Question about 2003 Dodge Ram Maxi

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Hesitation/Backfiring It hesitates and backfires shortly after starting but corrects itself once gas pedal is floored,.only to recur the next time the engine is started.

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Sound like its flooding

Posted on Feb 15, 2009

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I had the same same problem with my 01 pathfinder replace gas filter , crank sensor and that was not the problem the problem was my mass sensor wow now truck works great

Posted on Jan 26, 2014

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Posted on Jan 02, 2017

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SOURCE: possible reasons for backfiring and hesitation while accelerating

Timing belt slipped.

Posted on Apr 17, 2009

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SOURCE: have code p1391 and p0340, replaced both sensors

had similar problem with 99 ram. i made holes in crank sensor a bit bigger,removed rubber seal that sensor goes through in trans,installed 1 bolt and adjusted sensor back towards firewall and tightened that 1 bolt and its worked fine ever since

Posted on Aug 07, 2009

arauzvictor1
  • 466 Answers

SOURCE: engine runs fine most of time then once in a while

It is best that you make a scanner to see if it gives you some code and do not keep changing parts for pleasure I recommend that if you measure the pressure of the gas pump when you feel the decision would be good for my doubts. Thanks

Posted on May 10, 2010

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1 Answer

Sometimes when I drive several miles and then stop. When I try to start it again, the engine turns over but won't start It is like it floods itself.


Have you tried to hold the gas pedal to the floor ? Ford's have clear flood mode strategy programmed into the PCM , if you hold pedal to the floor the engine computer disables the fuel injectors . If it is flooded holding to the floor will clear it out .

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What should I try replacing next?


check for spark . if you have spark it should fire or at least try timing may have gone .

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losing power and backfiring could be because of a bad mass air flow sensor . Could have jumped time , timing chain

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When you say changing everything basic, please give list. Did it run this way prior to all the changing?

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Check for error codes (DTCs) before going any further. Sounds like a fuel problem (fuel pump, injectors, etc.) which may have been affected by bad gas. Try a good fuel additive (cleaner) as well.

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I bought a 89 ford bronco it will back fire through the fuel injection when you give it gas but not all the time


sounds like it is running lean. Check engine light on?

You mean backfiring through the intake manifold right?

A tip in hesitation or backfire is usually a lean condition. If you have a MAF sensor, clean the inside exposed wires with carb cleaner. Do no touch.

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Reset check engine light after oil change


Turn the key to the on position. Not the start. And press the gas pedal all the way to the floor 3 times.

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1 Answer

Car idles fine but will not go over 2000 rpm's when the gas pedal is pressed. Lots of hesitation and some backfiring when gas pedal is pressed.


We need to know more about what car and engine you have, but the primary suspect is that the timing belt has slipped and things are out of time.

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Doesn,t want to start without holding the


poss injector dribble, leaking injectors fill pots over night does the engine spin over fast first try in the morning depressing the gas pedal to the floor make a NO FLOOD condition in the vehicle so it will not deliver any more fuel what do you think, possible?

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96 jeep cherokee backfire through throttle body


I am going to take a stab at this....as I think you may have a head gasket that has blown out. The head gasket will cause a lil white smoke, and make idling extremely rough. Sometimes water will fill up in the top of the cylinder in the compression chamber when this leak, even minor occurs. That would explain some of the compression issues. Obviously with no compression it will not run properly or even fire if there is water vapor pentrating into chamber mixing with fuel giving you that white smoke/steam.

These are somewhat time consuming to change, but not difficult. The backfiring is caused by the computer trying to compensate for the firing issue. The computer when you change the head gasket is easy to fix. After repairng gasket, try to start the car a few times but not allowing it to run as it will just continue backfiring. Turn key off, let the vehicle set about 30 minutes or so, then go back and the vehicle should run properly again.

Let me know,

Chip

Apr 11, 2010 | 1996 Jeep Grand Cherokee

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