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My 1998 tj jeep is hard to start, i replaced fuel pump because the filter had come off the end of it. and replaced the crank position sensor because i got a code po320 It ran fine for a while and then about 4 days ago i came out of work on a cold start it just cranked over and over till i killed the battery, so i put the charger on it for ten minutes and it started up. It ran fine but was hard to start and now its getting even harder to start and just to day if you try to give it a little more gas it sputters an back fires! whats the deal!

Posted by Anonymous on

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  • Cars & Trucks Master
  • 11,068 Answers

Try to give it a little more gas it sputters an back fires! In the first place your not giving it more gas unless it running ! If just cranking all your doing is letting more air in . Your vehicle has electronic fuel injection , not a carbuerator . Till the computer see's a RPM over 300 rpm , it's going by programming installed in the PCM - engine computer . It sputters an back fires because of a lean condition , low fuel . When starting a fuel injection engine you don't touch the throttle pedal . And if you were to push it to the floor and hold it , the computer goes into clear flood mode. If the vehicle were flooded that is what you would want to do .
P0320 OBD II Trouble Code
You may have O2 sensor problem or a map sensor or coolant temp . sensor . Your best take it an have a qualifiedd repair shop diagnose it .

Posted on Apr 27, 2017

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: 1995 Jeep Wrangler 2.5 4cyl spits and sputters while driving

have you considered checking alternator and battery? just a thought

Posted on Apr 01, 2009

  • 8 Answers

SOURCE: 1998 camaro I have replace the fuel pump and

its not your crank sensor its your starter. i just went through the same thing. i have a 1998 chevy camaro 350 lt1. if thats not it its in your stering colum

Posted on Oct 29, 2009

speedwagen
  • 491 Answers

SOURCE: vehicle ran fine one day,

Check for pressure on the fuel rail to see if the fuel pump and fuel pressure regulator are working

Posted on Oct 11, 2010

  • 432 Answers

SOURCE: I have a 1991 Olds cutlass ciera 3.3 v6, starts up

Good Evening, you might want to check those injectors, I can not remember for certain but that setup was sequential and when one or two have a problem it would take out the rest. Ohm out the injectors and see what you have there.

Posted on Nov 03, 2010

dgskroch
  • 15 Answers

SOURCE: Have 2002 Ford Explorer. Wouldn't crank, changed plugs and did tune-up, replaced fuel filter. Ran fine few days then wouldn't start again. Replaced battery, store said I had bad cell. Cranked

Your alternator might be bad also, or the crank sensor

Posted on Feb 04, 2012

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