Question about Dodge Ram 1500

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94 dodge ram pickup 1500 v-6

My truck sputters pops and resists to go i have had one person tell me it is the o2 sensor what do you think??

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  • 2 more comments 
  • antvang Jul 29, 2008

    ok now i have another question what would cause the rich air/fuel mix?

  • Anonymous Jul 31, 2008

    I have the same problem with my 1998 Dodge Ram 1500 but there's no service engine light that comes on when it happens. Also I had it in the shop to be diagnost but nothng came up wrong. So what's causing my hesitation no power problem?? I've purchased gas from a different station and still nothing.

  • darcelkenned Dec 31, 2008

    truck sputters and hesitates when in gear but when in park runs good.if i put it in 2d it stops sputtering

  • klemoine1233 Feb 02, 2009

    I have a 2003 dodge ram 1500 with 5.7ltr and it's doing the same thing.

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Try checking the harmoic balancer. it is very common for these to go bad. I personnally replaced many of these with the same problem with the check engine light not coming on for this reason. just see if the weight is comming off the crank

Posted on Mar 21, 2009

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Hi there,

Many dodge models actually have two o2 sensors. I'm not sure if this applies to your model. If so, one is on or just downstream of the exhaust manifold. The other on the outlet pipe of the catalytic converter.

The PCM compares the readings and adjusts the fuel/air mix to keep the catalytic converter operating at max efficiency.

A malfunction in any portion of this sub-system could cause your symptoms. So let's run a test on the o2 sensor(s).

  • You'll need an Ohm Meter.
  • Be careful when doing this. If the lead wires on the sensors are damaged, the sensor will likely malfunction. Locate and pull the electrical connector from the o2 sensor.
  • Attach Ohm Meter leads to the terminals.
  • It should read 5 to 7 Ohms
  • If not, replace them
Keep in mind, these symptoms could also be caused by many other things.
  • Timing
  • Vacuum leaks
  • Bad gas
  • Clogged catalytic converter
  • Cracked/bad distributor
  • Plug wires shorting against one another
  • Weak spark
  • Rich Air/Fuel mix
If your vehicle has OBD (On Board Diagnostics), you can narrow down the problem by checking for trouble codes.

To do this manually, get a pad, a pen, your keys and get in your truck.
(the procedure for entering diagnostics may vary, but this works for the dodges I've worked on)
  • What to expect: On your dash there is a CHECK ENGINE or MALFUNCTION light. It will blink to signify the digits of any error codes. The codes have two digits with a pause between them. Blink-Pause-Blink-Blink would signify a 12.
  • To enter diagnostics: Turn the ignition ON-OFF-ON-OFF-ON (within 5 seconds)
  • The codes will begin to flash
  • Write them down.
Of course, its easier to go to an auto parts store that offers code reading service.

Question: Of all the possible causes, why did the o2 sensors get picked as the cause? Is there more to the story?

Any way, run the tests, perform the diagnostics and get back with me, we can go from there.

Hope this helps

Mike


Posted on Jul 29, 2008

  • Justin Case
    Justin Case Aug 02, 2008

    Thought I'd check in to see how you (and your truck) were doing.

    Well, I hope.

    BTW, Thanks for the rating, I appreciate it.

    Mike

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