Help a Marine Out
 

My 2007 TBSS is surging when it shifts from first to second gear. It started after installing a K&N CAI and me making the mistake of taking the screen out of the MAF. I replaced the MAF as soon as I found out that its bad to take it out. I have replaced several possible parts like the first and second shift solinod and all 4 O2 sensors thinking they were clogged. Before changing the O2 sensors it had 4 codes all bank 1,2,3,4 lean after it only has 2 codes bank 1,2 lean. I am thinking that its might be the cats clogged but not too sure. Any help would be appreciated.

Semper Fi !! Is the filter oiled? To be honest, my maf screen was removed for 5 years never an issue. If its oiled it could be getting oil on the maf, try cleaning it, that would explain the wierd shift and lean codes. If its not oiled, im not quite sure what to try. Where are you located?

I'm located at Camp Pendleton. Yea everything is oiled and everything. I just dont know what direction to go though.

Need to get it tuned..The tbss's are pretty sensitive about there air intakes lol

Clean the MAF. That's the cheapest thing to try. The oil on the filter will get sucked through the filter and gum up the resistors on the MAF. You can pick up a can of MAF cleaner at about any autoparts store.

Little off subject.. where on Pen do you work? I've only seen a few others on base.

I'm with the others... clean the MAF, check all the pins... on the connector could it have got banged around during all the install/de-installs?

Any shift issues and esp after playing with MAF I'd say a high percentage are due to an issue with the MAF. Double check connections... and.... honestly make sure it's not in backwards. I wouldn't have to say it if someone hasn't done it before.

I'm on Pendleton too.... just not right now.

I work on the air station on the ch-46e..thanks everyone for the help...I am going to double check tomorrow but I dont think this will fix it due to the fact that after I removed the screen I purchased a replacement and it started doing the same thing so i took it back and got a new one...It doesnt do it all the time just about 75% of the time and its really annoying me. I will keep everyone posted

It's the intake. Any TBSS should be custom tuned if a CAI is added as it will cause it to run lean. Look on the bright side a tune will net you about 15-30hp

It needs a tune.

I have a Cold Air Inductions intake on my TBSS and have no issues at all, and know a few others with the K&N and have had no problems. Only the guys running the 4" FWI or similar seem to all run lean requiring a tune. I would agree about cleaning the MAF. TBSSOWNERS.com would be a good place for additional info.