P0138
About a week ago I noticed that my 96 1500 with 5.2 kinda stumbled as I took off on a hill. Didn't think much of it because it ran fine afterwards. Then I noticed it was blowing black smoke out of the tailpipe. It wasn't just a little smoke either. So I do some digging and come to the conclusion it's either the coolant temp sensor or o2 sensor. It's not the coolant temp sensor, so I check codes. Come up with p0138 bank 1 sensor 2 high voltage. Would the rear o2 sensor cause it to smoke like that? Always thought it was just for catalytic converter efficiency.
|
Just swap them both with new NTK jobbers and call it good!
|
There was a recall on the cats in 96, They break up inside. If it wasn't replaced get a magnaflow cat with NTK 02's then you will be good. It's what's in mine and no issues.
|
So the rear o2 can cause it to smoke?
|
Not really. The rear O2 is basically just to monitor the cat. It has some small effect on mixture, but, not much.
|
Originally Posted by HeyYou
(Post 3369221)
Not really. The rear O2 is basically just to monitor the cat. It has some small effect on mixture, but, not much.
|
How much should o2 voltage swing? The front goes from .05v up to 1v. It does the sweep in about a second I would say. Rear stays at 1v.
|
Generally from 0 (.05 is close enough....) to 1 volt. .5 is a perfect mixture.
I think you have issues with the rear O2..... Would be interesting to check the signal return voltage, and see what it really is. |
It has an exhaust leak right after the cat and has had for a while. If I delete the cat what do I need to do for the rear o2?
|
O2 fouler? Fooler? Something like that. It's a bung extension that moves the sensor further out the pipe so it still reads a different mixture. Enough anyway.
|
Ok. Was hoping not to buy a new sensor if that's not my main problem.
|
Main fuse
Is there a main fuse or fuseable link on a 96 Ram 1500? I was driving home last night and lost all power. Engine died. Lights died. Everything. I haven't had a chance to look at it. Just looking for advice before I start.
|
In the PDC under the hood, right behind the battery. I think it's like a 140 amp fuse.
|
The one in the distribution center is for the alternator(120+).
|
Well the truck started right up. Now I can't trust it to get me home.
|
Did you change anything? Touch anything? Or did you walk out, try and start it, and it fired right up?
|
I unhooked the battery when I got out because I figured there was a short somewhere and didn't want a fire. Hooked it up and started it.
|
That's just bizarre. Wonder if that battery clamp is having issues?
|
The negative clamp has a crack. It needs changed. But I wouldn't think that would cause the issue. I started the truck and unhooked each cable with no change.
|
Sure could......
|
I don't see how the clamp would make it die because of a crack if I took it completely free from the battery and it ran fine.
|
But it may be a contributor to the 'lost all power' scenario.
|
All times are GMT -4. The time now is 02:13 PM. |
© 2024 MH Sub I, LLC dba Internet Brands