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jch
Dodge Dakota
JOIN HERE
8/10/2008
00:14:34
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 Subject: 02 3.9 misfire
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Message:
2002 Dakota 3.9 ,I've changed plugs, wires,coil, Cap & rotor button. Truck runs fine until it reaches normal operating temp. then it starts to misfire .Its shows multi cyc. mis fire 1 & 5 . I had this problem before I replaced everything but new parts didn't help. Any ideas on this problem?
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dakota49
Dodge Dakota
JOIN HERE
8/10/2008
19:46:39
| RE: 02 3.9 misfire
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Message:
just a suggestion, try unplugging the fuel injectors, and plug back in, that could help if there is a bad connection.
Good Luck
Dakota49
1988 3.9 4X4 5speed
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J and J Auto
GenII
8/17/2008
05:34:11
| RE: 02 3.9 misfire
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Message:
The misfire code is almost always caused by a bad
injector.
You need to check the connection, the ASD volt side
same as batt volts and the driver to computer wire
from plug to computer pin no resistance
If thats ok and you replace the injectors and
still get the code I hate to say it but than its
an internal failure with the computer itself
I do not know why but there have been about a
dozen obd2 computers I have seen go bad this way
check the wires and injectors yourself
change out #1 and 5 injectors with the
#2 and 6 from the other bank and see what happens
if 2 and 6 come up bad its the injectors
If still 1 and 5 check wires if good get a used
or reman computer and you will also have to have
the vin and mileage flashed into the new comp
or it will not run
Good Luck hope its just the easy stuff
Larry
J&J Auto
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