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3.0 ffv rich bank 2

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Old Mar 27, 2020
  #1  
Evilomen1027's Avatar
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From: winder
3.0 ffv rich bank 2

Hello all so I have searched high and low and still cant find a answer yet
I recently bought a 03 3.0 flex fuel and it's running rich as hell on just bank 2 idles rough and has no power what so ever I have stumped everyone I know with this truck

First off the original codes misfire cylinders 1,2,3, bank 1 lean bank 2 rich I could barely get the truck to hit 40mph at first now 25 if I'm lucky on a flat road

What have I done so far I check compression and cold its 140-160psi checked coil and I get spark to all 6 fuel pressure at the rail is 58 and as far as I can tell all the injectors are pulsing correctly so now for one weird part I cant find the ffv sensor it's not on the frame where its supposed to be and there are no signs it has been deleted the maf is new the pcm looks new but I cant seem to find out why its dumping fuel please help
 
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Old Mar 27, 2020
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RonD's Avatar
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From: Vancouver, BC
Welcome to the form

1999/2000 Ranger 3.0l Flex Fuel had the fuel sensors, your 2003 won't

Lean on one bank and rich on the other can be reversed upstream O2 sensors, had a shop do that to my truck when they change the clutch
Passenger side will have red/white wire
Drivers side yellow/blue wire
Plugs are exactly the same, so if there has been any work done.........................just a heads up

Test for a leaking fuel injector with the Clear Flooded Engine routine
Key on engine off
Press gas pedal down to the floor and HOLD it down all the way
Try to start engine
It should NOT start or fire at all, fuel injectors should be OFF

When you release gas pedal injectors will restart

If it fires or starts you may have a leaking injector

How long did the 58psi fuel pressure hold after key off?
Should stay above 35psi,..........forever, well for months and months, lol
 
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Old Mar 27, 2020
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From: winder
It did not hold long in about 2 minutes it was down to 20psi and stopped at about 5 the last time I tried starting at wot I had the coil unplugged so I will try that in the morning
 
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Old Mar 28, 2020
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From: winder
I just ran the test for leaky injectors and nothing these are the codes I'm getting right now
p0171 bank 1 lean
P0113 intake air temp sensor 1 circuit high
P1152 lack of h02s21 switch sensor indicates rich
P0175 bank 2 rich
Live data
calc. Load 37%
ect 185
Short term fuel 1 2.3-7.0
long term fuel 1 23.2-25.0
short term fuel 2 -3.9- + 4.7
long term fuel 2 -21.9 to -22.7
rpm 680-735
Spark advance is 18°
Iat 89.6
maf 0.01
Throttle 19.2%
02s11 v .080- .725
shrtft11 3.9-6.3
02s12 v .085-.820
shrtft12 99.2
02s21 v .030-.735
Shrtft21 -4.7 to +3.1
​​​​​​​
 
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