Rookie

My wife called me this morning and said our truck was stalling at stop lights,

She said the first time it made a loud whooshing sound that wound down, and stalled, it started right up but stuttered like it was trying to stall at other lights, but she kept the revs up and it kept going.

We believe we may have a bad O2 sensor and was planning to get that fixed while we were away on vacation next month. The codes I have are:

P0125
P1135
P1130

Read this thread on not being able to propery distinguish wahat exactly these codes are as different sources give different answers.
https://www.yotatech.com/forums/f2/help-cels-76540/

Rook

Rookie

Wanted to add that Stealership did a 50,000 mile tune up, the truck currently has 60,100 miles on it. Air filter, fuel filter changed at 50K, oil change & filter at 59k

Read another thread where a guy had a stalling problem and Pretacopower replied:
"That's what went wrong with mine. CEL came on and I kept putting it off since nothing seemed wrong, then it started stalling after I came to a stop. Replaced the TPS sensor and all was good."

I hope it's that easy - Stealership replaced the TPS under warranty at 30k already.

Rook

MTL_4runner

You might verify those codes with the dealer and have them look them up in the FSM. I would be curious to know the answer on those from the FSM as well. Also if you can get a FSM for that vehicle, it should give you specific trouble shooting procedures for each code.

Rookie

Dealer fixed my car for $420, turned out to be the A/F Ratio sensor.

The code:
P0125 Closed Loop Fuel Control Insufficient
is correct
The following in the FSM are correct:
P1135 A/F Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
P1130 A/F Sensor Circuit Range/Performance (Bank 1 Sensor 1)

Not what is listed here:
https://www.yotatech.com/~corey/tech/dr_z_obd/dr_z.htm
He has these which are Incorrect (according to the FSM:
P1130 Lack Of HO2S Switch - Adaptive Fuel At Limit
P1135 Pedal Position Sensor A Circuit Intermittent

Rook