Misfiring? NO code
#1
Misfiring? NO code
My car has started misfiring intermittently. When stopped, it makes the whole car jerk. When driving, there are noticeable jerks in the power delivery.
The weirdest thing is that I get no CEL and there are no stored codes.
Tonight, I'm going to check the following sensors:
MAF
Cam pos
Crank pos
Crank phase
Coils
Injectors
Is there anything else I should look at?
The weirdest thing is that I get no CEL and there are no stored codes.
Tonight, I'm going to check the following sensors:
MAF
Cam pos
Crank pos
Crank phase
Coils
Injectors
Is there anything else I should look at?
#3
When I changed the plugs about 2 months ago, there was some oil in the #3 plug well. Could it be related? I tried to clean it out as best I could, but there may have been enough seepage since then to interfere...
#4
Originally Posted by mzmtg
When I changed the plugs about 2 months ago, there was some oil in the #3 plug well. Could it be related? I tried to clean it out as best I could, but there may have been enough seepage since then to interfere...
#5
I had no code also and had the same isssues as you. I made it come on. Over reved in 2nd. The serivce engine light flashed on and off about 4-6 times. then stayed off. It was enought to lock the computer to run a check. I found out I have a misfire in #5.
Now,,, gotta see if its a injector, coil or plug.
Now,,, gotta see if its a injector, coil or plug.
#7
Originally Posted by gabex
Jesus H Christ...
So many people misfiring.. Me, Shift, mzmtg, JeEve, and more! What is happening to our cars?
So many people misfiring.. Me, Shift, mzmtg, JeEve, and more! What is happening to our cars?
I believe the proper term is:
"jumping jesus on a pogo stick"
#8
Originally Posted by gabex
So many people misfiring.. Me, Shift, mzmtg, JeEve, and more! What is happening to our cars?
Does seem to be a problem lately. It's surprising multiple occurrences of a misfire doesn't throw a CEL easier.
#12
Originally Posted by Shift
I had no code also and had the same isssues as you. I made it come on. Over reved in 2nd. The serivce engine light flashed on and off about 4-6 times. then stayed off. It was enought to lock the computer to run a check. I found out I have a misfire in #5.
Now,,, gotta see if its a injector, coil or plug.
Now,,, gotta see if its a injector, coil or plug.
#13
Did anyone find out what their problem was yet?
Here's my situation:
Took my car to a shop to have them install my 2k2 muffler.
Next day, car is running rough. Check ECU for stored codes.
0603-Cylinder #6 misfire. Replace all spark plugs (NGK PFR5G-11).
Checked for sparks. Still misfiring.
Decided fuel injectors must be bad.
Swapped #6 fuel injector with #2. Reset ECU, Started car.
Problem got worse, running even rougher. 0701-Multiple cylinder misfire.
Gas leaking out weld in new muffler.
Decided that injector #2 (previously #6) must've been bad.
Checked it with a multimeter, Replaced injector #2 and O-rings
on injectors #2 and #6. Reset ECU, Started car. All GOOD!
Let the gas burn that was in the exhaust, drove around 10 miles.
Everything seemed fine, 0701 returns. Still misfiring.
Pulled injector #4, it was busted. Bad o-rings, cracked.
Replaced injector #4 and o-rings, Reset ECU, Started car.
Checked ECU 0607-Cylinder #2 misfire.
Figured it could not be the new fuel injector. Swapped
coil pack #2 with #6. Reset ECU, checked codes.
Still 0607-Cylinder #2 misfire.
I don't have my multimeter. Could the fuel injector have gone
bad already? Or what other problems could there be causing this
misfire??!
Possibly unrelated: Under 1k RPM, REALLY high pitch noise. Radio
and lights were off. Dunno what it is??!
Here's my situation:
Took my car to a shop to have them install my 2k2 muffler.
Next day, car is running rough. Check ECU for stored codes.
0603-Cylinder #6 misfire. Replace all spark plugs (NGK PFR5G-11).
Checked for sparks. Still misfiring.
Decided fuel injectors must be bad.
Swapped #6 fuel injector with #2. Reset ECU, Started car.
Problem got worse, running even rougher. 0701-Multiple cylinder misfire.
Gas leaking out weld in new muffler.
Decided that injector #2 (previously #6) must've been bad.
Checked it with a multimeter, Replaced injector #2 and O-rings
on injectors #2 and #6. Reset ECU, Started car. All GOOD!
Let the gas burn that was in the exhaust, drove around 10 miles.
Everything seemed fine, 0701 returns. Still misfiring.
Pulled injector #4, it was busted. Bad o-rings, cracked.
Replaced injector #4 and o-rings, Reset ECU, Started car.
Checked ECU 0607-Cylinder #2 misfire.
Figured it could not be the new fuel injector. Swapped
coil pack #2 with #6. Reset ECU, checked codes.
Still 0607-Cylinder #2 misfire.
I don't have my multimeter. Could the fuel injector have gone
bad already? Or what other problems could there be causing this
misfire??!
Possibly unrelated: Under 1k RPM, REALLY high pitch noise. Radio
and lights were off. Dunno what it is??!
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