check engine light
03-31-2009, 06:12 AM
#1
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Location: Corona, CA
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check engine light
last week my check engine light came on, and it gave me the codes that piston 1 has a misfire. so i changed all my spark plugs, and that didnt fix the problem. and for awhile my truck has been running really rough, feeling like its about to die at stop lights and such. should i try changing out the spark plug wires? thanks in advance for any help..
03-31-2009, 06:54 AM
#3
I would swap coil packs 1 to 3 and see if miss moves to #3(1,3,5 cylinders have coils) ..
Don't be fooled by the plug wire numbers...They correspond to the coil locations...not the wire locations
Wires should really say 2,4,6....but they don't
Don't be fooled by the plug wire numbers...They correspond to the coil locations...not the wire locations
Wires should really say 2,4,6....but they don't
Last edited by 97ltd4x4; 03-31-2009 at 06:56 AM.
03-31-2009, 07:27 AM
#5
LOL,didn't see that...a new wire set might be inorder...
It does share coil packs,But with two wires comming from same coil usually I would think that it would start to drop both cylinders if the coil was going...
It does share coil packs,But with two wires comming from same coil usually I would think that it would start to drop both cylinders if the coil was going...
03-31-2009, 07:55 AM
#7
Contributing Member
If you are getting a p0300, I might look differently at this trouble shooting. What does the FSM suggest for trouble shooting a P0300? If you don't know look here: http://www.ttora.com/forum/showthread.php?t=59089
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03-31-2009, 08:03 AM
#8
Contributing Member
I guess it doesn't matter, they show the same trouble shooting suggestions for all the misfire codes. I quote from this page:
http://www.ncttora.com/fsm/2003/Repa...rzfe3/dtcc.pdf
http://www.ncttora.com/fsm/2003/Repa...rzfe3/dtcc.pdf
P0300
(DI–77)
Random/Multiple Cylinder Misfire
Detected
Open or short in engine wire
Connector connection
Vacuum hose connection
Ignition system
Injector
Fuel pressure
EGR system (Only for 3RZ–FE)
Mass air flow meter
Engine coolant temp. sensor
Valve clearance
Valve timing
PCV hose connection
PCV hose
ECM
(DI–77)
Random/Multiple Cylinder Misfire
Detected
Open or short in engine wire
Connector connection
Vacuum hose connection
Ignition system
Injector
Fuel pressure
EGR system (Only for 3RZ–FE)
Mass air flow meter
Engine coolant temp. sensor
Valve clearance
Valve timing
PCV hose connection
PCV hose
ECM
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