I think I do because my truck runs cooler than it should plus i have the cooler autolite plugs. Never had stat out. My truck is constantly running at 75-80 degrees Celcius (167- 176 Fahrenheit). You might be on to something though.. That would cause the truck to run overly rich..

I was thinking about it earlier and the p0132 code has been coming up ever since the speed sensor started failing. Actually same day. I replaced speed sensor in spring. Sometimes if I am driving, the park light will turn off and speedometer will work perfectly for let's say 20 miles, then quit again. Could these two things be linked? Do they possibly run in the same circuit and have a linked ground wire? Just a thought.

 

Park light? Are you referring to the gear indicator in the cluster?

The two circuits shouldn't be related....... as I don't think they have anything in common. Four wires on the O2, two for the heater, one 5 volt reference signal, and then the signal return wire. (latter two come/go directly to PCM.)

 

Oops sorry I meant park brake indicator light.

 

ABS lite come on as well?

If the speedo quits working, the usually indicates failing rear wheel speed sensor. (and also turns on the Brake/ABS lites, and makes the trans shift funny.)

 

Nope no abs light. I replaced rear diff sensor in the spring because speedo/odometer didn't work and both abs and park brake indicator stayed on. But what I find odd is how randomly the park brake indicator light will turn off and speedo/odometer will work perfectly until randomly it stops working or I hit a good sized bump. Checked all connections to the rear diff and all is well.

 

Maybe the connection at the back of the cluster?

Have a look at the parking brake switch on that pedal assembly as well.

 

ok the speedo is on the t case check that. i have a solo p0132 code nothing else with it. no slugish running no ships no misfire no odd running what so ever. i do run rich because most of the time the truck is not up to temp before shutdown is it possable that is my issue?? i have checked grounds i have 12 volts and a 5 volt referance. also have 1.2 Ohms to the pcm. all things accounted for. my speedo works fine tho i had to rewire it do to previous owners handy work and stupidity. please let me know what you find out so i can possable resolve my issue. ill be doing more tests tomorrow so ill see that i find as well.

 

Have you replaced oxygen sensor? If not, you should. It is an 02 code after all.