Top Down, 1-95 in Palm Beach... Cough Cough - Codes, Rough Idle, Erie Rattle

[986Eve]

HELP? Kindly, spoon feeding is okay. Really, I need all the advice I can get. The o2 sensor code was existing. My main concern is piston 4 is damaged and compression has failed causing a lack of power. Hoping to follow the leader on this one...

[husker boxster]

Pull the #4 plug and check its condition. If it's fouled, clean it up and replace. Swap the coil to another cyl. Clear the codes. Start it up and see if the misfire is still there. Check the codes. If the misfire code has moved to the cyl with the #4 coil now on it, you've got a coil issue. If the misfire is still on cyl #4, you've got either a bad plug or bigger issues.

[986Eve]

Thank you Husker - I'll take a look. And update.

Originally Posted by husker boxster

Pull the #4 plug and check its condition. If it's fouled, clean it up and replace. Swap the coil to another cyl. Clear the codes. Start it up and see if the misfire is still there. Check the codes. If the misfire code has moved to the cyl with the #4 coil now on it, you've got a coil issue. If the misfire is still on cyl #4, you've got either a bad plug or bigger issues.

[986Eve]

Be nice if they put an access door... aka.. hood with this model. Will investigate tomorrow

[Meir]

Originally Posted by 986Eve

Be nice if they put an access door... aka.. hood with this model. Will investigate tomorrow

They do. But anyway, you access the spark plugs from the wheel well.

[986Eve]

(I forgot to swap the coil pack so I'll do that here tonight or tomorrow morning and update)

Changed the plug. I put a new cheap autolight double platinum.

She still coughs. Less coughing, but quite bad. Actually throws the car around quite a bit. I don't think it's derivable out of second gear.
New codes...
P0300
P0304
P0305
P0306

Please advise. Any and all suggestions are greatly appreciated.

I have the nicest little blonde that I can call the moment this car is derivable. And no, I can't show up in a rental.

[flmont]

Maybe its bad fuel,check fuel filter for moisture.??

[blue62]

Originally Posted by 986Eve

(I forgot to swap the coil pack so I'll do that here tonight or tomorrow morning and update)

Changed the plug. I put a new cheap autolight double platinum.

She still coughs. Less coughing, but quite bad. Actually throws the car around quite a bit. I don't think it's derivable out of second gear.
New codes...
P0300
P0304
P0305
P0306

Please advise. Any and all suggestions are greatly appreciated.

I have the nicest little blonde that I can call the moment this car is derivable. And no, I can't show up in a rental.

All misfire codes on the same bank.
P0300 is a general misfire code that is telling you the misfires are strong enough to damage the Cat.
the other three codes are the individual cylinders on the same bank.

So you have an issue that is affecting one bank only.
So not a fuel problem
not a vacuum leak
most likely not 3 bad plugs all at once. although it could happen.
most likely not 3 bad coils all at once . although it could happen.

possibly an electrical problem in the wiring to the fuel injectors for that bank

you need to look for something that would affect all three cylinders on that one bank.
But doesn't affect the other bank.

In your first post you mentioned a metallic rattle.
There could be internal problems on that bank with the cam timing.
You Could have a failed variocam actuator or failed actuator pad.
or chain tensioner issues. I think they have a wear pad as well but not positive.
any of the cam chain issues mentioned can create slack in the chain and throw cam timing off creating misfires.
A compression test on that bank may tell you if your cam timing is off.
A leak down test would be better.

The O2 sensor code in your first post is telling you (if I am reading things correctly. I mess up sometimes)
that DME is not getting a signal from the O2 sensor.

P1121 is your throttle position sensor
could be a shot sensor.
could be a problem with the wiring to the sensor.

The P117 code in your first post?
Sorry I believe all OBDII codes are 4 digit. But I could be wrong!!!
So I have no info on that one.