1G losing fuel pressure while idling

[turbo4banger4g63]

my talon will be idling, or very light driving not out of second gear 20 mph, and it will just slowly start losing fuel pressure, it will get all the way down to 10-20 psi and die. but then will start right back up to around 42 psi. did some searching on here but not search after search. seems like everyone elses issue are slightly different. anyone have any insight on this???

 

[curt-s]

chdck voltage to the pump when its doing this.

 

[turbo4banger4g63]

yes i'm going to. does the ecu control the fuel pump voltage do you know??

pump is not losing voltage when fuel pressure drops, I am thinking its my FPR, possibly the pump

 

[ThunderChild]

Could be the pump impeller going bad, clogged filter, or a bad regulator diaphragm. Have you double checked the filter?

 

[curt-s]

yes im going to. does the ecu control the fuel pump voltage do you know??

It does not, no.

@ThunderChild has the next steps: pull the pump and inspect it and then what I'd be doing myself is disassembling the FPR. Done it already a couple times.

 

[turbo4banger4g63]

tried a different diaphram. no change, im gonna pull the pump cause the pump is over 20 years old. I will check the filter also but it is newer