Mazda Atenza fuel pump issues
#1
02-15-2017, 01:23 AM
Mazda Atenza fuel pump issues
Hi all
I have a 2007 2.3 mazda atenza wagon. 2 weeks ago, fuel pump died ( so we thought ) so after a week and a half of sourcing parts and a lil bit of drama, got it going and we thought all was well. Syphtoms of a dead pump happened again today only 4 days after getting it going from the first time.
Have given to the mechanics this time and the hooked it up to a diagnostic machine today and found no faults.
My wide mentioned yesterday that the fuel gauge was floating up and down . Unfortunately with the car at the garge I can't check plugs and relays to diagnose. Has anyone had similar problems?
Cheers Paul
I have a 2007 2.3 mazda atenza wagon. 2 weeks ago, fuel pump died ( so we thought ) so after a week and a half of sourcing parts and a lil bit of drama, got it going and we thought all was well. Syphtoms of a dead pump happened again today only 4 days after getting it going from the first time.
Have given to the mechanics this time and the hooked it up to a diagnostic machine today and found no faults.
My wide mentioned yesterday that the fuel gauge was floating up and down . Unfortunately with the car at the garge I can't check plugs and relays to diagnose. Has anyone had similar problems?
Cheers Paul
#2
02-15-2017, 03:01 AM
What brand pump did you use?
Are you sure its got plenty of fuel in the tank? ( Regardless of what the gauge says)
Check you've got full battery voltage at the pump & double check the resistance of the earth.
Are you sure its got plenty of fuel in the tank? ( Regardless of what the gauge says)
Check you've got full battery voltage at the pump & double check the resistance of the earth.
#3
02-15-2017, 03:43 AM
Fuel pump is "gross" brand. was the cheapest available at $150.
And plenty of fuel in the tank.
I also thourght I should bench test the old pump which may give a few more clues. During the first failure, I put a multi meter on the plug pump and it was getting good volts and disconnected the hose to the fuel rail so naturally I assumed it was the pump.
And plenty of fuel in the tank.
I also thourght I should bench test the old pump which may give a few more clues. During the first failure, I put a multi meter on the plug pump and it was getting good volts and disconnected the hose to the fuel rail so naturally I assumed it was the pump.
#4
02-15-2017, 05:41 AM
Has anybody checked & measured fuel pressure at the fuel rail?
Can I suggest wiring a small light( or test light ) into the wiring at the pump. To make sure its got power to prime & make sure it's not loosing power on & after cranking.
Can I suggest wiring a small light( or test light ) into the wiring at the pump. To make sure its got power to prime & make sure it's not loosing power on & after cranking.
#5
02-15-2017, 01:07 PM
hi grim_reaper
There is no fuel what so ever at the rail to measure pressure. Took the line off the rail and cranked and nothing came out.
I really wanted to check the wiring to the plug etc as before i took to the mechanics but I removed the back seat and took the cover off and could not feel or hear the pump priming as I could before.
i don't believe a a pump could fail in 3-4 days or less than 100km, even a chinese made pump. So it must be electrical? The mechanics mentioned they have experienced ecu's failing causing pump failure symptoms? anyone else heard of this?
There is no fuel what so ever at the rail to measure pressure. Took the line off the rail and cranked and nothing came out.
I really wanted to check the wiring to the plug etc as before i took to the mechanics but I removed the back seat and took the cover off and could not feel or hear the pump priming as I could before.
i don't believe a a pump could fail in 3-4 days or less than 100km, even a chinese made pump. So it must be electrical? The mechanics mentioned they have experienced ecu's failing causing pump failure symptoms? anyone else heard of this?
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