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98 dodge 1500 1 and 8 misfire
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bluebabe
New User
Oct 15, 2011, 12:33 PM
Post #1 of 9
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98 dodge 1500 1 and 8 misfire
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I have a 98 dodge ram 1500 with a 5.9 that shakes any time I drive 35-60 MPH. it has 255 misfires on number 8 and 145 misfires on number 1 every thirty seconds of datastream. changed all plugs wires cap rotor. and routed plug wires per the dodge TSB. Also I pulled out the fuel rail and hooked up all the injectors. every injector has a great spray pattern.
(This post was edited by bluebabe on Oct 17, 2011, 5:34 PM)
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Hammer Time
Ultimate Carjunky
/ Moderator
Oct 15, 2011, 12:55 PM
Post #2 of 9
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Re: 98 dodge 1500 1 and 9 misfire
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Check your firing order. They fire in sequence.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Sidom
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Oct 15, 2011, 4:55 PM
Post #3 of 9
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Re: 98 dodge 1500 1 and 9 misfire
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Also try swapping the injectors to different cylinders to see if the miss moves. A compression test wouldn't be a bad idea.
If you can, rig up a vacuum gauge you can read while your driving to see what reading is doing when it's missing
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bluebabe
New User
Oct 17, 2011, 5:38 PM
Post #4 of 9
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Re: 98 dodge 1500 1 and 9 misfire
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Checked the firing order. It was all wrong. Cant believe how good the truck ran how it was. Corrected firing order and now 1 misses less only about 70 times in 30 seconds but 8 is still missing all the time. have not done a compression check yet.
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Hammer Time
Ultimate Carjunky
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Oct 17, 2011, 6:10 PM
Post #5 of 9
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Re: 98 dodge 1500 1 and 9 misfire
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Did you move the distributor at all in this?
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Sidom
Veteran
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Oct 17, 2011, 9:11 PM
Post #6 of 9
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Re: 98 dodge 1500 1 and 9 misfire
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Don't rule anything out but keep in mind that 1 & 8 are about as far apart as you can get mechancially but right next to each other in the firing order.
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bluebabe
New User
Oct 17, 2011, 9:28 PM
Post #7 of 9
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Re: 98 dodge 1500 1 and 9 misfire
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I have never moved the distributer and it is tight. Firing order is now correct. I bought the truck this way so I do not have any other history to go off of.
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Hammer Time
Ultimate Carjunky
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Oct 18, 2011, 3:04 AM
Post #8 of 9
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Re: 98 dodge 1500 1 and 9 misfire
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Someone may have moved the distributor thinking they could change the timing. That throws the injector synch out and has to be set using a professional scan tool
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Discretesignals
Ultimate Carjunky
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Oct 18, 2011, 5:03 AM
Post #9 of 9
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Re: 98 dodge 1500 1 and 9 misfire
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You can sync the distributor with a volt meter too. Half the time the distributor housing on those are seized up and you can't turn it. What do or did the plugs look like on 1 and 8?
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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