when i take my foot off the gas pedal when driving my rpm's actually go up and then down and i dont know why and it just sounds like sometimes my truck wants to shut off i dont know if its the fuel pressure regulator he fuel pump and filter or fuel injectors what do yall think

 

Take the TB off and clean it , and the IAC that's on the back, and get a Haynes manual and check the TPS.

 

I cleaned that already any other ideas

 

You cleaned what? the TB? did you remove the sensors? Do you have a Hanyes to check the TPS voltage ? Kind of a vague answer.

 

i got some stuff from autozone that u spray in the throttle body while the truck is on to clean it is that what you mean or what?

 

That is not cleaning the TB, remove it from the intake ,and all the sensors from it. Then clean it. Then clean the IAC. Reinstall everything and like I said check the TPS voltage using a meter and a Haynes manual to guide you with that procedure.


And while you have the TB off, look down the intake with a flashlite and small mirror and see if you have any oil pooling in there.

 

Spraying cleaner into the intake while the engine runs doesn't do a particularly good job of cleaning the TB. The parts that get really gunked up won't even get touched by the cleaner. To do it right you really have to remove it from the manifold and clean it thoroughly, including the IAC inlet where carbon/oil residue accumulates.

 

ok thank you also one more quick thing how do i check the voltage and what should i clean it with?

 

Use carb cleaner for cleaning and use a voltmeter to check the voltage along with the manual. Trust me , it will help you a lot. And I don't mean for just testing the TPS.

 

how often do u recommend that i do this and also how long does it normally take to do this job i have every tool in my bosses shop and work on trucks alot but never done this one job your telling me but about how long u think it would take