1997 Tacoma code po125

runs good some times it acts like it is flooding for just min then straights up but sometime it will crack for ever before it starts I have flushed radiator block new coolant new thermostat new temperature control sensor it doesn’t have intake air Temperature control unless it is built in mass air sensor some have told me could be or could be os sensor in front of cat convert any help plz I don’t know where to go

 

couple of possibilities here, I am assuming that there are other codes other than the P0125, correct?
There are 2 temp sensors one has 2 wires, this is for the fuel injection and one has one wire, this is for the coolant gauge. There is a specific resistance across the 2 wire sensor at operating temp the resistance across the 2 pins... I think 200 to 400 ohms. I will have to look that up to be sure. If that is OK then it sounds like there is an open in the Brown black wire.

The Mass air sensor, the coolant temp sensor and a few other sensors share the same Brown and black wire via a splice behind the glove box.

not being right there it is going to be very difficult to walk you through what I would do if I was there.

the attachment if for a 2000 Tacoma with a 3.4 THIS IS FOR REFERENCE ONLY do not use it as the pins on the ECU will probably be in different locations. It should be good enough for you to use to check for opens/shorts between the components. I would disconnect the battery and unplug the ECM before I would start to make any wiring checks.

 

No just the one code I charge the temp sensor on the back of motor was told that was the one it was the only other one I can find is the one that goes to gauge right a at top radiator hose I can not find one for fuel injection was it is it air box but there is not one there they said if not one in there it was built in the mass air sensor

 

if she is a 3.4 that sensor was for the gauge, the 2 wire one should be on the top of the motor. If she is the 4 cylinder I will have to look for where that one is.

 

It is 1997 model if you can the me place to look for other sensor thanks but that is all of the ones I can find

 

Well I guess I should have told that 4 2.7 motor

 

I am going to put o2 sensor on it tomorrow when they get it have been told by some they is the place to after tem I. Don’t know so any input would be greatly appreciated

 

I would locate and replace the engine coolant temp sensor, the 2 wire one first. The ECU is looking for a specific resistance apx 20 minutes after startup to determine if the sensor is bad. This is a 2 trip error meaning that it will take 2 times of starting and running the engine for over 20 minutes for this code to set the CEL(check engine light).
If you throw parts at it in desperation you will just be wasting money and time.

Do you have access to an OBDII scanner? if so, does it have live data capability?

 

Not sure about scanner got man at work use the shops will see

 

Well I my be parting out truck boy try to start it before mas sensor was in it started before could stop him it smoked then died put it in now it will not start sounds like it is lock-in up or something thinking it is now junk going to have other man come pull codes and see I will say it has a bunch of them hoping he can clean out and it starts I have no luck

 

A new 0xygen sensor fixed that code on my 98 Tacoma. Sorry to hear you're having trouble. With my truck, there wasn't an issue with the way it ran, only a check engine light and decreased fuel mileage.

 

I just don’t understand it was running fine just had problem starting sometime put new mass and o2 today now it sounds bad and will not try to start sounds like may be bad out of time or something I don’t know going to pull codes Wednesday evening maybe he can find problem if not I guess I will junk it I had fun in the woods but it is looking like that’s over

 

Any updates?

 

Pulled number I spark out antifreeze blowed out when turned motor over I don’t understand why that happened unless head gasket blowed I haven’t noticed any smoke from it before the old antifreeze that came out of it before this was brown looking I flushed it and put new ran good for few days then this was happened if the head is bad I guess it will be junked hope it is just gasket will have it off maybe tomorrow evening

 

Got head off and found this the one that had antifreeze in it