940 no start - no fuel pressure - new fuel pump

steveline60 · Oct 28th, 2008, 11:52

Engine cut out while driving, then refused to start.

Pro garage checked car, verified spark, diagnosed as bad fuel pump (this car has just one in-tank pump)

I've just replaced the fuel pump, can hear it cycling, tested pump at pump, does pump fuel.

Replaced fuel filter.

Used pressure gauge at rail, 0 pressure. Checked pressure under car before filter, 0 pressure.

Am now stumped. Helppppp!!!

Mister T · Oct 28th, 2008, 12:41

Steve,
What year model is your 940 , the only thing I can think of is there maybe a crimped feed pipe,?.
Mister T.

Steve940estate · Oct 28th, 2008, 14:14

I've just been playing with the fuel pump on my car. They are pretty hard to get into the tank correctly I don't suppose it is positioned wrong ?
Other than that I would say that whatever the original fault was is still there. Have you tried the original pump to see what that does out of the car ?
As Mister T suggests it must be something to do with the fuel pump, either blocked or crimped. There are rubber bits on each end of the metal fuel pipe. This runs quite close to the rear subframe so it's possible it's been squashed. There is a bit of flexable pipe in the tank, it's possible that it could have split where it joins the pump and outlet fittings.

CTCNetwork · Oct 28th, 2008, 20:06

Hi,

Might also be worth checking the relay as well. JIC

Des. . .

Oct 28th, 2008, 11:52	#1
steveline60 New Member Last Online: Oct 28th, 2008 11:52 Join Date: Oct 2008 Location: Ypsilanti	940 no start - no fuel pressure - new fuel pump Engine cut out while driving, then refused to start. Pro garage checked car, verified spark, diagnosed as bad fuel pump (this car has just one in-tank pump) I've just replaced the fuel pump, can hear it cycling, tested pump at pump, does pump fuel. Replaced fuel filter. Used pressure gauge at rail, 0 pressure. Checked pressure under car before filter, 0 pressure. Am now stumped. Helppppp!!!

Oct 28th, 2008, 20:06	#4
CTCNetwork Forum Support Team Join Date: Dec 2004 Location: Liège, Belgium View Photos By: CTCNetwork	Hi, Might also be worth checking the relay as well. JIC Des. . . __________________ Density:- Not just a measurement ~ It's a whole way of Life.! ! ! I drive a Volvo, Please Don't Get In My Way! OldVolvos4Ever He shows up. People die. He vanishes. People should not be afraid of their governments. "He'll deliver more justice in a weekend than 10 years of your Governments should be afraid of their people... "V" courts & tribunals. Just stay out of his way." "I plan to."

Oct 28th, 2008, 12:41	#2
Mister T Senior Member Last Online: Sep 12th, 2019 23:23 Join Date: Sep 2007 Location: San Diego	Steve, What year model is your 940 , the only thing I can think of is there maybe a crimped feed pipe,?. Mister T.

Oct 28th, 2008, 14:14	#3
Steve940estate Steam Driven PC Owner. Last Online: Mar 4th, 2024 23:50 Join Date: Dec 2004 Location: Not sure.	I've just been playing with the fuel pump on my car. They are pretty hard to get into the tank correctly I don't suppose it is positioned wrong ? Other than that I would say that whatever the original fault was is still there. Have you tried the original pump to see what that does out of the car ? As Mister T suggests it must be something to do with the fuel pump, either blocked or crimped. There are rubber bits on each end of the metal fuel pipe. This runs quite close to the rear subframe so it's possible it's been squashed. There is a bit of flexable pipe in the tank, it's possible that it could have split where it joins the pump and outlet fittings.

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