Well long story short I have a 09 Tacoma with a TRD blower + about every power increasing add ons and is on its second engine after first one exploded a piston and connecting rod while under boost + nitrous. Engine is OEM block (1GR-FE) but new forged internals, ARP studs, etc, and a MAP-Ecu3 computer since its seeing FI and spray and is one of my daily drivers. But that's not the current issue...
Truck has about 10K miles on new engine and all has been fine since break-in. Well yesterday I drove about a mile down the road to the local gas station. Filled up the truck (1/2 tank) and a 5 gallon container for lawn chores. After filling up I went to start the truck and it fired right up. But within 5 seconds it began stumbling and finally shut off. I attempted to restart it but it would barely start and would die. Had the truck towed home. It acted like my GTO did when the fuel pump died. So I assumed that was the case and left it sitting and used the 5 gallons of gas in container for yard work which assured me it was not bad gas (same pump/grade). So today I unhook the fuel line going to the URD 7th injector and placed it into a clear container and turn the key for a second or two. To my surprise gas was pumping out like it was supposed to. I thought maybe pump just wasn't working yesterday. Reattached line and truck would either not crank or crank, stumble, and die. Checked all fuses and all were good. Then I disconnected the MAF sensor wiring harness and truck now cranks and runs (a bit rich 12:1 according to WB). Replug in the MAF sensor harness and original problems reoccur.
My question is could a MAF sensor suddenly die and cause the truck to not be able to run for more than 1-2 seconds? Could it be dirty and cause that much problems? Or would it have to be completely dead? If dirty is a possibility I will buy some MAF sensor cleaning spray tomorrow. Could some other problem be the actual problem but disconnecting the MAF sensor temporarily corrects it or does my test confirm a bad MAF sensor?
Thanks...
Truck has about 10K miles on new engine and all has been fine since break-in. Well yesterday I drove about a mile down the road to the local gas station. Filled up the truck (1/2 tank) and a 5 gallon container for lawn chores. After filling up I went to start the truck and it fired right up. But within 5 seconds it began stumbling and finally shut off. I attempted to restart it but it would barely start and would die. Had the truck towed home. It acted like my GTO did when the fuel pump died. So I assumed that was the case and left it sitting and used the 5 gallons of gas in container for yard work which assured me it was not bad gas (same pump/grade). So today I unhook the fuel line going to the URD 7th injector and placed it into a clear container and turn the key for a second or two. To my surprise gas was pumping out like it was supposed to. I thought maybe pump just wasn't working yesterday. Reattached line and truck would either not crank or crank, stumble, and die. Checked all fuses and all were good. Then I disconnected the MAF sensor wiring harness and truck now cranks and runs (a bit rich 12:1 according to WB). Replug in the MAF sensor harness and original problems reoccur.
My question is could a MAF sensor suddenly die and cause the truck to not be able to run for more than 1-2 seconds? Could it be dirty and cause that much problems? Or would it have to be completely dead? If dirty is a possibility I will buy some MAF sensor cleaning spray tomorrow. Could some other problem be the actual problem but disconnecting the MAF sensor temporarily corrects it or does my test confirm a bad MAF sensor?
Thanks...