Random stalling and more

My 4Lo light is flashing, my CEL is on and my TRAC OFF light is on. When I took it to autozone to hook it up it gave me a P0102 code with was MAF sensor. I replaced it and it went away for a few hours and now they are all on again. Before I replaced it it was almost in limp mode. Turning off randomly in drive throughs and truck would be on but the gas pedal wouldn’t work. Still throwing same code after replacement

 

If you haven't done any work to your truck recently (electrical related or performance mods), perhaps disconnect the battery for a bit or overnight reconnect and rescan. If symptoms persist check wiring related to code(s). Good luck, keep us posted.

 

Well everything looks good and I’m still clueless to what’s happening. I really want to replace the secondary air valve but it’s a lot of work and idk if that is the problem. I’ve tried the battery reset a few times and it goes away and just comes right back after a few miles. It only just recently started acting weird with the lights on. Like just cutting off randomly in park and no Rpms. While pushing gas pedal. But I’ve only had that happen once and it’s been ok since then

 

I think I will try the battery thing tomorrow morning I’ll disconnect both terminals and take my car to work instead then rescan when I get back

 

I wouldn't start throwing parts at it, it gets expensive, fast! Have you checked your battery voltage and alternator output?

Toyota's are finicky, I had crank and cam sensor codes in February, truck barely ran. The dealer replaced starter under warranty hasn't had an issue since.

 

Well I don’t know how it keeps saying it’s the MAF code if that’s not the problem. I hate taking it to shops but I might have to on this one. I’m going to try getting it scanned at Oreilly later on and see if it’s the same code before I take it to a shop

 

Well just in case anyone was reading... my battery terminals were extremely bad. My mechanic had me replace them just in case before taking it to his house and well no more codes and no more problems since then.. didn’t know bad battery terminals could throw codes though.

 

Late to this party, but yes, battery has an eerie effect on the truck.... I go through this every now and then when the battery discharges and all kinds of funky stuff start happening.... Almost like the ECU/PCM starts rationing power to certain components to try and keep the engine going until it just lets go and stalls out. I've sat on idle and pumping the gas pedal like its a 1970 all over again just to try and keep it on.... 25 minute at idle at the house or side of the road usually keeps it good for a few months before it comes back.. I've only had that code once though, make sure you push the clip all the way in as it sometimes resists to go in place.

 

Just had the same problem of stalling out throwing an MAF code. I have a 2011 with a TRD air intake that had one of the mounting bolts sheared off. This caused vibration in the airbox base, which in turn caused the hose to loosen up and pop off the intake pipe at random intervals. (found this out while on a road trip 400+ miles away from home)...Dealership replaced the bolt with a bigger one and I have not had an issue since - 800 miles since the fix...

Might want to check the airbox base...just sayin'

Hope this helps,

BWJ