Replaced Air Filter and now she idles badly and stalls

[kk2002s]

My car came with a K&N, I have done the normal clean and re-oil a couple times with no detrimental effects. I started getting the hunting idle.
I did a complete Throttle body, tubes, MAF (Use MAF cleaner) and now my idle is rock steady
I had switched to a K&N on my mustang and was concerned about the MAF getting fouled but it never effected it

I think you need to see what residue maybe lurking in your throttle body and using some MAF cleaner.

[soucorp]

Originally Posted by kk2002s

My car came with a K&N, I have done the normal clean and re-oil a couple times with no detrimental effects. I started getting the hunting idle.
I did a complete Throttle body, tubes, MAF (Use MAF cleaner) and now my idle is rock steady
I had switched to a K&N on my mustang and was concerned about the MAF getting fouled but it never effected it

I think you need to see what residue maybe lurking in your throttle body and using some MAF cleaner.

I've used K&N air filters on my Z3 and Z4 without any issues. Porsches and Ferraris are not recommended as the oil particles from the filters will foul up the sensitive sensors. You might get lucky based on how much oil your filter has on it, but its a guessing game and luck at this point. No thanks, not worth the gamble.

[t_raven]

I had the same problem after installing the K&N filter in my 2001 base...
Really cleaned the MAF (almost used a whole can of MAF cleaner) and put it back in and no more problems...has run great since cleaning the MAF..

[johnappleby]

So I took a look in the throttle body and it looks clean so I'm going to give changing it a miss unless I have to. It looks really fiddly to get off and on and I don't want to break more stuff.

I filled up with a fresh tank of premium and threw in a can of injector cleaner, and she runs better.

I disconnected the MAF sensor and it runs fine in limp mode.

So think you are all right and the MAF sensor is the logical next step. It's on order, will update tomorrow. Thanks!

John

[jacabean]

i have been running a BMC filter for over 2 years and no problem .i cleaned and oiled it this past summer and still no problems.