Engine lack of power?

Usually a sensor will set a code, so I'm a bit confused. When you place it in neutral you said it smoothed out. Is that correct? Also, I read back a couple posts. Please be careful increasing fuse amperage. You don't need a fire.

I have done a bunch of research and the only thing I can find related to 10 flashes is a p0137 which is related to an oxygen sensor. And I'm not confident the code is accurate.

By any chance, can you get your hands on a live data scanner?

Let me know.
Joe

Does the truck accellerate when this happens?

I have to be honest, that sounds like either a plugged converter, weak fuel pump, or something restricting air into the throttle body. Tell me, is there any smoke from the exhaust when this happens. Also, is there any noise coming from the exhaust when it happens.

Joe

I hae to say it, but if the rpm's are increasing and the truck isn't gaining speed, it sounds like the trans is slipping. Has it ever done this without the cruise control engaged?

The converter internally can reach temps of over 1200°F. When checking it with a infrared gauge, you should see differences under 100°F between the inlet and outlet. The outlet being hotter. (Note the engine should be at operating temp) If you see temps exceeding approximately 200°F, that is usually a good indicator the engine is running rich (too much fuel). If the difference is over 500°F, it usually indicates there is unburned fuel making its way to the converter.

Now, if you suspect there could be an issue with the converter being plugged, you can check back pressure by attaching a pressure gauge to the exhaust system. Most times, I remove an O2 sensor (Pre catalytic converter) and connect there. At an idle, back pressure should be no higher than approximately 4 psi. If you find it to exceed 7 or 8 psi, something is blocked.

Also, you can remove an o2 sensor and see if it runs better. That will allow added release of pressure. It won't release enough to make things perfect, but you should notice a difference. However, it will turn the check engine light on indicating an O2 sensor problem.

Let me know if you do either of these tests and the results.

Take care and try to have a good weekend.
Joe

Wow! This is an interesting one. Again, if the RPM's increase with no speed or accelleration from the engine, I feel the trans is slipping. The shift solenoids only shift the vehicle from one gear to another.

One would think so; however, if the RPM's increase, there should be an accelleration.

The temp of the converter itself is odd. Do me a favor, remove the oxygen sensor and see if it makes a difference.

As far as the temps, the converter itself should have been hotter. Also, yours is hotter before the cat. That shouldn't be. Try removing the )2 sensor and see if it makes a difference.

Joe