Code but no stuttering
04-05-2013, 05:22 PM
#1
Senior Member
Thread Starter
Code but no stuttering
So as some may know, I was having the engine issue, took plugs 7 and 8 out re screwed them in and torqued to correct Ft torque no more stuttering.. can't budge CYL 1 Spark plug( Just replaced all plugs) now the codes are reading Misfire 8, 7, and 1 and bad Heat OXYGEN sensor (no code until replaced plugs)??? Any clues you guys?
04-05-2013, 05:49 PM
#2
Not sure what year you are wrenching on but here is my thought. My 97 4.6 had a misfire on 2 plugs. It has coil packs. I cleaned the connections on the packs. Used an ohm meter and found 1 wire that was open. Changed all the wires, used dielectric grease and issue solved.
As for the O2 sensor. Maybe due for a change. Vacuum leak can cause lean conditions.lean conditions caused by the EGR passage being blocked.
Just random thoughts.
As for the O2 sensor. Maybe due for a change. Vacuum leak can cause lean conditions.lean conditions caused by the EGR passage being blocked.
Just random thoughts.
04-05-2013, 09:16 PM
#4
The IAC is 1 plug and 2 small bolts. Very easy.
The EGR is a little harder. Be very careful removing the 2 bolts that hold it to the intake. They break off easy. I know from experience.
The nut for the tube that runs to the exhaust manifold I think is 1''.
If you look into the throttle body by opening up the butterfly. Use a flashlight to look in, you can see the holes. Use throttlebody cleaner to soften it and something thin and strong to get the junk out.
The EGR is a little harder. Be very careful removing the 2 bolts that hold it to the intake. They break off easy. I know from experience.
The nut for the tube that runs to the exhaust manifold I think is 1''.
If you look into the throttle body by opening up the butterfly. Use a flashlight to look in, you can see the holes. Use throttlebody cleaner to soften it and something thin and strong to get the junk out.