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JET
Dodge Dakota
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12/31/2011
22:29:53

Subject: What causes misfire on 1 & 3 & 5 ???
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I have '98 V6 with a misfire the stored codes indicate it's on 1 & 3 & 5. Runs good when cold. Any ideas?



Woodie
Dodge Dakota
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1/01/2012
14:36:44

RE: What causes misfire on 1 & 3 & 5 ???
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No good fire in engine. It is like not having enough logs on the fire.



JET
Dodge Dakota
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1/01/2012
19:34:06

RE: What causes misfire on 1 & 3 & 5 ???
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Okay. I got another code today: P1391 (intermittent loss of CMP or CKP). Both are new. The misfire doesn't happen until the motor warms up. Any suggestions?



Curly
Dodge Dakota
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1/02/2012
10:07:14

RE: What causes misfire on 1 & 3 & 5 ???
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The problem is either the Crank or Cam position
sensor.


P1391 - Intermittent loss of camshaft position
sensor or crankshaft position sensor
Rich pointed out that possibilities include a dead
or badly installed camshaft position sensor; valve
timing out of spec; sensor relearning required
with a scan tool; or a damaged tone wheel or pulse
ring. ImperialCrown wrote that the cam position is
used mainly to synchronize fuel injectors, the
crank position is needed to know when to spark. A
good scan tool can usually pick up the problem by
monitoring the sensors; a bad one will sometimes
get “lost.” Timing chain and water pump sensors
can cause the code to be set (if timing marks are
out of range).



JET
Dodge Dakota
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1/02/2012
17:31:38

RE: What causes misfire on 1 & 3 & 5 ???
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I replaced both. Problem still remains. #3 is the first to throw
a code, followed by #5 and then #1. Timing chain appears to
be tight. The weird thing is it won't start misfire until the
engine warms up. Idle seems fine. Compression check
indicated a little difference: C6=160, C4=155, & C2=150,
C5=140, C3=155, C1=160. Doesn't burn oil; drops it, doesn't
burn it. No water in oil. Any ideas?



CUPOFNOODLE
Dodge Dakota
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1/03/2012
11:55:32

RE: What causes misfire on 1 & 3 & 5 ???
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COMPRESSION TEST YOU DUMB A$$. CHECK YOUR BABRECUE IGNITER TO SEE IF ITS HOT ENOUGH. THEN SHAKE THE F#$K OUT OF YOUR BABY TILL HIS BRAIN RATTLES LIKE AN OLD CAN OF BOLTS. THEN GIVE HIM YOUR TOOLS IF HES CONCIOUS AND HAVE HIM CHECK THE RESISTENCE OF THE WIRES TO YOUR CIGARETTE LIGHTER. IF IT SHOWS .43 RETURN VOLTS THEN THERES YOUR PROBLEM. IT SHOULD BE .44 IN ANY CASE YOUR HEAD IS CRACKED JUST LIKE THE BABY'S AFTER YOU DROPPED HIM OFF THE BALCONY LIKE MICHAEL JACK OFF SON.



JET
Dodge Dakota
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1/08/2012
19:25:25

RE: What causes misfire on 1 & 3 & 5 ???
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The problem turned out to be a bad plug wire on #3. I also had poor wire on the #6. So, given this trouble was related to two things: the campshaft position sensor was faulty and the #3 plug wire was bad.



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