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What could be wrong with my Dodge van?
I changed the spark plugs, wires,rotar and bug. Now it is back firing.. When going down the road it has a hessation in the pedal it even back fires whe ndriving down the road..and then when you stop at a stop sign it back fires.. If I put it in park and let it idal it does not back fire.. Please help me.. What could be wrong with it???
- 1 decade agoFavorite Answer
Could be your timing is off or vacuum hoses unhooked or cracked
- mark tLv 71 decade ago
You changed the " BUG"? Well chances are if you did not move the distributor which would alter the timing you have put the wires back on in the wrong positions and that would change the firing order, causing the back fires. Don't panic, get an automotive service manual for your van and get the spark plug wiring diagram. Make sure your wires are on in the correct order.
- bobwebLv 71 decade ago
Hesitation and backfire from the intake manifold indicates a lean air fuel mixture which would be obvious on the scanner that a technician hooks to your car in the shop. It tells him the closed loop long and short term "fuel trim" achieved by the computer control. However, the computer can only correct for an imbalanced air fuel mixture up to a certain point, and then the car noticeably runs poorly and may even revert to open loop default settings in the computer. That's called the "limp home mode" in which you can barely keep it running, and the check engine light comes on. If you've already had the yellow check engine light come on, even if it went out later, your technician can read out the computer error codes and get an idea of what component may be at fault. Many times an emissions related subsystem like the EGR Exhaust Gas Recirculation or PCV Positive Crankcase Ventilation may be the problem. Some vehicles have a MAF Mass Airflow Sensor element that gets contaminated or goes bad.
- 1 decade ago
If the problem only started AFTER changing the rotor and cap (sorry don't know what a bug is) Then you should make sure that the firing order is correct, meaning that each wire goes the correct path from the sparkplug to the distributor cap.
If you moved the distributor in any way the ignition timing must be reset with the help of a timing light.
- eferrell01Lv 71 decade ago
Check the firng order again. Sounds like two wires are crossed.
- bugenhagenLv 45 years ago
First vast issue -- this is a sidestep the main un-sturdy style on the line (unquestionably actual -- see customer comments) It sounds like a gasoline line issue. ought to be any style of issues from a foul gasoline pump, undesirable gasoline, undesirable gasoline filter out, the record is going on. of path this is a sidestep -- ought to be something.
- butrcuppsLv 61 decade ago
Try changing the fuel filter.
- aussieLv 61 decade ago
the timing needs to be set
- Anonymous1 decade ago
You need a valve job. You have a burnt intake valve.
- 1 decade ago
it sounds like the ABS brakes need changing