ECM in a 2003 Toyota v8 tundra is causing various codes to come on. Prior to this I've had MAF sensor and 02 sensor poo31 replaced due to check engine light diagnostics. Then code po136 came on. I had sporadic stalling at low speeds or at a stop light during all of this. Do I need to replace the ECM? Throttle was cleaned too and wiring, hoses, connections were all inspected and ok.

SOURCE: how to check and replace, if needed, the cicuit fuse; new O2senso

To verify if it's a real problem now disconnect the positive battery lead wait about 30 seconds and reconnect. The light should not be on unless it's a real problem yet. If it stays off then go somewhere where you can floor it and go through the gears a couple times. This will establish a new accleration curve. If it comes on again then you will have to have it hooked up to a computer and see what the error code is.

james

• 125 Answers
• Posted on May 05, 2009

SOURCE: Check engine light code P0171 activated on my 2001 toyota corolla

p0171 is lean condition bank one. you could have a vacuum leak a bad map sensor bad maf sensor clogged fuel filter low fuel pressure. start with the vacuum leak first.

SOURCE: check engine light on my

Bank 2 will be the side that DOESN'T have the #1 Cylinder..Sensor 1 will be the one BEFORE the catalyitic convertor. On your car if it is a V6 then Bank 2 is the DRIVERS side, and if it's a V8 then Bank 2 is the PASSENGER side.

Layne Johnson

• 379 Answers
• Posted on Mar 02, 2012

SOURCE: My car still idles low to the point of stalling at stop lights after replacing the Mass Air Flow Sensor. The check engine light is still on. What should I do now?

bad fuel filter maybe or air filter or you need new spark plugs or wires or a new distributor