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

[986Eve]

Sudden Check Engine Light, Codes, Rough Idle & Rattle Sound! What do you think is going on?

1999 Boxster 55,000 miles, mint condition as of last week

Codes from my blue tooth reader are...

P117 - Mass air flow sensor? or O2?
P1121 - Throttle posisiton sensor?
P0140 - O2 Sensor (Bank 1, Sensor 2)
P0304 - Cylinder 4 Misfire Detected

[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]

UPDATE: Moved Coil 4 to 3 position. Cleared Codes.

Same Problem.

New Codes:
0300
0306
0304

I'm assuming this is not plug or coil related? I did a light inspection on the coil wires leading up and they look okay.

I find it hard to believe coils 4 and 6 are out at the same time.

??? Umm.... Suggestions ???

Hear me out... This link from a similar situation... https://www.renntech.org/topic/32676-p1316-p1317-p1318-p1319/ Leads me to believe something is loose. Basially when I got on and off the highway, fueled and got back on, something came loose. Hopefully, something like loose air intake tube on the throttle body... vs a camshaft position sensor.

[78F350]

Short of getting involved deeper in this thread, I have two good options to present you:

1. Take (tow) your car to a competent independent Porsche mechanic; Pay a pro to diagnose and repair it. The way you present yourself, it sounds like you could easily make things worse if you keep poking at it.
2. Have it towed to a spot where the hot chicks hang out and wait for them to come to you. Why waste money on gas and repairs?

That's all I've got. :chicken:

[986Eve]

Do you have a better suggestion?

[911monty]

Originally Posted by 986Eve

Umm... apparently you are not a competent Porsche mechanic, but thank you for the advice. The car IS WHERE HOT CHICKS hang out. It's 300 feet to the sand and a mile to Trump's pad. I can stand next to it broken and I still get picked up... at least 3 times a day. I don't think that will help fix it...

Do you have a better suggestion?

Seriously, I need to drive it up the coast a few miles with this really hot blonde, that is waiting for my call. I have to bend her over each light and make her hold the fender and the hood... and do what she does best. That's what I need this car for and Ideally this evening. Please assist if you know... something helpful.

Wear protection? That's all I got for you.

[986Eve]

Originally Posted by 911monty

Wear protection? That's all I got for you.

That's no fun.