Ancientsanskrit

Vehicle: 2005 TL (Auto) with 120,000 miles.
What car is doing: Bucking at idle between 750-1000 RPM and stalled a couple of times.

What happened: Did an oil change two weeks ago and while filling new oil, spilled a bunch over cylinder 6 and dripped down near O2 sensor. I cleaned topically and didn't think much of it. Drove about 200 miles and oil burned off and car was just fine. I go to turn on car after sitting for a week and it starts bucking (like a misfire).

Diagnosis from AutoZone: P0108 (MAPS).

What I've done: I decided to check the condition of spark plug 6 first. Lo and behold it was fouled out (I assume some of the oil must have seeped through). Thinking I was triumphant, I patched things up, cleaned up the coil pack with some brake cleaner and compressed air. Started her up, and she kept bucking.

What should I do: Any ideas on what I should do? Try cleaning out MAPS first?

Appreciate the guidance, guys/gals.

justnspace

iTrader: (1)

check PCV valve and then throttle body passage way for debris

justnspace

iTrader: (1)

you dont happen to have an aftermarket intake filter, do you?
also would check IAC valve

Ancientsanskrit

No aftermarket filter.

Okay stupid question; I thought the TB was electronic and thus could not be cleaned mechanically. Don't I risk breaking something by cleaning it manually i.e. the old toothbrush and carb cleaner method?

truonghthe

You can clean the throttle body but spray the carb cleaner into a rag then wipe down the carbon build up (repeated multiple times if needed), DO NOT spray directly into the throttle body.... As far as for the buckling issue I would look into another coil pack and a new spark plug to see if the problem goes away.

Here is the "expert" though on your issue and if I am not mistaken this sensor actually locate on the back side of your intake manifold (one facing the firewall)
https://www.yourmechanic.com/article...by-john-nelson

mixxedfella

Need some assistance...I cleaned my MAP sensor two days ago with CRC cleaner and after 5 minutes of driving my engine light came on. Is this normal? Will the code clear eventually clear itself?

justnspace

iTrader: (1)

^ go to autozone and have them pull the code for free.
once you know the code/error, then you can apply appropriate action

or you can reset the code by unplugging battery for a few mins...then plugging battery back up.
if code comes back, you know you did something bad and will need it checked out at autozone