • 116 Answers

SOURCE: 98 E-250 Rough Idle; codes p0156,p1131,p1151,p0301,p0171,p0174+

po301 thru po306 all misfire codes cylinder 1-6 remove plugs and replace them..... set the plug gap first
i suggest u replace the wires also if they never been replaced all these misfire codes can set the others and one is for the oxygen sensor ( 02s or HO2S) CIRCUT MALFUNCTION do u know how to check wireing systems
do the tune up plugs (set gap) .052-.056 change the fuel filter also. clear the codes hows it run
this info is for 98 E-250 4.2Litre
what engine do u have 4.2L or 4.6L i know it is a v-6 by the codes

Posted on Dec 15, 2008

  • 180 Answers

SOURCE: 1997 Ford Explorer XLT V8 5.0L Check engine

ok you can take the egr valve off and clean it and if that works you my need to take it to get reset on codes other then that also check vacum lines if these do not work you will have to replace and i hate saying that because this part is high.. good luck to you and have a blessed day..

Posted on May 13, 2010

batviper
  • 120 Answers

SOURCE: Rough idle. Skips and bucks with acceleration.

check the icp sensor

Posted on Nov 17, 2009

Mike258
  • 1498 Answers

SOURCE: 98 explorer sputtering and white smoke from tail

Hi Dre,

I hope you don't shoot the messenger, It sound like a blown head gasket.

The white smoke is water in with the combustion.
The rough running is either no compression or coolant in with the fuel/air mix.

Things to check to confirm.

  • When cool, take off radiator cap. is fluid low? Get everyt one clear and start the engine. Does coolant erupt out of the radiator?
  • Run a compression check on all cylinders
  • While the plugs are out, inspect cylinders (flashlight) for water.
  • Check oil for a milky color
The little bit of good news is it still runs. So secondary damage hasn't occurred yet. You need to get this addressed quickly.

I'm sorry to be the bearer of this type of news.
Mike
\

Posted on Dec 09, 2009

SOURCE: Ford F150 engine backfiring, running/idling rough

I Have a 1999 ford f150 4.6 that back fires and is just running really ruff when idling alot of nack fire a sord of like a pulse going on what is my problem?

Posted on Oct 12, 2011

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i suggest u replace the wires also if they never been replaced all these misfire codes can set the others and one is for the oxygen sensor ( 02s or HO2S) CIRCUT MALFUNCTION do u know how to check wireing systems
do the tune up plugs (set gap) .052-.056 change the fuel filter also. clear the codes hows it run
this info is for 98 E-250 4.2Litre
what engine do u have 4.2L or 4.6L i know it is a v-6 by the codes

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