Yeah MAP at the front of the intake manifold inbetween the alternator and A/C compressor. 15 dollar part if you want to try that first.

 

welp figured out what the problem was over the weekend. Went ahead and bought a fuel pump anyways cause I was leaning more towards that being the problem then the cats and I was right. Put a new fuel pump in it and it diff has all the power back again no matter if its cold or not.

 

Im curious since the filter and pump are one assembley did it come with a filter?
Did you do it yourself? If so how was it?? Price on pump??

 

Yes the new pump came with a new filter. It really wasnt that bad at all I would recomoneed someone there to help you does make things go a lil smoother. But it helped alot that I'm a diesel mech to so I have alot more tools then some just do it your selfers. Worst part was the clips that hold the fuel line on which if I was you I would go ahead and buy those when you buy the fuel pump need one for the actual pump and one for the vacumm line going to filer hole. Cause I couldlnt find those at any local parts store and the dealer told me that it would take about 2 days to get them. The fuel pump its self I bought at the dealer as well I got it for $242 after tax and I diff suggest buying the fuel pump at a dealer might pay a lil more then at say auto zone but it will last alot longer

 

I still wouldn't run the risk of running no Cats on any of my vehicles.

http://www.epa.gov/oms/cert/factshts/catcvrts.pdf

Up to $25,000 fine and its a Federal Offense, don't think I'd take em off just for a small 1-4 hp and 1-6 ft-lb gain...

If you aren't tuned I am betting you are running very rich and losing power that way too.

 

Izero you cant stand the fact that you werent right about this one can you. Kept pushing towards it being the fact that I didnt have cats and that being the reason why I was having the problems I was having. Luckly I didnt take your advice on that part and spend $500 having new cats put in for it not to fix the problem. I do thank you for you input and attempting to help me though. And I'm not to worried about the no cat thing I live in oklahoma we dont do inspections here

 

Oh no I don't mind being wrong at all, and I'm glad you got it fixed.

How many miles are on the truck anyways? Not too common for fuel pumps to fail, unless the filters are damaged/clogged or they get overworked.

I've been working in the automotive manufacturing world as an engineer for awhile so I'm always curious as to what causes failures.

 

Im with Izero with the Cats off and no tune its a loss in power no matter what people say. You are dealing with a computer it knows things we dont.

And Rockauto is a reliable place to get OEM parts at half the price, just priced one at 130.

I am glad you got it fixed nothing worse than chasing problems with your money

 

I've seen a lot of fuel pumps become balky - mostly every time it's happened after someone ran out of gas and forced the fuel pump to run dry. For some reason, Dodge fuel pumps can't take this.

Just out of curiosity, ever run out of gas???

 

True.

The reason they don't like to run dry is for two reasons.

Gasoline is petroleum based, and petroleum is by nature a lubricant. Most modern electric fuel pumps are designed to use the gas as a lubricant.

The second reason is because the fuel in the tank actually helps cool the fuel pump during operation, so when it becomes exposed to air in the tank without fuel it can become hot.

So combination of heat and lack of lubrication can cause premature fuel pump failure.