Tacoma shuts off while driving. Please help.

I dont know anymore. Could it have something to do with fuel/air ratio?

 

Yes I think it could be a MAF issue.

 

If the maf is bad or dirty it will lack power and the engine will sound throaty . Do you have any maf sensor cleaner handy? Or even brake cleaner but go very lightly on the filament maybe a couple squirts

 

I don't know if you've experienced a spark type of misfire.. it feels like the engine is cutting out rapidly like a hiccup. That wo uld make me think of a crank sensor issue or spark issue like coils plugs etc. If it has a throaty sound as it's struggling or stalling that can be more of a fuel delivery issue so yea fuel pump fuel filter etc but also don't forget the maf sensor kind of a fuel pump. It recognizes air flow and matches the correct amount of fuel or attempts to.. if it s dirty or bad it will under fuel the engine and it will have that throaty sound . You could drive around with a fuel pressure gauge duct taped to the windshield and see if the fuel pressure drops rifj r before it stalls LOL..

 

Ive cleaned the MAF and TB. Didnt make a difference. My buddy let me barrow his ultra gauge scanner hoping it would throw a code when it stalled. But i got nothing. Im pretty sure i can check pressure and rpm and stuff with it.

 

You'll need a pressure gauge to check fuel pressure, probably tap into a fuel line at the engine I think driver's side?

 

How long has it been since it did the no crank thing? That's still a concern because if it does a no crank (still) after a stall then we're still back on alarm and electrical connection
stuff

But if it consistently cranks (but no start) after stalling then we can move passed loose battery cables and the like and look into fuel delivery spark etc

 

Yea and leave the scanner connected and have it on the rpm pid when attempt a re-start

 

This. You disconnected the negative cable, right? Drive it some and see if things improve.

 

It's tough but you're trying to catch the problem in the act.. like the fuel pressure gauge windshield, the rpm pid on the scanner , etc

 

rpm at idle. What should i look for?

 

Also i hear loud ticking.

 

If the rpm is zero that's a bad crank sensor.. The maf is good at around 3 grams at idle. It should go up as you accelerate..

The real info will come when it stalls , watch closely when it does..

 

Don't worry about the timing or the evap pid..

 

Check the oil!

 

Ok so i gave it a little gas and as the rpms went down it stalled.

 

So crank it again.. if it doesn't start tight away keep cranking make sure the rpm is reading something at least 200 to 300..

 

Cranked right up rpm at 7ish

 

Did it start within a normal crank time or just crank and crank?

 

Im guessing it stalls as the rpms drop.