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EFI motor keeps cutting out - 304 efficient in HZ
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wannabe51 Offline
#1 Posted : Wednesday, 8 February 2017 12:23:17 PM(UTC)
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hello all,
I have a HZ ute with v8 efi (vp comm)
Runs perfect for 15-20mins then stalls, but will restart only to stall again after another couple of minutes driving .
Have had auto elec replace fuel pump, relays, fit new filters , fit in line fuel pressure gauge,
When motor stalls, fuel pressure gauge drops to zero psi.

Any advice will be helpful.

Cheers Dave
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HK1837 Offline
#2 Posted : Wednesday, 8 February 2017 12:33:23 PM(UTC)
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MAP sensor.
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HK1837 Offline
#3 Posted : Wednesday, 8 February 2017 12:33:45 PM(UTC)
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MAP sensor.
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If we all had the same (good) taste, who would buy all the Fords?
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wannabe51 Offline
#4 Posted : Wednesday, 8 February 2017 6:24:45 PM(UTC)
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Thank you, I have trusted professionals to fix the vehicle, and so far no success.
I can only ask if they have checked the map sensor operation.
Cheers
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HK1837 Offline
#5 Posted : Wednesday, 8 February 2017 6:55:10 PM(UTC)
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My mate's had a crook MAP sensor and used to cut out. It was VP in WB.
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commodorenut Offline
#6 Posted : Wednesday, 8 February 2017 9:39:24 PM(UTC)
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Fuel pressure will drop because power to the pump is cut when it stalls.

I'd be looking at the ignition module (simple test is pour cold water on it, and if it restarts fine then it confirms it.
Otherwise I'd look at the crank sensor in the dizzy.

Been a common theme on all EFI 5L I've owned at around 180,000km.
Cheers,

Mick
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