vikingdiesel

Car ran and drove great, just had the dealer replace the drivers side fuel pump sending unit last week. Well I go to accelerate and the car bogs down and no power, I was able to pull off in the parking lot and the car stalls. I go to restart it and it just cranks. I checked the fuel pump relay and fuel pump fuse and all are good. I waited a while and even disconnected the battery thinking its some glitch and still nothing. Just cranks and cranks. No check engine lights. I'm thinking that the fuel pump sending unit the dealer installed went bad, any ideas?

Elhonaz

Crankshaft position sensor..? pretty common and doesnt give CEL. When it cools down it usually starts but when warm just cranks

cptncreme

or the fuel supply hose from the other pump popped off

novae500

kinda odd after getting the fuel unit serviced and you are having fuel /starting problems. maybe something was not tightened snug and came loose? Def get it back to the shop.

vikingdiesel

It's probably not the crankshaft position sensor then, because the shop couldn't start it this morning after sitting for 7 hours.

novae500

when i car decided to cut off while taking an entrance ramp, i thought it was the cps or s/c pulley. Towed to the shop and found no fuel pressure at all from the fuel rail. CPS was changed and still no fp, ended up being the ps fuel unit connector coming loose and had a bent pin.

Speedriven1

Could be that one of the lines on the pumps was not put on correctly.

baldmike73

did you replace both pumps?

shop recommended i do on the one failing and literally a week after replacing i had the exact same thing happen you just explained and it ended up being the passenger side pump - we have 2 in the 55's

vikingdiesel

Wow, can't believe you just said that, the dealer called me and literally just said the same exact thing, that's it's the passenger side fuel pump. Not sure if I believe it, if these cars have two fuel pumps, it should still run on one pump, no....?

Hulk

It's not 2 pumps exactly, there's a pump and a sender, it's a weird setup

vikingdiesel

So there story could be legit?

Hulk

There's not a straight answer since there's many that are living with the leaking fuel and still driving around and then there's some like novae500 that the car just stops, I think it has to do with fuel pressure and voltage but what I have noticed is that they usually go out together or at approx. the same time