Petza914

Did you disconnect and reconnect the O2 sensors correctly?

chonniedotcom

Not right away. ;-). I did the cats a few weeks back and have drove it quite a bit. I don’t “think” it’s related. ;-)

chonniedotcom

99.999% sure. Not getting any O2 errors. Took pictures of the colour of the cables before I removed them from the old cats and copied that. ;-)

chonniedotcom

Ya made me doubt myself. ;-)

Crawled under the car.

Both sensors are blue wires nearest the headers.

Whew!!!

Right Side:



Left Side




;-)

Petza914

Did you release the O2 sensor wires from the clips in the back of the engine compartment before unscrewing the sensor plugs from the exhaust so they can turn freely, or did you just unscrew them, which can overtwist and damage the wires?

chonniedotcom

I had the cats out of the car when I unscrewed them. I unclipped all of them before dropping the cats.

Thanks.

Petza914

OK, that's good. Probably not that then. I'd pursue the other things I mentioned common to both banks.

chonniedotcom

Hey gang.

Took her out for a good stomp on the highway this afternoon as well as some in town driving as well. Ran like a champ. Good hour and a bit on the road. No issues.

Maybe a gremlin. I sure hope so. ;-)

Later....

Hella-Buggin'

Since it's outside, look for evidence of rodents.

chonniedotcom

Good call. ;-)

chonniedotcom

Misfire back on cylinder 1 only this time. :-(.
Again about 7 mins into a drive cruising on the highway, suddenly started to sputter. Pulled over.... shut the engine off.. waited 10 to 15 seconds to restart, misfire still there.

On the way home I could feel it miss, then run ok, then miss again.

When I left it alone for 15 mins or so at home and went to drive it up on my car ramps, it’s now running fine again. :-(

I am letting the car cool down then I am going to pull the coil for a visual. If it looks ok visually I will swap it with another coil to see if the issue moves cylinders.

Does anyone know off the top of their head if you can pull the plugs without having to pull the muffler?

Thanks.

jchapura

I could on my 997.1 C2S. Some are much harder than the others.

chonniedotcom

Thanks. ;-)

Wayne Smith

Cylinder 1 is right at the muffler. On a 997 2 you'd need to use a universal which would screw up torque readings when you reinstall. 997.1 may be different.

chonniedotcom

Well.... no need to move the coils around. The whole side are fooked.

#1 is the worst on this bank. All of them have cracks.

#3



#2


# 1


Time to go shopping.

Any suggestions where to buy new ones in Canada? Vancouver. Without getting totally hosed. ;-)

Thanks.