Sudden loss of power

[Hartman]

It seems like my truck has lost some power over the last month. It's like I have to push down on the pedal harder to get it to go, and it still bogs down more than usual. Also, it idles a little rougher than normal.

I just changed the oil, the trans fluid was changed 3k miles ago. My spark plugs are due and I've ordered the plugs and wires but this doesn't seem like a problem that would have to do with spark plugs. I've come to the conclusion that it has to be something clogged up or something is sticking. I have suspicion that my drivers rear caliper might be sticking, but I'm still not convinced that this would make the pedal harder to push.

I know this could almost be anything. Do you guys think it's the TPS maybe? If someone else has had this problem please shed some light on this.

 

[aldive]

It wouldn't hurt to run some injector cleaner through the gas.....

 

[Ross-N-Chicago]

Hartman,

I too had the same symptoms with bogging down. Turned out I had two fouled injectors. I replaced them all just in case since it didn't cost that much more in parts/labor.

Have a good shop check it out before R & R-ing lots of parts.

Good luck...

 

[Nate1]

If your pedal feels sticky, I would definatly clean the TB....

 

[Hartman]

No it's not sticky at all.

 

[Alec]

Stupid question: you sure it's not just the hot weather?

 

[Hartman]

I don't think so, I've never noticed it before.

 

[JTX]

Could it be bad gas?

 

[Chew_12]

Yea I was thinking hot weather, here in AZ my X runs like crap during the summer when its 110.

 

[JTX]

Same here. My intake is worthless when its hot. But at night with cool air you can really tell.

 

[Hartman]

I guess that could be but it hasn't been real hot here, only the mid 80s. It also seems to be action weird around 45-50 MPH. When I'm accelerating, I hit 45 MPH at 2500 RPM it'll sort of like jam into a gear and go up to 3200 and then go back down to a normal RPM. That doesn't happen all the time, just occasionally. Is that normal?

 

[Hartman]

Well today the truck was running great. It seemed like the engine wasn't bogging at all and I could feel the torque on accel. I put some fuel injector cleaner in on Monday, maybe that cleared up my problems?

Seems to easy...

 

[X~FACTOR]

Yeah Hartman, it seems too easy. I posted one thread before saying I gain over 2 or 3 mpg by just using this. I know this for sure because I keep a log of my MPG religiously and I did not do any other changes before the increase.

I used this one, myself.

 

[Hartman]

I've always used the STP kind. I'm sure they're all similar.