Running issues.
10-08-2015, 02:20 PM
#1
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Running issues. 
Hey guys I have a quick scenario for you. I got the motor in the car and went to start. It won't start unless it's been sitting and then just dies. If I restart it it will not start unless I give it a lot of throttle.
I'm getting a lean bank one when I scan it but no actual code. Cylinder 1 header is warm, 3 is hot 5 is hot and 7 is hot.
O2 sensors are brand new. Pic shows show plugs 1,3,5 bottom is 1
1 looks like it's not even firing or very lean
3 is blackened
5 is wet and fairly clean other than a little blackness
10-08-2015, 04:15 PM
#2
Post the tune and the scan log[s]...
Some serious lean going on.
Have you verified all the wiring is correct? Inj harness, coil wiring, etc.
Fuel psi is?
Some description of the set up is necessary to help...
This isn't you Yugo, I take it.. Too many cyls!
Some serious lean going on.
Have you verified all the wiring is correct? Inj harness, coil wiring, etc.
Fuel psi is?
Some description of the set up is necessary to help...
This isn't you Yugo, I take it.. Too many cyls!
10-12-2015, 03:59 PM
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10-12-2015, 04:54 PM
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Keep in mind that a misfiring cylinder will cause that bank to go very lean as there will be a lot of unused oxygen which is detected by the O2 sensor as very lean.
10-12-2015, 05:34 PM
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Okay, but we did fix the cylinder, and it runs well. But we still have the lean issue. So could it be a bad plug or two? There is also a huge difference in temps from one side to the other.
Last edited by zeusrotty; 10-12-2015 at 05:43 PM.
10-12-2015, 06:03 PM
#7
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I would start with brand new TR55 non-platinum plugs.
Then if one or more plugs still look very different after running a while, I would swap the location of injectors to determine if one or more injectors are bad. Also a right-left swap of the coil packs might be helpful.
If that doesn't solve it, as Old_Geezer suggested, it might be time to verify the wiring,
even performing a continuity test from each injector back to the PCM.
Have you performed a compression and/or leak down test to ensure the engine is mechanically sound?
Then if one or more plugs still look very different after running a while, I would swap the location of injectors to determine if one or more injectors are bad. Also a right-left swap of the coil packs might be helpful.
If that doesn't solve it, as Old_Geezer suggested, it might be time to verify the wiring,
even performing a continuity test from each injector back to the PCM.
Have you performed a compression and/or leak down test to ensure the engine is mechanically sound?
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10-12-2015, 06:08 PM
#8
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Okay, I know the wiring is good. The plugs I have pictured are the same plugs that were in it before. So at least one of them is pretty fouled. I'll start there. What about the maf? We did leak downs and it's all good there.
Last edited by zeusrotty; 10-12-2015 at 06:14 PM.
10-13-2015, 09:36 PM
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Okay, so I changed out the spark plugs on bank one and fixed the stuck lifter. Now I'm getting a p0134 code. What does that mean? Did I dump so much fuel that I burned out the 02 sensor? Also, if my computer is for a 2002 camaro, should I be running AFS 75 02 sensors or AFS 105 sensors?
Last edited by zeusrotty; 10-13-2015 at 10:19 PM.