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1998 Dodge Ram poor idling and backfires when you take off

Tiny
CKJJSS
  • MEMBER
  • 1998 DODGE RAM
  • V8
  • 2WD
  • AUTOMATIC
  • 211,500 MILES
I am haveing an issue with my truck after start upThe truck has a tendency to run rough right after starting it and it backfires trough the air intake when I try to accelerate.I have replaced the oxygen sensors. Idle control switch throttle positioning switch, air pressure sensor coolant sensor.
I am running out of what is causing this.I have just recently had this truck to the dealership but they were unable to make this do it.
I hanged the plugs and wires recently. There has been no check engine light com on when this happens.
If some body could give me some advice it would be great. Thanks again Chuck
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Monday, June 7th, 2010 AT 8:59 PM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Engine running rough or misfiring can be cause by the following:

1. Defective spark plug
2. Inadequate spark/coil, defective spark plug wire.
3. Lack of compression
4. False air leakage.
5. Faulty fuel injectors.
6. Insufficient fuel pressure.
7. Contaminated fuel.
8. EGR valve that is leaking.
9. Oxygen sensors.
10. Throttle position sensor.
11. Idle air control valve.
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Tuesday, June 8th, 2010 AT 2:25 AM
Tiny
RYAN12387
  • MEMBER
  • 3 POSTS
Well got into alot of checking that today all seems fine but we pulled the fuel line from the fuel rail and it will run tell the gas is gone when we hook the line back up it just turns over. Starting to wonder about the fuel pressure regulator.
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Monday, June 21st, 2010 AT 7:28 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
CEL On -scan the computer for code/s and also check the fuel pressure with a gauge
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Monday, June 21st, 2010 AT 7:54 PM

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