Truck running rough still after many new parts

Air to Fuel ratio

 

The sensor going to exhaust? Sorry

 

No, it's just a general terminology. In this case it's aimed towards anything that could mess up the AFR so yes the sensor could also be a candidate for the problem

 

Ok so bad o2 sensor could be throwing that darn p0100 code

 

Not likely since you don't have a 02 code to go with it

 

Id start with seeing if adequate fuel is getting to the block, as you already know from there back to the fuel tank is good

 

Ok so like fuel pressure test

 

Yeah, and an injector test would be good too

 

Could a clogged up cat cause this?

 

Possibly, but again another code would go with it usually

 

Ok good point, thx

 

You can rent a fuel injector tester or see if a buddy has one. They're really easy to use on our trucks

 

Did you clear the codes? you might be chasing a ghost code...

 

Well code or not, it still runs like shit for some reason

 

When you give it throttle and it bogs, does it have load on it?

 

No but it does the same thing under load. Just took off cat no change. Trucks been sitting for 3 months gonna clean injectors and try again

 

I seriously think you need to look at the ignition system. If it's bogging without any load on it, that tells me it isn't a fuel issue.

 

Ok thx. I'll get that pressure tester from auto Zone

 

Not necessarily, it could be getting enough fuel to idle, but past idle it can't provide enough fuel. I wouldn't rule it out, but yes also check the ignition components.

 

My reasoning is that it takes very little fuel to spin an engine with no load and wouldn't be putting any real strain on the fuel system. If it was really the fuel system causing it to bog without load, then I suspect would be totally undrivable.


On the other hand, if the injectors arent firing or are firing at the wrong time, that could also be a problem, but seems less likely than an ignition issue.