I’m somewhat hesitant to ask for more help considering I overlooked the easy solution to my last running problem, but I’ve got another problem that’s got me stumped.
My truck was noticably sluggish when it shifted into overdrive or would refuse to shift into it all together, so I decided to change the filter and fluid in it. After this maintenance task was done, and I test drove it, I noticed the problem was still there. It also seems now that it has trouble shifting in all gears. When I tried to “manually” shift it through all gears, the transmission would hold it in the previous gear, buck, shake and then shift at a higher RPM. Not only this, but if I floor the pedal, the truck doesn’t want to drop to a lower gear to increase RPM. It only bucks and carries on until I let out of the gas.
I also noticed that when I rev the engine in park, the engine does not want to go past 4,000 RPM, and I hear a “grinding” noise at about that range. In the past, I could red-line the engine in park/idle no problem. Does the auto trans have the ability to “hold back” the engine or do I have deeper engine problems?
Thanks again for all past and future advice.