Question about 1998 Dodge Ram 1500 4WD

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Codes P1683 and P1597 on 98 dodge ram

Truck does accelerate without spitting and sputtering except at full throttle

Posted by Anonymous on


6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
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Posted on Jan 02, 2017

  • 1498 Answers

SOURCE: 94 dodge ram pickup 1500 v-6

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


Posted on Jul 29, 2008

  • 9 Answers

SOURCE: 1998 Dodge Ram 1500 won't start

still sounds like the timing belt/chain to me,especially since it just shut off goin down the road, had a 93 that did the same thing,dodge has a kind of safety switch that if the timing belt breaks the engine will shut down to keep you from tearing anything else up.

Posted on Mar 06, 2009

  • 1 Answer

SOURCE: Electronic Throttle Control

I had same problem on mine. The wire harness under the throttle body cover rubbed and was cut in two. If you remove the cover and unplug the etc you can feed the harness under the plug wires to inspect them.very common problem on this vehicle.

Posted on Jun 03, 2009

  • 1 Answer

SOURCE: 2003 dodge ram 1500 hemi 4x4, no power or throttle response!

I also have an '03 Ram 1500 with the Hemi, and I too noticed that the throttle system definitely sucks. The issue lies with Chrysler opting for speed density instead of mass air flow, which is what the Hemi should have. I landed an a chatroom that had a procedure to try to fix the throttle response. Simple procedure.
1. turn the Ram on, but don't start.
2. wait 7 -10 seconds for onboard diagnostics to cycle and finish.
3. press the accelerater to the floor, using moderate leg speed and then let up.
4. shut Ram off, wait 10 seconds.
5. start up

After using this procedure, my Ram finally accelerated like a Hemi Ram should. The chatroom said that for some reason, this won't work on every Hemi Ram, but since you don't hook up into the computer, it's worth a shot.
Best of luck!

Posted on Oct 08, 2009

  • 52 Answers

SOURCE: 2000 dodge truck code po203 po204

p0203 injecter circuit malfunction cyl #3. p0204 injector circuit malfunction cyl#4. po138 02 sensor circuit,high voltage cylinder bank no.1,sensor no.2

Posted on Feb 17, 2010

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98 dodge ram 1500 the truck idles funny and spits and spudders and misses when you give it gas. if you put it in drive and give it gas it does not go anywhere it backfires out the exhaust and intake. But...

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Jan 15, 2013 | 1998 Dodge Ram 1500 4WD

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Codes P1683 and P1597 on 98 dodge ram

anything from a pin hole in a vacuum hose to fuel pump or filter issues so many things it could be but u can look up ur codes online

Jan 15, 2013 | 1998 Dodge Ram 1500 4WD

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